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2020

Doerr, T.; Braun, S.; Schuster, S.; Brillert, D.: Proof of Concept for a Novel Interstage Injection Design in Axial Compressors, ASME: Turbomachinery Technical Conference & Exposition, September 21 – 25, 2020.

Föllner, S.; Amedick, V.; Bonhoff, B.; Brillert, D.; Benra, F.-K.: Model Validation of an Euler-Based 2D-Throughflow Approach for Multistage Axial Turbine Analysis, ASME: Turbomachinery Technical Conference & Exposition, September 21 – 25, 2020.

Hussein, I. A. E.; Hacks, A. J.; Schuster, S.; Brillert, D.: A Design Tool for Supercritical CO2 Radial Compressors Based on the Two-Zone Model, ASME: Turbomachinery Technical Conference & Exposition, September 21 – 25, 2020.

Lapp, F. F.; Hecker, S.; Schuster, S.; Brillert, D.: The Multi-Phase Flow Test Facility “EMMA” to Investigate Local Heat Transfer Coefficients and Liquid Water Films at Wet Steam Conditions, ASME: Turbomachinery Technical Conference & Exposition, September 21 – 25, 2020.

Luo, J.; Brillert, D.: Experimental Investigations on the Pressure Fluctuations in the Sealing Gap of Dry Gas Seals with Embedded Pressure Sensors, ASME: Turbomachinery Technical Conference & Exposition, September 21 – 25, 2020.

Schröder, T. R.; Schuster, S.; Brillert, D.: Prediction in Rotor-Stator Cavities at High Reynolds Numbers up to RE ~ 2×108 Towards a New Parametric Model, ASME: Turbomachinery Technical Conference & Exposition, September 21 – 25, 2020.

Schuster, S.; Dohmen, H. J.; Brillert, D.: Challenges of Compressing Hydrogen for Pipeline Transportation with Centrifugal-Compressors, Proceedings of Global Power and Propulsion Society (GPPS 2020), September 7-9, 2020, Chania, DOI: 10.33737/gpps20-tc-45.

Hacks, A.; Schuster, S.; Brillert, D.: Impact of Volumetric System Design on Compressor Inlet Conditions in Supercritical CO2 Cycles, Proceedings of Global Power and Propulsion Society (GPPS 2020), September 7-9, 2020, Chania, DOI: 10.33737/gpps20-tc-177.

Dolle, B.; Hermes V.; Brillert, D.: Deficits in RANS Modelling in the U-Turn of a Multistage Centrifugal Compressor, Proceedings of Global Power and Propulsion Society, GPPS 2020, September 7-9, 2020, Chania, DOI: 10.33737/gpps20-tc-4.

Schröder, T. R.; Dohmen H. J.; Brillert D.; Benra F.-K.: Impact of Leakage Inlet Swirl Angle in a Rotor-Stator Cavity on Flow Pattern, Radial Pressure Distribution and Frictional Torque in a Wide Circumferential Reynolds Number Range. In: International Journal of Turbomachinery, Propulsion and Power, 5(2), DOI:10.3390/ijtpp5020007.

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2019

Hacks, A.; Freutel, T.; Strätz, M.; Vojacek, A.; Hecker, F.; Starflinger, J.; Brillert, D.: Operational Experiences and Design of the sCO2-HeRo Loop, 3rd European supercritical CO2 Conference. Sept. 19-20,2019, France, Paris, DOI: 10.17185/duepublico/48906.

von Deschwanden, I.; Braun, S.; Brillert, D.: Effect of Interstage Injection on Compressor Flow Characteristic. In Proceedings of the ASME - JSME - KSME Joint Fluids Engineering conference - AJKFLUIDS2019. July 28 - August 1, 2019, San Francisco, CA, USA.

Hacks, A. J.; Schuster, S.; Brillert, D.: Stabilizing Effects of Supercritical CO2 Fluid Properties on Compressor Operation. International Journal of Turbomachinery, Propulsion and Power 2019, 4(3), DOI:10.3390/ijtpp4030020.

Dolle, B.; Brillert, D.; Dohmen, H. J.; Benra, F.-K.: Experimental and Numerical Investigation on the Flow in a Return Channel of Multistage Centrifugal Compressors, Proceedings of ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition GT2019, June 17-21, 2019, Phoenix, Arizona, USA, DOI: 10.1115/GT2019-90455.

Schröder, T. R.; Dohmen, H. J.; Benra, F.-K.; Brillert, D.: Impact of Leakage Inlet Swirl Angle in a Rotor-Stator Cavity on Flow Pattern, Radial Pressure Distribution and Frictional Torque in a Wide Circumferential Reynolds Number Range, 13th European Conference on Turbomachinery Fluid Dynamics & Thermodynamics 2019, ETC  2019, Lausanne, Switzerland.

Dolle, B.; Hermes, V.;  Petry, N.; Brillert, D.; Dohmen H. J.; Benra, F.-K.: Investigation of Aerodynamic Effects in Stator Components of Multistage Centrifugal Compressors, 13th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2019, ETC 2019, Lausanne, Switzerland.

Hacks, A. J.; Schuster, S.; Brillert, D.: Stabilizing Effects of Supercritical CO2 Fluid Properties on Compressor Operation, 13th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2019, ETC 2019, Lausanne, Switzerland.

Strätz, M.; Starflinger J.; Mertz, R.; Brillert D.: Cycle Calculations of a Small-Scale Heat Removal System With Supercritical CO2 as Working Fluid, ASME Journal of Nuclear Engineering and Radiation Science 2019, 5(1), DOI : 10.1115/1.4039884.

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2018

Hu, B.: Numerical and Experimental Investigation on the Flow in Rotor-Stator Cavities, 2018, Universität Duisburg-Essen, Dissertation, DuEPublico ID: 46600.

Schnitzler, J. P.: Untersuchung zum Betriebsverhalten von vielstufigen Axialverdichtern mit Wassereinspritzung, 2018, Universität Duisburg-Essen, Dissertation, Shaker Verlag.

Hacks, A.; Schuster, S.; Dohmen, H. J.; Benra, F.-K.; Brillert, D.: Turbomachine Design for Supercritical Carbon Dioxide within the sCO2-HeRo.EU Project, Journal of Engineering for Gas Turbines and Power 2018, 140(12), DOI:10.1115/1.4040861.

Starflinger, J.; Straetz, M.; Hacks, A.; Brillert, D.; Vojacek, A.; Hajek, P.: The Supercritical CO2 Heat Removal System - Status and Outlook, 12th International Topical Meeting on Nuclear Reactor Thermal-Hydraulics, Operation and Safety, NUTHOS-12, October 14-18, 2018, Qingdao, China, DOI:10.17185/duepublico/47766.

Schuster, S.; Brillert, D.; Benra, F.-K.: Condensation in Radial Turbines – Part II: Application of the Mathematical Model to a Radial Turbine Series. Journal of Turbomachinery 2018, 140(10), DOI: 10.1115/1.4040935.

Schuster, S.; Brillert, D.; Benra, F.-K.: Condensation in Radial Turbines – Part I: Mathematical Modeling, Journal of Turbomachinery 2018, 140(10), DOI: 10.1115/1.4040934.

Domnick, C.; Brillert, D.: Flow Induced Steam Valve Vibrations – A Literature Review of Excitation Mechanisms, Preventive Measures and Design Improvements, Journal of Engineering for Gas Turbines and Power 2018, DOI: 10.1115/1.4041253.

Vojacek, A.; Hacks, A. J.; Melichar, T.; Frybort, O.; Hájek, P.: Challenges in supercritical CO2 power cycle technology and first operational experience at CVR, 2nd European supercritical CO2 Conference, August 30-31, 2018, Essen, Germany, DOI: 10.17185/duepublico/46075.

Hacks, A.; Vojacek, Ales; Dohmen, H. J.; Brillert, D.: Experimental Investigation of the sCO2-HeRo Compressor, 2nd European supercritical CO2 Conference, August 30-31, 2018, Essen, Germany, DOI:10.17185/duepublico/46088.

Hacks, A.; Brillert, D.: Scaling Considerations for the Application of the sCO2-HeRo System in Nuclear Power Plants, 2nd European supercritical CO2 Conference, August 30-31, 2018, Essen, Germany, DOI:10.17185/duepublico/46089.

Hu, B.; Brillert, D.; Dohmen, H. J.; Benra, F.-K.: Investigation on Thrust and Moment Coefficients of a Centrifugal Turbomachine, International Journal of Turbomachinery, Propulsion and Power 2018, 3(2), 9, DOI:10.3390/ijtpp3020009.

Barabas, B.; Brillert, D.; Dohmen, H. J.; Benra, F.-K.: Damping Behavior of Acoustic Dominant Modes in an Aeroacoustic Test Rig Representing a Simplified Geometry of a High Pressure Radial Compressor, Proceedings of ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, GT2018, June 11-15, 2018, Lillestrom, Norway, DOI:10.1115/GT2018-76629.

Hacks, A.; Schuster, S.; Dohmen, H. J.; Benra, F.-K.; Brillert, D.: Turbomachine Design for Supercritical Carbon Dioxide Within the SCO2-HeRo.EU Project, Proceedings of ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, GT2018, June 11-15, 2018, Lillestrom, Norway, DOI:10.1115/1.4040861.

Luo, J.; Dohmen, H.; Benra, F.-K.: Coupled Thermal-Structural-Fluid Numerical Analysis of Gas Lubricated Mechanical Seals, Proceedings of ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, GT2018, June 11-15, 2018, Lillestrom, Norway, DOI:10.1115/GT2018-75458.

Schuster, S.; Brillert, D.; Hermes, V.; Yildiz, A.; Benra, F.-K.: Thermodynamic Modelling Aspects of Wet Compression in Radial Compressors, Proceedings of ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, GT2018, June 11-15, 2018, Lillestrom, Norway, DOI: 10.1115/GT2018-76429.

Wallat, S.; Domnick, C. B.; Musch, C.; Brillert, D.: A Test Rig Concept to Study Fluid Structure Interactions in a Steam Turbine Valve, Proceedings of ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, GT2018, June 11-15, 2018, Lillestrom, Norway, DOI: 10.1115/GT2018-75094.

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2017

Hu, B.; Brillert, D.; Dohmen, H. J.; Benra, F.-K.: Investigation on the Flow in a Rotor-Stator Cavity with Centripetal Through-Flow, International Journal of Turbomachinery, Propulsion and Power 2017, 2(4), 18, DOI:10.3390/ijtpp2040018.

Schuster, S.; Brillert, D.; Martens, U.; Hermes, V.; Benra, F.-K.: Investigation of the evaporation process of liquefied hydrocarbons in front of a compressor, 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017, Maui, Hawaii, USA.

Hu, B.; Brillert, D.; Dohmen, H. J.; Benra, F.-K.: Investigation on thrust and moment coefficients of a centrifugal turbomachine, 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017, Maui, Hawaii, USA.

Barabas, B.; Brillert, D.; Dohmen, H. J.; Benra, F.-K.: The Behavior of the Modal Properties of Weak and Strong Coupled Acoustic Modes at Different Pressure Levels in a Rotor-Stator Test Rig, 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017, Maui, Hawaii, USA.

Schütz, J.; Dohmen, H. J.; Brillert, D.: Numerical investigation of Droplet dispersion in resting environment, cross flow and parallel flow, 17th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2017, Maui, Hawaii, USA.

Hu, B.; Brillert, D.; Dohmen, H. J.; Benra, F.-K.: Investigation on the influence of surface roughness on the moment coefficient in a Rotor-Stator Cavity with centripetal through-flow, Proceedings of the ASME 2017; Fluids Engineering Division Summer Meeting, FEDSM2017, Waikoloa, Hawaii, USA.

von Deschwanden, I.; Benra, F.-K.; Dohmen, H. J.; Brillert, D.: PDA measurements in sprays generated by twin-jet-nozzles, Proceedings of the ASME 2017; Fluids Engineering Division Summer Meeting, FEDSM2017, Waikoloa, Hawaii, USA.

Schuster, S.; Kreischer, C.; Brillert, D.: Introduction of an integrated Turbo-Electrical Machine, Turbomachinery Technical Conference and Exposition GT2017, Proceedings of ASME Turbo Expo 2017, Charlotte, NC, USA.

Strätz, M.; Starflinger, J.; Mertz, R.; Seewald, M.; Schuster, S.; Brillert, D.: Cycle Calculations of a Small-Scale Heat Removal System with Supercritical CO2 as Working Fluid, Proceedings of the 2017 25th International Conference on Nuclear Engineering ICONE25. July 2-6, 2017, Shanghai, China, DOI: 10.1115/ICONE25-66084.

von Deschwanden, I.; Benra, F.-K.; Dohmen, H. J.; Brillert, D.: Zweistrahldüsen – Genauigkeit der Bestimmung von Tropfendurchmessern mit Phasen-Doppler Anemometrie, 1st Symposium on Turbomachinery Test Facilities, 2017, Bochum, Deutschland.

Domnick, C.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.; Musch C.: Clarifying the Physics of Flow Separations in Steam Turbine Inlet Valves at Part Load Operation and Improved Design Considerations, Journal of Fluids Engineering Vol. 139(8), February 2017, DOI 10.1115/1.4036263.

Hu, B.; Brillert, D.; Dohmen, H. J.; Benra, F.-K.: Investigation on the flow in a Rotor-Stator Cavity with centripetal through-flow, 12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2017, ETC2017, Stockholm, Sweden.

Barabas, B.; Brillert, D.; Dohmen, H. J.; Benra, F.-K.: Identification of coupled natural frequencies in a Rotor-Stator Test-Rig for different gas properties, 12th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2017, ETC2017-057, Stockholm, Sweden.

Schuster, S.; Benra, F.-K.; Brillert, D.: Droplet deposition in radial turbines, European Journal of Mechanics - B/Fluids Volume 61, Part 2, Pages 289–346, Rotating Flows, January-February 2017, DOI 10.1016/j.euromechflu.2016.09.002.

Domnick, C.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.; Musch C.: Correlation for prediction of dynamic fluid forces in steam turbine inlet valves, GPPF Global Power and Propulsion Forum 2017, GPPF-2017-5, Zürich, Switzerland.

Domnick, C.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.; Musch C.: Investigation on Flow Induced Vibrations of a Steam Turbine Inlet Valve Considering Fluid Structure Interaction Effects, Journal of Engineering for Gas Turbines an Power Volume 139 (2), February 2017, DOI 10.1115/1.4034352.

Starflinger, J.; Brillert, D.; Frybort, P.; Hajek, P.; Hennink, A.; Freutel, T.: Raising Nuclear Reactor Safety to a Higher Level - The Supercritical CO2 Heat Removal System - "sCO2-HeRo", 26th International Conference Nuclear Energy for New Europe, Bled, Slovenia.

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2016

Domnik, C.: Untersuchung des strömungs- und strukturdynamischen Verhaltens von Dampfturbineneinlassventilen im Teillastbetrieb, 2016, Universität Duisburg-Essen, Dissertation, DuEPublico ID: 43414.

Schuster, S.; Benra, F.-K.; Brillert, D.: Reliability of condensation models for droplet deposition calculations in radial turbines, WSCP16, Wet Steam Conference 2016, Prague, Czech Republic.

Dolle, B.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.: An educational laboratory with a remote controlled centrifugal pump test rig, Proceedings of the ASME 2016 Fluids Engineering Division Summer Meeting, FEDSM2016-7557, Washington, DC, USA, DOI:  10.1115/FEDSM2016-7557.
deutsche Fassung (ab S. 321)

Kefalas, A.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.: Parametric Study of a Novel Groove Design for Dry Gas Seals, 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, 2016, Costa del Sol, Malaga, Spain.

Kefalas, A.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.: Comparison of different numerical approaches for determination of compressible fluid flow in narrow gaps, ASME Turbo Expo, Turbine Technical Conference and Exposition, GT2016, GT2016-57898, Seoul, South Korea, DOI 10.1115/GT2016-57898.

Domnick, C. B.; Benra, F.-K.; Brillert, D.; Musch C.; Dohmen, H. J.: Investigation on Flow Induced Vibrations of a Steam Turbine Inlet Valve Considering Fluid Structure Interaction Effects, ASME Turbo Expo, Turbine Technical Conference and Exposition, GT2016, GT2016-56314, Seoul, South Korea, DOI 10.1115/GT2016-56314.

Domnick, C. B.; Brillert, D.; Dohmen, H. J.; Musch C.; Benra, F.-K.: Innovative simulation techniques to determine dynamic forces in steam turbine inlet valves, Symposium on Innovative Simulations in Turbomachinery Isim-T16, 2016, Regensburg, Germany.

Hu, B.; Benra, F.-K.; Lu, W.; Dohmen, H. J.: Investigation on solid-liquid flow in the rear chamber of multi-stage slurry pumps with leakage flow, 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016, Honolulu, Hawaii, USA.

Schuster, S.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.: Droplet deposition in radial turbines, 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016, Honolulu, Hawaii, USA.

Schuster, S.; Benra, F.-K.; Brillert, D.: Small scale sCO2 compressor impeller design considering real gas conditions, 5th International sCO2 Power Cycles Symposium, Supercritical CO2 Power Cycles Symposium 2016, San Antonio, Texas, USA.

Benra, F.-K.; Brillert, D.; Frybort, P.; Hajek, P.; Rohde, M.; Schuster, S; Seewald, M.; Starflinger, J.: A supercritical CO2 low temperature Brayton-cycle for residual heat removal, 5th International sCO2 Power Cycles Symposium, Supercritical CO2 Power Cycles Symposium, 2016, San Antonio, Texas, USA.

von Deschwanden, I.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.: Droplet evaporation in the context of interstage injection, 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC 2016, Honolulu, Hawaii, USA.

von Deschwanden, I.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.: Untersuchung des Sprayverhaltens zweier aufeinandertreffender Wasserstrahlen mittels Phasen-Doppler-Anemometrie, 12. Tagung Technische Diagnostik 2016, Hochschule Merseburg, Selbstverlag An-Institut Fluid- und Pumpentechnik Merseburg, Deutschland.

Domnick, C. B.; Benra, F.-K.; Brillert, D. Dohmen, H. J.; Musch C.:  Modification of a steam valve diffuser for enhanced full load and part load operation using numerical methods, 16th International Conference on Fluid Flow Technologies, Periodica Polytechnica Mechanical Engineering, Vol. 60(3), April 2016, DOI 10.3311/PPme.9041.

Benra, F.-K.; Brillert, D.; Frybort, P.; Hajek, P.; Rohde, M.; Schuster, S; Seewald, M.; Starflinger, J.: The supercritical CO2 heat removal system - sCO2-Hero, 1st European Seminar on Supercritical CO2 (SCO2) Power Systems, September 2016, Vienna, Austria.

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2015

Schuster, S.: Untersuchung der Entstehung und Bewegung von Flüssigkeitsansammlungen auf Radialturbinenlaufradschaufeln mit einem erweiterten Navier-Stokes-Löser, 2015, Universität Duisburg-Essen, Dissertation, Shaker Verlag.

Domnick, C. B.; Benra, F.-K.; Brillert, D; Dohmen, H. J.; Musch C.: Modification of a steam valve diffuser for enhanced full load and part load operation using numerical methods, 16th International Conference on Fluid Flow Technologies, Conference on Modelling Fluid Flow Technologies 2015, CMFF15, Budapest; Hungary, DOI 10.3311/PPme.9041.

Domnick, C. B.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.; Musch C.:  Numerical investigation on the vibration of steam turbine inlet valves and the feedback to the dynamic flow field, ASME Turbo Expo 2015, Turbine Technical Conference and Exposition, GT2015, GT2015-42182, Montreal, Canada, DOI 10.1115/GT2015-42182.

Hu, B.; Benra, F.-K.; Lu, W.:  Investigation on the solid-liquid flow in the rear chamber of a submersible multi-stage slurry pump, 11th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2015, ETC11, ETC2015-171, Madrid, Spain.

Barabas, B.; Clauss, S.; Schuster, S; Benra, F.-K.; Brillert, D.; Dohmen, H. J.:  Experimental and numerical determination of pressure and velocity distribution inside a rotor-stator cavity at very high circumferential Reynolds numbers, 11th European Conference on Turbomachinery Fluid dynamics & Thermodynamics, ETC11, ETC2015-097, Madrid, Spain, ISBN: 978-000000000-2.

Domnick, C. B.; Benra, F.-K.; Brillert, D. Dohmen, H. J.; Musch C.:  Improving the design of steam turbine inlet valves by numerical methods for enhanced part load operation, 11th European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2015, ETC11, ETC2015-107, Madrid, Spain.

Domnick, C. B.; Benra, F.-K.; Brillert, D. Dohmen, H. J.; Musch C.:  Numerical Investigation of the Fluid and Structure Dynamics of a Steam Turbine Inlet Valve at Different Operation Conditions, VKI Workshop on Safety and Control Valves, von Kármán Institute, 2015, Sint-Genesius-Rode, Belgium.

Domnick, C. B.; Benra, F.-K.; Brillert, D.; Dohmen, H. J.; Musch C.: Numerical Investigation on the Time-Variant Flow Field and Dynamic Forces Acting in Steam Turbine Inlet Valves, Journal of Engineering for Gas Turbines and Power 137 (8), 081601, DOI 10.1115/GT2014-25632.

Feng, J.; Luo, X.; Benra, F.-K.; Dohmen H. J.: Experimental investigation of velocity fluctuations in a radial diffuser pump, Journal of Hydrodynamics, Ser. B, 081601, DOI 10.1016/S1001-6058(15)60490-5.

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2014

Rabs, M.: Numerische Untersuchung des Einflusses von Strömungsinstabilitäten auf den Heißgaseinzug in Gasturbinen Kavitäten unter Verwendung optimierter Rechenmodelle, 2014, Universität Duisburg-Essen, Dissertation, Verlag Dr. Hut.

Zwingenberg, M.: Teilautomatisierte Erstellung und Anpassung von Komponenten-Kennfeldern für Gasturbinen mit Hilfe von Betriebsdaten-Auswertung und numerischen Näherungsverfahren, 2014, Universität Duisburg-Essen, Dissertation, DuEPublico ID: 38850.

Schuster, S.; Benra, F.-K.; Dohmen, H. J.; König S.; Martens, U.: Sensitivity of condensation calculations on model coefficients with respect to turbo machinery applications, 15th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery 2014, ISROMAC-15, Honolulu, Hawaii, USA.

Domnick, C. B.; Benra, F.-K.; Dohmen, H. J.; Musch C.: Numerical Investigation on Under Expanded Wall Jet Separation in a Steam Turbine Valve Diffuser, 15th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery 2014, ISROMAC-15, Honolulu, Hawaii, USA.

Kefalas, A.; Benra, F.-K.; Dohmen, H. J.: Numerical analysis of compressible fluid flow in narrow gaps, ASME 4th Joint US-European Fluids Engineering Division Summer Meeting collocated with the ASME 2014 12th International Conference on Nanochannels, Microchannels, and Minichannels 2014, FEDSM 2014, Chicago, Illinois, USA.

Dohmen, H. J.; Schepers, C.; Schuster, S.; Benra, F.-K.: Analyze of the size of secondary droplets due to film separation at the blade trailing edge, ASME 4th Joint US-European Fluids Engineering Division Summer Meeting, FEDSM 2014, Chicago, USA.

Schuster, S.; Benra, F.-K.; Dohmen, H. J.; König S.; Martens, U.: Sensitivity Analysis of Condensation Model Constants on Calculated Liquid Film Motion in Radial Turbines, Proceedings of ASME Turbo Expo 2014, Turbine Technical Conference and Exposition 2014, GT 2014, Düsseldorf, Germany, DOI 10.1115/GT2014-25652.

Domnick, C. B.; Benra, F.-K.; Dohmen, H. J.; Musch C.: Numerical investigation of the time-variant flow field and dynamic forces acting in steam turbine inlet valves, ASME Turbo Expo 2014, GT 2014, Düsseldorf, Germany, DOI 10.1115/1.4029309.

Schnitzler, J. P.; von Deschwanden, I.; Clauss, S. Benra, F.-K.; Dohmen, H. J.; Werner. K.: Experimental determination of a four stage axial compressor map operating in wet compression, Proceedings of ASME Turbo Expo 2014, Turbine Technical Conference and Exposition 2014, GT 2014, Düsseldorf, Germany, DOI 10.1115/GT2014-26807.

Domnick, C. B.; Benra, F.-K.; Dohmen, H. J.; Musch C.: Instationäre Strömung in Dampfturbineneinlassventilen, Workshop - Instationäre Aerodynamik und Aeroelastik in Turbomaschinen, Bochum, Deutschland.

Schnitzler, J. P.; von Deschwanden, I.; Benra, F.-K.; Dohmen, H. J.: Experimentelle Untersuchung eines 4-stufigen Axialverdichters bei „Nassverdichtung“ Kolloquium - Fluidenergiemaschinen, 2014, Bochum, Deutschland.

Feng, J.; Benra, F.-K.; Luo, X.: Experimental Investigation on Turbulence Fields in a Radial Diffuser Pump Using PIV Technique, Hindawi Publishing Corporation, Advances in Mechanical Engineering 2014, 6(0), DOI: http://dx.doi.org/10.1155/2014/702318.

Benra, F.-K.; Dohmen, H. J.; Clauss, S.; Sehrt, J. T.; Witt, G.: Flow Characteristics of Porous Metal Structures for Specified Permeability Manufactured by Laser Beam Melting Technology, Proceedings of the ASME 2014 International Mechanical Engineering Congress & Exposition 2014, IMECE2014, 2014, Montreal, Canada.

Benra, F.-K.; Schnitzler, J. P.: Strömungsdiagnostik in Mehrphasenströmungen am Lehrstuhl für Strömungsmaschinen der Universität Duisburg-Essen, 11. Tagung Technische Diagnostik, Hochschule Merseburg, Selbstverlag An-Institut Fluid- und Pumpentechnik Merseburg, Deutschland, ISBN: 978-3-942703-26-0.

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2013

Wan, B.; Benra, F.-K.; Dohmen, H. J.: A novel numerical scheme for a scale-invariant form of equation of motion: development of solver and application to engineering flow problems, International Journal of Energy and Power Engineering 2013, 2(2), 37-45, DOI: 10.11648/j ijepe.20130202.12.

Wan, B.; Benra, F.-K.; Dohmen, H. J.: Unique Numerical Scheme for a Modified Equation of Fluid Motion: Approaching New Solver Development to a Fundamental Flow Problem, Science Journal of Physics 2013, DOI 10.7237/sjp/231.

Wan, B.; Benra, F.-K.; Dohmen, H. J.: Application of a new numerical solver to turbomachinery flow problems, Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 2013, 227(6), 628-636. DOI 10.1177/0957650913497359.

Clauss, S.; Schnitzler, J.P.; Barabas, B.; Nagabhushan, P.S.; Benra, F.-K.; Dohmen, H. J.: Test rig design to explore water droplet behavior in a four stage axial compressor, Proceedings of the ASME 2013 International Mechanical Engineering Congress & Exposition, IMECE2013, San Diego, USA, DOI 10.1115/IMECE2013-63429.

Schnitzler, J.P.; Muders, C.; Kefalas, A.; Benra, F.-K.; Dohmen, H. J.: Verbesserung der Ergebnisqualität eines laserbasierten optischen Messverfahrens zur Bestimmung der Tropfendurchmesser eines Wassersprays in einem zylindrischen Messvolumen, Lasermethoden in der Strömungsmesstechnik. 21. Fachtagung, GALA 2013, München.

Rosetti, A.; Nagabhushan, P.S.; Barabas, B.; Schnitzler, J.P.; Kefalas, A.; Benra, F.-K.; Dohmen, H. J.: Use of Euler free surface flow analysis to provide appropriate injection conditions in Euler-Lagrange numerical models, Proceedings of Wessex Multiphase Flow 2013, A Coruña, Spain, DOI 10.2495/MPF130041.

Petry, N.; König, S.; Benra, F.-K.: Influence of the Swirling Flow in the Side Cavities of a High-Pressure Centrifugal Compressor on the Characteristics of Excited Acoustic Modes, ASME Journal of Turbomachinery 2013, 135(3), DOI: 10.1115/1.4007544.

Barabas, B.; Schnitzler, J.P.; Nagabhushan, P.S.; Kefalas, A.; Benra, F.-K.; Dohmen, H. J.: 1D Model for Water Droplet Evaporation at Elevated Gas Pressure and Temperature Levels with a Rosin-Rammler Droplet Distribution, Proceedings of 11th International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows 2013, ISAIF 2013, Shenzhen, China.

Nagabhushan, P.S.; Rosetti, A.; Barabas, B.; Schnitzler, J.P.; Kefalas, A.; Benra, F.-K.; Dohmen, H. J.: Experimental Validation of Methods Providing Boundary Conditions to Simulate the Evaporation Process of Water Injected into High Speed Air Flow, Proceedings of ASME Turbo Expo 2013, GT2013-94966, San Antonio, USA, DOI 10.1115/GT2013-94966.

Wan, B.; Benra, F.-K.; Dohmen, H. J.: Application of a new numerical solver to turbomachinery flow problems, Paper No. 042, Conference Proceedings. Tenth European Conference on Turbomachinery Fluid Dynamics and Thermodynamics 2013, ETC 2013, Lappeenranta, Finland.

⇑ zur Jahresauswahl

2012

Wan, B.: Development of numerical algorithm based on a modified equation of fluid motion with application to turbomachinery flow, 2012, Universität Duisburg-Essen, Dissertation, Shaker Verlag.

Barabas, B.; Kefalas, A.; Schnitzler, J. P.; Rossetti, A.; Benra, F.-K.; Dohmen, H. J.: Water Droplet Evaporation at High Gas Pressure and Temperature Levels – Comparison of Experimental Results with a One-Dimensional Simulation, Computational Thermal Sciences: An International Journal 2013, 5(3), 215-226, DOI 10.1615/ComputThermalScien.2013006358.

Pei, J.; Yuan, S.; Benra, F.-K.; Dohmen, H. J.: Numerical Prediction of Unsteady Pressure Field Within the Whole Flow Passage of a Radial Single-Blade Pump, ASME, Journal of Fluids Engineering 2012, 134(10), DOI: 10.1115/1.4007382.

Schnitzler, J. P.; Nagabhushan, P.; Kefalas, A.; Barabas, B.; Benra, F.-K.; Dohmen H. J.: Experimentelle und numerische Untersuchung der Verdampfung von Wassertropfen bei variablen Druck- und Temperaturbedingungen, 10. Tagung Technische Diagnostik, An-Institut Fluid- und Pumpentechnik Merseburg, Selbstverlag, ISBN 978-3-942703-13-0.

Kefalas, A.; Schnitzler, J.P.; Barabas, B.; Benra, F.-K.; Dohmen, H. J.: Experimentelle Untersuchungen zum Verdampfungsprozess von Wassertropfen bei hohen Druck- und Temperaturniveaus, Fachtagung “Lasermethoden in der Strömungsmesstechnik”, 2012, Rostock, ISBN 978-3-9805613-8-9.

Schuster, S.; Benra, F.-K.; Dohmen, H. J.: Influence of Different Gas Models on the Numerical Results of High-Velocity Condensation, Conference on Modelling Fluid Flow (CMFF’12), 15th International Conference on Fluid Flow Technologies 2012, Budapest, Hungary, ISBN 978-963-08-4588-5.

Barabas, B.; Kefalas, A.; Schnitzler, J. P.; Dohmen, H. J.; Benra, F.-K.: Water Droplet Evaporation at High Pressure and Temperature Levels: Part II: Comparison of Experimental Results With a 1D Simulation, 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, HEFAT2012, Malta.

Kefalas A.; Barabas B.; Schnitzler J.P.; Benra F.-K.; Dohmen H. J.: Water Droplet Evaporation at High Pressure and Temperature Levels: Part I: Experimental Investigations of the Spray Pattern in Dependence on Parameter Variation, HEFAT2012, 9th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Malta.

Dohmen, H. J.; Benra, F.-K.; Brinkhorst, S.: Improvement of Axial-Flow Pump Part Load Behavior by a Double Inlet Nozzle, Proceedings of the ASME 2012 Fluids Engineering Summer Meeting, FEDSM2012-72211, Rio Grande, Puerto Rico, DOI 10.1115/FEDSM2012-72211.

Schuster, S.; Dohmen, H. J.; Benra, F.-K.: Numerical Simulation of a Micro Pelton Turbine Working in the Two-Phase Flow Regime, Proceedings of the ASME 2012 Fluids Engineering Summer Meeting, FEDSM 2012, Rio Grande, Puerto Rico.

Pei, J.; Dohmen, H. J.; Yuan, S.-Q.; Benra, F.-K.: Investigation of unsteady flow-induced impeller oscillations of a single-blade pump under off-design conditions, Journal of Fluids and Structures 2012, 35, 89–104, DOI 10.1016/j.jfluidstructs.2012.08.005

Rabs, M.; Benra, F.-K.; Schneider, O.: Emergence of Kelvin-Helmholtz instabilities in gas turbine rim cavities – A parameter study, Proceedings of ASME Turbo Expo 2012, GT 2012, Copenhagen, Denmark.

Petry, N.; König, S.; Benra, F.-K.: Influence of the Swirling Flow in the Side Cavities of a High-Pressure Centrifugal Compressor on the Characteristics of Excited Acoustic Modes, Proceedings of ASME Turbo Expo 2012, GT 2012, Copenhagen, Denmark.

Zwingenberg, M.; Dobrzynski, B.; Klumpp, S.; Werner, K.; Benra, F.-K.: Generation of Gas Turbine Component Maps on Basis of Operational Data, Proceedings of ASME Turbo Expo 2012, GT 2012, Copenhagen, Denmark.

Schnitzler, J.-P.; Feng, J., Benra, F.-K.; Dohmen, H. J.; Werner, K.: Test Rig Design for Investigations of Water Droplet Evaporation at High Pressure and Temperature Levels, 14th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery 2012, ISROMAC-14, Honolulu, HI, USA.

Rabs, M.; Benra, F.-K.; Dohmen, H. J.; Lock, G.-D.; Schneider, O.: Model Simplifications for Numerical Simulations of Ingestion Through Gas Turbine Rim Seals, 14th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery 2012, ISROMAC-14, Honolulu, HI, USA.

Will, B.-Ch.; Benra, F.-K.; Dohmen, H. J.: Investigation of the Flow in the Impeller Side Clearances of a Centrifugal Pump with Volute Casing, Journal of Thermal Science 2012, 21(3), 197−208, DOI 10.1007/s11630-012-0536-3.

Martha, A.; Sehrt, J. T.; Benra, F.-K.; Köhler, P.: Auslegung, Konstruktion und Fertigung von strömungsmechanischen Funktionsprototypen mittels Rapid Manufacturing, RTejournal - Forum für Rapid Technologie 2012, 9.

⇑ zur Jahresauswahl

2011

Will, B.: Theoretical, numerical and experimental investigation of the flow in rotor stator cavities with application to a centrifugal pump, 2011, Universität Duisburg-Essen, Dissertation, DuEPublico ID: 26782.

Deckers, K.: Beitrag zur Berechnung der Kühlluftströmung in Vordrallsystemen von Gasturbinen, 2011, Universität Duisburg-Essen, Dissertation, Verlag im Internet GmbH.

Petry, N.: Experimentelle Untersuchung aeroakustischer und aeroelastischer Phänomene in Hochdruck-Radialverdichtern, 2011, Universität Duisburg-Essen, Dissertation, DuEPublico ID: 27385.

Rabs, M.; Benra, F.-K.; Domnick, C.; Schneider, O.: Computational Study of Kelvin-Helmholtz Instability created by Interaction of the Mainstream Flow and the Seal Flow in Gas Turbines, ASME Turbo Expo 2011, GT 2011, Vancouver, Canada.

Schuster, S.; Benra, F.-K.; Dohmen, H. J.: Investigation of nucleation influence on the efficiency of radial turbines, 12th International Conference on Multiphase Flow in Industrial Plants 2011, MFIP12, Ischia, Italy.

Dohmen, H. J.; Schnitzler, J. Ph.; Benra, F.-K.: Efficiency Augmentation of Gas Turbine Cycles, 8th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics 2011, Pointe Aux Piments, Mauritius.

Will, B.-Ch.; Benra, F.-K.; Dohmen, H. J.: Investigation of the Flow in the Side Chambers of a Centrifugal Pump with Volute Casing, Proceedings of the 10th International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows 2011, Brussels, Belgium.

Wan, B.; Benra, F.-K.; Dohmen, H. J.: A New Numerical Scheme for a Modified Equation of Fluid Motion: Solver Development and Application to a Fundamental Flow Problem, WSEAS, Transactions on Fluid Mechanics, accepted for publication.

Benra, F.-K.: Untersuchung der Strömungsinstabilitäten im Teillastbereich von Axialpumpen, Delta 2011, 17( 3), 42.

Benra, F.-K.: Radialturbinen für die Restwärmeverwertung, Ingenieurspiegel 2011, 3, 48-49.

Pei, J., Dohmen, H. J., Yuan, S. Q., & Benra, F.-K.: Investigation of unsteady flow-induced impeller oscillations of a single-blade pump under off-design conditions. Journal of Fluids and Structures, 35, 89–104, DOI: 10.1016/j.jfluidstructs.2012.08.005.

Pei, J.; Benra, F.-K.; Dohmen, H. J.: Application of Different Strategies of Partitioned Fluid-Structure Interaction Simulation for a Single-Blade Pump Impeller, Proceedings of the Institution of Mechanical Engineers, Part E, Journal of Process Mechanical Engineering 2012, 226(4), 297-308, DOI: 10.1177/0954408911432974.

Benra, F.-K.; Dohmen, H. J.; Pei, J.; Schuster, S.; Wan, B.: A Comparison of One-Way and Two-Way Coupling Methods for Numerical Analysis of Fluid-Structure Interactions, Journal of Applied Mathematics 2011, DOI 10.1155/2011/853560.

Feng, J..; Benra, F.-K.; Dohmen, H. J.: Investigation of Periodically Unsteady Flow in a Radial Pump by CFD Simulations and LDV Measurements, ASME Journal of Turbomachinery 2011, 133(1), DOI: 10.1115/1.4000486.

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2010

Schuster, S.; Benra, F.-K.; Dohmen, H. J.: Application of Euler-Euler Model for Numerical Simulation of a Radial Turbine Working in the Two-Phase Flow Regime, WSEAS Transactions on Fluid Mechanics 2010, 5(4), 276-286, ISSN: 1790-5087.

Schuster, S.; Benra, F.-K.; Dohmen, H. J.; Fagerli, B.: Numerical simulation of two phase flow in a Pelton turbine with Eulerian-Eulerian method, 8th ANSYS & FZD Multiphase Flows Short Course and Workshop, Dresden, June 2010.

Petry, N.; Benra, F.-K.: The technique of dithering—a parameter study, MEASUREMENT SCIENCE AND TECHNOLOGY 2011, 22(2), DOI 10.1088/0957-0233/22/2/025401.

Feng, J.; Benra, F.-K; Dohmen, H. J.: Unsteady Flow Investigation in Rotor-Stator Interface of a Radial Diffuser Pump, Forschung im Ingenieurwesen 2010, 74(4), 233–242, DOI 10.1007/s10010-010-0121-4.

Feng, J.; Benra, F.-K.; Dohmen, H. J.: Application of Different Turbulence Models in Unsteady Flow Simulations of a Radial Diffuser Pump, Forschung im Ingenieurwesen 2010, 74(3), 123-133, DOI: 10.1007/s10010-010-0121-4.

Zwingenberg, M.; Benra, F.-K.; Werner, K.: Entwicklung und Tuning eines Mehr-Fehler-Isolators für die thermodynamische Diagnose von Gasturbinen, 9. Tagung Technische Diagnostik, Tagungsband Selbstverlag An-Institut Fluid- und Pumpentechnik Merseburg, ISBN: 978-3-9811266-1-4, Merseburg, Oktober 2010.

Benra, F.-K.; Dohmen, H. J.: A Closed Loop Approach to Simulate the Unsteady Three-Dimensional Flow in an Axial Flow Pump, Proceedings of FEDSM-ICNMM2010 2010, ASME Fluids Engineering Conference, August  2010, Montreal, Canada.

Wan, B.; Benra, F.-K.; Dohmen, H. J.: Application of a New Numerical Solver for the Scale-Invariant Form of the Equation of Motion to Engineering Flow Problems, 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, HEFAT2010, July 2010, Antalya, Turkey.

Petry, N.; Benra, F.-K.; König. S.: Experimental Study of Acoustic Resonances in the Side Cavities of a High-Pressure Centrifugal Compressor Exited by Rotor/Stator Interaction, Proceedings of ASME Turbo Expo 2010: Power for Land, Sea and Air, GT2010, June 2010, Glasgow, UK.

Zwingenberg, M.; Benra, F.-K.; Werner. K.; Dobrzynski. B.: Generation of Turbine Maps Using a Fusion of Validated Operational Data and a Streamline Curvature Method, Proceedings of ASME Turbo Expo 2010: Power for Land, Sea and Air, GT2010, June 2010, Glasgow, UK, GT2010-22738.

Will, B.; Benra, F.-K.; Dohmen, H. J.:  Numerical and Experimental Investigation of the Flow in the Side Cavities of a Centrifugal Pump, The 13th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC13-2010-0002, Honolulu, Hawaii, April 2010.

Zwingenberg, M.; Benra, F.-K.; Werner, W.: [121]: Validation of Operational Gas Turbine Data Using a Model Based Approach, The 13th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, ISROMAC13-2010-0001, Honolulu, Hawaii, April 2010.

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2009                    

Feng, J.: Numerical and Experimental Investigations on Rotor-Stator Interaction in Radial Diffuser Pumps, 2009, Universität Duisburg-Essen, Dissertation, Shaker Verlag.

Hirschberger, M.; J. Kuhlmann, J.; Benra, F-K.: Water & wastewater: Designing high-power sewage water pumps, Elsevier Ltd., WORLD PUMPS, July 2009.

Feng, J.; Benra F.-K.; Dohmen, H. J.: Comparison of Periodic Flow Fields in a Radial Pump among CFD, PIV and LDV
International Journal of Rotating Machinery 2009.

Feng, J.; Benra, F.-K.; Dohmen, H. J.: Investigations on Turbulence and Blade Orientation Effects in a Radial Diffuser Pump by Laser Doppler Velocimetry, Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 2009, 223(8).

Feng, J..; Benra, F.-K.; Dohmen, H. J.: Unsteady Flow Visualization at Part-Load Conditions of a Radial Diffuser Pump by PIV and CFD,  Journal of Visualization 2009, 12(1), 65-72,DOI: 10.1007/BF03181944,

Benra, F.-K.; Feng, J.; Dohmen, H. J.: Quantitativer Vergleich von gemessenen Strömungsgeschwindigkeiten einer radialen Kreiselpumpe mit Ergebnissen numerischer Simulationen, 17. Fachtagung “Lasermethoden in der Strömungsmesstechnik”, September 2009, Erlangen.

Benra, F.-K.; Dohmen, H. J.: Application of Simulation Methods Considering the Interaction between Fluid and Structure
Proceedings of the 7th IASME/WSEAS Int. Conf. on FLUID MECHANICS (FMA'09), Moscow, Russia, 2009.

Wan, B.; Benra, F.-K.; Sohrab,S. H.: A Comparative Numerical Study of the Modified versus the Navier-Stokes Equations of Motion, Proceedings of the 7th IASME/WSEAS Int. Conf. on FLUID MECHANICS (FMA'09), Moscow, Russia, 2009.

F.-K. Benra: Verstopfungsfreie Kreiselpumpen für eine zuverlässige Abwasserförderung, Ingenieurspiegel 2009, (3), 24-25.

Pérez Flores, P.; Kosyna, G.; Benra, F.-K.; Dohmen, H. J.; Gandhi, B. K.; Kumar, M.: Improvement Of Axial-Flow Pump Part Load Behaviour – An Experimental And Numerical Study, Conference on Modelling Fluid Flow (CMFF’09), the 14th International Conference on Fluid Flow Technologies, Budapest, Hungary, 2009.

Feng, J.; Benra, F.-K.; Dohmen, H. J.: Time-Resolved Particle Image Velocimetry (PIV) Measurements In A Radial Diffuser Pump, Proceedings of FEDSM2009, ASME Fluids Engineering Conference, FEDSM2009-78297, Vail, Colorado, USA, 2009.

Will, B.-C.; Benra, F.-K.: Effects and Calculation Of Fluid Flow In Rotor-Stator Cavities, Proceedings of FEDSM2009, ASME Fluids Engineering Conference, FEDSM2009-78503, Vail, Colorado, USA, 2009.

Feng, J.; Benra, F.-K.; Dohmen, H. J.: The Use Of Real Gas Properties For Design And Flow Field Simulations Of A Small Centripetal Steam Turbine, Proceedings of FEDSM2009, ASME Fluids Engineering Conference, FEDSM2009-78330, Vail, Colorado, USA, 2009.

Rabs, M.; Benra,F.-K.; Dohmen, H. J.; Schneider, O.: Investigation Of Flow Instabilities Near The Rim Cavity Of A 1.5 Stage Gas Turbine, Proceedings of ASME Turbo Expo 2009: Power for Land, Sea and Air, GT2009-59965, 2009, Orlando, Florida, USA, 2009.

Petry, N.; Benra, F.-K.; König, S.; Woiczinski, Ch.: Interaction Between Aerodynamic Phenomena And Impeller Structure Of High Pressure Radial Compressors, Proceedings of the 8th European Conference on Turbomachinery, Graz, Austria, 2009.

Feng, J.; Benra, F.-K.; Dohmen, H. J.: Experimental Evaluation Of The Time-Variant Flow Field In A Radial Diffuser Pump By Laser Doppler Velocimetry, Proceedings of the 8th European Conference on Turbomachinery, Graz, Austria, 2009.

⇑ zur Jahresauswahl

2008

Feng, J.; Benra, F-K.; Dohmen, H. J.: [104]
Analysis of Unsteady Flow in a Radial Diffuser Pump
The 4th International Symposium on Fluid Machinery and Fluid Engineering, NO. 4ISFMFE-Ab08, November 2008, Beijing, China

Hirschberger, M.; Kuhlmann, J.; Benra, F.-K.:[103]
Computer based development of sewage water pumps for extreme operating conditions and high power consumption
VDMA International Rotating Equipment Conference 2008, Düsseldorf, Germany

Benra, F.-K.; Dohmen, H. J.: [102]
Part Load Characteristic Investigation of a Highly Loaded Axial Flow Pump with Casing Treatment Comparison of Experimental and Numerical Results
IAHR, 24th Symposium on Hydraulic Machinery and Systems, 2008, Foz do Iguasso, Brasil

Feng, J.; Benra, F-K.; Dohmen, H. J. :[101]
Measurement of Periodic Flow Field in a Radial Diffuser Pump by PIV and LDV Methods
IAHR, 24th Symposium on Hydraulic Machinery and Systems, 2008, Foz do Iguasso, Brasil

Zwingenberg, M.; Benra, F.-K.; Werner, K.:[100]
Thermodynamische Diagnose von Gasturbinen: Theorie und Praxis
8. Tagung Technische Diagnostik, Tagungsband Selbstverlag An-Institut Fluid- und Pumpentechnik Merseburg, ISBN: 978-3-9811266-1-4, Merseburg,  Oktober 2008

Benra, F.-K.; Feng, J.; Dohmen, H. J.: [99]
Messung der periodisch-instationären Strömung im Laufrad und im beschaufelten Diffusor einer radialen Kreiselpumpe kleiner spezifischer Drehzahl mit LDV
16. Fachtagung “Lasermethoden in der Strömungsmesstechnik”, September 2008, Karlsruhe

Will, B.-Ch.; Benra, F.-K.:  [98]
The Rise of Complexity in Describing Fluid Flow in Rotating Cavities
Proceedings of FEDSM2008, ASME Fluids Engineering Conference, 2008, FEDSM2008-55341, Jacksonville, Florida USA

Benra F.-K.; Dohmen H. J.:  [97]
Unsteady Three-Dimensional Flow Phenomena In An Axial Flow Pump At Different Operating Points
Proceedings of FEDSM2008, ASME Fluids Engineering Conference, 2008, FEDSM2008-55344, Jacksonville, Florida USA

Benra F.-K.; Dohmen H. J.:[96]
Numerical and Experimental Investigation of the Flow in a Centrifugal Pump Stage
Proceedings of the 5th WSEAS Int. Conf. on FLUID MECHANICS (FLUIDS'08), Acapulco, Mexico, January 2008

Benra, F.-K.; Dohmen, H. J.: [95]
Investigation on the Time-Variant Flow in a Single-Blade Centrifugal Pump
Proceedings of the 5th WSEAS Int. Conf. on FLUID MECHANICS (FLUIDS'08), Acapulco, Mexico, January 2008

Benra, F.-K.; Dohmen, H. J., Schneider, O.:[94]
Application of an Enhanced 1D Network Model to Calculate the Flow Properties of a Pre-Swirl Secondary Air System
Proceedings of GT2008, ASME Turbo Expo 2008: Power for Land, Sea and Air, GT2008-50442, Berlin, Germany

Zwingenberg, M; Benra, F.-K.; Werner, K.:[93]
Improvement of Performance Prediction by Automated Assimilation of Gas Turbine Component Maps
Proceedings of GT2008, ASME Turbo Expo 2008: Power for Land, Sea and Air, GT2008-51068, Berlin, Germany

Benra, F.-K.; Feng, J.; Dohmen, H. J.:[92]
PIV Measurements Of Unsteady Flow In A Diffuser Pump At Different Flow Rates
The 12th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, ISROMAC12-2008-20024, Hawaii, February 17-22, 2008

 

⇑ zur Jahresauswahl

2007

Feng, J.; Benra, F.-K. ; Dohmen, H. J.
Qualitative Comparison of Unsteady Flow between Numerical and Experimental Results in a Radial Diffuser Pump, The Visualization Society of Japan, Journal of Visualization, Vol. 10, No. 4 (2007) pp. 349-357

Benra, F.-K.; Feng, J.; Dohmen, H. J.
Untersuchung des periodisch-instationären Geschwindigkeitsfeldes im Laufrad und im beschaufelten Diffusor einer radialen Kreiselpumpenstufe kleiner spezifischer Drehzahl, 15. GALA Fachtagung “Lasermethoden in der Strömungsmesstechnik”, 4. – 6. September 2007, Rostock

Benra, F.-K.
Application of Fluid/Structure Interaction Methods to Determine the Impeller Orbit Curves of a Centrifugal Pump, Proceedings of the 5th IASME / WSEAS International Conference on FLUID MECHANICS and AERODYNAMICS, FMA'07, Paper 565-199, August 2007, Vouliagmeni, Greece

Benra F.-K.; Dohmen H. J.
Comparison of pump impeller orbit curves obtained by measurement and FSI simulation, Proceedings of 2007 ASME Pressure Vessels and Piping Division Conference, PVP2007-26149, July 22-26, 2007, San Antonio, Texas

Benra F.-K.; Dohmen H. J.
Numerical and Experimental Evaluation of the Time-Variant Flow Field in a Single-Blade Centrifugal Pump, Proceedings of HEFAT2007, 5th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, 1 – 4 July 2007, Sun City, South Africa

Benra, F.-K.; Feng, J.; Dohmen, H. J.; Feng, J. [86]
Measurement of the Periodic Flow Field in a Radial Diffuser Pump by the PIV Method, Proceedings of 5th Joint ASME/JSME Fluids Engineering Conference, FEDSM2007-37400, July 30-August 2, 2007 San Diego, California, USA

Benra, F.-K.; Dohmen, H. J.; Schmidt, M.
Flow Phenomena in a Highly-Loaded Single-Stage Axial Flow Pump – Comparison of Experimental and Numerical Results, Proceedings of 5th Joint ASME/JSME Fluids Engineering Conference, FEDSM2007-37552, July 30-August 2, 2007 San Diego, California, USA

Benra, F.-K.; Dohmen, H. J.; Jarzombek, K.
Partikelabscheidung im Kühlluftsystem von Gasturbinen, Essener Unikate

Feng,J; Benra, F.-K.; Dohmen, H. J.
Numerical Investigation on Pressure Fluctuations for Different Configurations of Vaned Diffuser Pumps, International Journal of Rotating Machinery, Vol. 2007, Article ID 34752, 10 pages, 2007, DOI 10.1155/2007/34752,

Benra, F.-K.; Dohmen, H. J.; Jarzombek, K.; Schneider, O.
CFD analysis of flow in a high-radius pre-swirl system
Proceedings of GT2007, ASME Turbo Expo 2007: Power for Land, Sea and Air, May 14-17, 2007, Montreal, Canada, GT2007-27404

Benra, F.-K.; Feng, J.; Dohmen, H. J.
Numerical Investigation on Impeller-Diffuser Interactions in a Radial Pump, Proceedings of the 7th European Conference on Turbomachinery 2007, Athens, Greece, March 2007, pp. 773 - 782

Benra, F.-K.; Dohmen, H. J.
Vergleich von berechneten und gemessenen Strömungsgeschwindigkeiten in einer Kreiselpumpe mit Einschaufelrad, Zeitschrift Δp, Ausgabe I, Februar/März 2007

Weltersbach, D.; Brillert, D.; Cichon, C.
Investigation of a Pre-Swirl Cooling Air Flow System with Data Acquisition in the Absolute and Relative Frame of Reference, 5th International Conference on Fluid Mechanics and Aerodynamics 2007, WSEAS 2017/p>

Brillert D.; Lingner, U.; Maghon, H.:
Ten Years od Operating Experience with SGT5-4000F, Market-Driven Evolution of Gas Turbines and Plants, Power-GEN Asia 2007, Bangkok, Thailand, Proceedings of 6. International Conference on Fluid Power Transmission and Control, Hangzhou, China, April 2005

Feng,J; Benra, F.-K.; Dohmen, H. J.
A Study on Impeller-Diffuser Interactions in a Radial Pump, Proceedings of the 7th European Conference on Turbomachiner 2007y, Athen, Greece

⇑ zur Jahresauswahl

2006

Benra, F.-K.; Dohmen, H. J.; Sommer, M.  
Flow Field Visualization of a Single-Blade Centrifugal Pump using PIV-Method - Comparison to Numerical Results
Journal of Visualization, Vol. 9, No. 4 (2006) 358

Benra, F.-K.; Savilius, N. 
Experimental Determination of the Hydrodynamic Imbalance of a Single-Blade Centrifugal Pump
WSEAS, Transactions on Fluid Mechanics, Issue 6, Volume 1, June 2006, ISBN 1790-5087, pp. 707 - 713

Benra, F.-K.; Feng, J.; Dohmen, H. J.
Numerical Investigation of Radial Gap Influence on Diffuser Induced Impeller Flow 
WSEAS, Transactions on Fluid Mechanics, Issue 5, Volume 1, May 2006, ISBN 1790-5087, pp. 472 - 47

Benra, F.-K. [76]
Reliable Transport of Sewage Water with Centrifugal Pumps – All Technical Problems Solved?
Proceedings of the 3rd Dubrovnik Conference on Sustainable Development of Energy, Water and Environment Systems, Published by World Scientific Publishing Co. Pte. Ltd., Singapore, 2006

Benra, F.-K.; Dohmen, H. J.
Einsatz von Fluid-Struktur-Interaktionsmethoden zur Berechnung der Orbitkurven von Pumpenrotoren
7. Tagung Technische Diagnostik, Tagungsband Selbstverlag An-Institut Fluid- und Pumpentechnik Merseburg, ISBN: 3-9807981-9-4, Merseburg,  Oktober 2006

Benra, F.-K.; Dohmen, H. J. 
Quantitativer Vergleich von numerisch und experimentell ermittelten Strömungsfeldern in einer Einschaufelradpumpe
GALA, 14. Fachtagung "Lasermethoden in der Strömungsmesstechnik", Braunschweig, 5. - 7. September 2006

Benra, F.-K.; Feng, J.; Dohmen, H. J.:
Numerical Study on Impeller-Diffuser Interactions with Radial  Gap Variation Pump
Proceedings of the 4th WSEAS International Conference on FLUID MECHANICS and AERODYNAMICS, Elounda, Agios Nicolaos, Crete Island, Greece, August 2006

Benra, F.-K.; Savilius, N.:
Experimental Investigation of Transient Hydrodynamic Forces of a Single-Blade Centrifugal Pump
Proceedings of the 4th WSEAS International Conference on FLUID MECHANICS and AERODYNAMICS, Elounda, Agios Nicolaos, Crete Island, Greece, August 2006

Benra, F.-K.; Zwingenberg, M.:
Measurement of the Periodic Unsteady Flow in a Single-Blade Centrifugal Pump by PIV-Method
Proceedings of the 4th WSEAS International Conference on FLUID MECHANICS and AERODYNAMICS, Elounda, Agios Nicolaos, Crete Island, Greece, August 2006

Benra, F.-K.; Sohrab, S. H.:
Modified Theory of Laminar Flow Around Rigid and Liquid Cylinders
Proceedings of the 4th WSEAS International Conference on FLUID MECHANICS and AERODYNAMICS, Elounda, Agios Nicolaos, Crete Island, Greece, August 2006

Benra, F.-K.:
Practical Application of Basic Fluid Mechanic Relations to Estimate the Impact of Surface Roughness Due to Milling on the Aerodynamics of Shrouded Centrifugal Compressor Impellers
WSEAS Transactions on Fluid Mechanics, Issue 1, Volume 1, January 2006, pp. 22 - 30

Benra, F.-K.; Feng, J., Dohmen, H. J.:
The Influence of Leakage Flow on the Main Flow in a Radial Pump Stage
23rd IAHR SYMPOSIUM on Hydraulic Machinery and Systems Yokohama, Japan, October 17 - October 21, 2006

Benra, F.-K.; Dohmen, H. J.; Zwingenberg, M.:
Comparison of Experimental and Numerical Obtained Velocity Fields in a Single-Blade Centrifugal Pump
Forum on Fluid Machinery, FEDSM 2006, Miami, Florida, USA, July 2006

Benra, F.-K.; Dohmen, H. J.; Wan, Bo:
Determination of Pump Impeller Deflection; comparison of FSI-Simulations to Measurements
Forum on Fluid Machinery, FEDSM 2006, Miami, Florida, USA, July 2006

Benra, F.-K.; Feng, J.; Dohmen, H. J.:
A New Method to Simulate Rotor-Stator Interaction in a Centrifugal Pump Stage
8th Biennial ASME Conference Engineering Systems Design and Analysis, ESDA 2006, Torino, Italy, July 2006

Benra, F.-K.:
Application of Basic Fluid Mechanic Relations to Estimate the Influence of Surface Roughness on the Aerodynamics of Centrifugal Compressor Impellers
Proceedings of the WSEAS/IASME International Conference on FLUID MECHANICS (FLUIDS '06), Miami, Florida, January 2006

Jarzombek, K.; Dohmen, H. J.; Benra, F.-K.; Schneider, O.:
Flow Analysis In Gas Turbine Pre-Swirl Cooling Air Systems - Variation of Geometric Parameters
Proceedings of ASME/IGTI Turbo Expo 2006, May 2006

Benra, F.-K.; Klapdor, V.; Schulten, M.:
Sensitivity Study on the Impact of Surface Roughness due to Milling on the Efficiency of Shrouded Centrifugal Compressor Impellers
Proceedings of ASME/IGTI Turbo Expo 2006, May 2006

Benra, F.-K.; Feng, J.; Dohmen, H. J.:
Numerical Study on the Pressure Fluctuations in a Complete Stage of a Centrifugal Pump
ISROMAC, Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, Hawaii, USA, February 2006

Benra, F.-K.; Dohmen, H. J.; Sommer, M.:
Experimental Investigation of Hydrodynamic Forces for Different Configurations of Single-Blade Centrifugal Pumps
ISROMAC, Proceedings of the 11th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, Hawaii, USA, February 2006

Benra, F.-K.:
Numerical and Experimental Investigation on the Flow Induced Oscillations of a Single-Blade Pump Impeller
ASME Journal of Fluids Engineering, July 2006, Vol. 128 pp. 783-793

Benra, F.-K.:
Practical Application of Basic Fluid Mechanic Relations to Estimate the Impact of Surface Roughness Due to Milling on the Aerodynamics of Shrouded Centrifugal Compressor Impellers, WSEAS, Transactions on Fluid Mechanics 2006, Heft 1

Benra, F.-K.; Dohmen, H. J.:
Einsatz von Fluid-Struktur-Interaktionsmethoden zur Berechnung der Orbitkurven von Pumpenrotoren, 7. Tagung Technische Diagnostik 2006, Merserburg

Benra, F.-K.; Dohmen, H. J.:
Quantitativer Vergleich von numerisch und experimentell ermittelten Strömungsfeldern in einer Einschaufelpumpe,Fachtagung Lasermethoden in der Strömungsmesstechnik 2006, Braunschweig, Physikal.-Techn. Bundesanst, 2006

⇑ zur Jahresauswahl

2005

Benra, F.-K.:
Untersuchung der periodisch instationären Strömung in einer Einschaufelradpumpe
GALA, 13. Fachtagung "Lasermethoden in der Strömungsmesstechnik", Cottbus, 6. - 8. September 2005

Benra, F.-K.; Dohmen, H. J.; Sommer, M.:
Flow Field Visualization of a Single-Blade Centrifugal Pump using PIV-Method - Comparison to Numerical Results
Proceedings of the PSFVIP5, Daydream Island, Australia, September 2005

Benra, F.-K.; Dohmen, H. J.:
Theoretische und experimentelle Untersuchung des Sekundärluftsystems stationärer Gasturbinen
Tagungsbeitrag zur Siemens-Jahrestagung, Universität Duisburg-Essen, Duisburg, Juni 2005

Benra, F.-K.; Dohmen, H. J.; Jarzombek, K.; Schneider, O.
Investigations of Dust Separation in a Gasturbine Pre-Swirl Cooling Air System Using New, Enhanced Simulation Methods
Proceedings of ASME Fluids Engineering Summer Conference, FEDSM2005-77212, June 19-23, 2005, Houston, Texas, USA

Benra, F.-K.; Dohmen, H. J.:
Numerical Investigation of the Transient Flow in a Centrifugal Pump Stage
Proceedings of ASME Fluids Engineering Summer Conference, FEDSM2005-77419, June 19-23, 2005, Houston, Texas, USA

Benra, F.-K.; Dohmen, H. J.; Sommer, M.:
Periodically Unsteady Flow in a Single-Blade Centrifugal Pump - Numerical and Experimental Results
Proceedings of ASME Fluids Engineering Summer Conference, FEDSM2005-77219, June 19-23, 2005, Houston, Texas, USA

Benra, F.-K.:
Transport of Sewage Water with Centrifugal Pumps - Technical Problems and Paths to Their Solution
Proceedings of Dubrovnik Conference on Sustainable Development of Energy, Water and Environment Systems, Dubrovnik, Croatia, 5.-10. June 2005

Benra, F.-K.; Sommer, M.:
Comparison of Calculated and Measured Hydrodynamic Forces of a Centrifugal Sewage Water Pump
Proceedings of 1st International Conference on Experiments / Process / System Modeling / Simulation / Optimization, Athens, Greece, 6-9 July 2005

Benra, F.-K.; Dohmen, H. J.; Jarzombek, K.; Schneider, O.:
A Contribution to the Abrasive Effect of Particles in a Gas Turbine Pre-Swirl Cooling Air System
Proceedings of ASME/IGTI Turbo Expo 2005, Paper GT2005-68188, Reno, Tahoo, Nevada, June 2005

Benra, F.-K.; Dohmen, H. J.; Feng, J.:
Numerical and Experimental Investigation of Cavitation Flow in a Centrifugal Pump
Proceedings of 5th International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion, Xi’an, China, July 2005

Benra, F.-K.;  Feng, J.:
Numerical Simulation and Experiments on the Flow in a Multistage Centrifugal Pump,
Proceedings of 6. International Conference on Fluid Power Transmission and Control, Hangzhou, China, April 2005

Schneider, O
Untersuchung zum Abscheideverhalten von Partikeln in einem Vordrall-Kühlluftsystem für Gasturbinen
Dissertation, Universität Duisburg-Essen, 2005

Benim, A.C; Cagan, M.; Bonhoff, B.; Brillert D.:
Simulation of Flow in Pre-Swirl Systems with Emphasis on Rotor-Stator Treatment,3rd M.I.T Conference on Computational Fluid and Solid Mechanics 2005,Massachusetts Institue of Technology, Boston USA 2005

Benim, A.C; Cagan, M.; Bonhoff, B.; Bricaud,C; Brillert D.:
Computational Analysis of Flow and Heat Transfer in a Direct-Transfer Pre-swirl System, 6th European Conference of Turbomachinery- Fluid Dynamics and Thermodynamics, 2005, Lille, France

Benim, A.C; Cagan, M.; Bonhoff, B.; Brillert D.:
Simulation of Flow in Pre-Swirl Systems with Emphasis on Rotor-Stator Interface 3rd WSESAS/IASME International conferences on Fluid Mechanics ans Aerodynamics,Corfu Island, WSEAS/IASME international conferences, Greece 2005

⇑ zur Jahresauswahl

 

2004

F.-K. Benra, H. J. Dohmen, O. Schneider.  
Grundlagenuntersuchungen an rotierenden Ringräumen zur Optimierung des Sekundärluftsystems moderner Gasturbinen
VDI-Energietechnik, Fachtagung: Stationäre Gasturbinen, 23. – 24. November 2004, Leverkusen

F.-K. Benra, H. J. Dohmen, M. Sommer:  
Numerische Simulation der zeitabhängigen, räumlichen Strömung in einer Kreiselpumpe mit Einschaufelrad
Δp – Das Pumpenmagazin, Ausgabe 2, Mai 2004, S. 44 – 47

F.-K. Benra, H. J. Dohmen, O. Nowack.  
PIV- und LDV-Messungen im beschaufelten Diffusor einer radialen Kreiselpumpe
GALA-Fachtagung “Lasermethoden in der Strömungsmesstechnik”, 7. – 9. September 2004, Universität Karlsruhe

F.-K. Benra, H. J. Dohmen. 
Messung der strömungsinduzierten Auslenkungen des Rotors einer radialen Abwasserpumpe
6. Tagung Technische Diagnostik, An-Institut Fluid- und Pumpentechnik Merseburg, Merseburg, 21. – 22. Oktober 2004

F.-K. Benra, H. J. Dohmen. 
Flow Induced Rotor Oscillations of a Centrifugal Sewage Water Pump
ISMA2004, Conference on Noise and Vibration Engineering, 2004 September 20 –22, Leuven, Belgium

F.-K. Benra, H. J. Dohmen.
Theoretical and Experimental Investigation on the Flow induced Vibrations of a Centrifugal Pump
IPC 2004, International Pipeline Conference, Calgary, Alberta, Canada, October 4 - 8, 2004, IPC04-0348

F.-K. Benra, H. J. Dohmen, O. Schneider. 
Experimental Investigation of Flow Induced Rotor Oscillations in a Centrifugal Sewage Water Pump
2004 ASME HEAT Transfer/Fluids Engineering Summer Conference, Charlotte, North Carolina, USA, July 11 – 15, 2004, HT_FED2004-56066

F.-K. Benra, H. J. Dohmen, M. Kloda. 
Optimization of a Small 2-Stage Centrifugal Blower by CFD Methods
2004 ASME Heat Transfer/Fluids Engineering Summer Conference, Charlotte, North Carolina, USA, July 11-15, 2004, HT_FED2004-56098

F.-K. Benra, H. J. Dohmen, M. Kloda:  
Theoretical and Experimental Investigation of the Flow Field in a 2-Stage Centrifugal Blower
3rd International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, 21 – 24 June 2004, Cape Town, South Africa, Paper number: BF2

F.-K. Benra, H. J. Dohmen, M. Sommer:  
Flow Induced Vibrations of a Single-Blade Centrifugal Pump
3rd International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, 21 – 24 June 2004, Cape Town, South Africa, Paper number: BF1

F.-K. Benra, M. Sommer, M. Müller, A. Töws.  
Investigation of the Three-Dimensional Time Accurate Flow in a Single-Blade Sewage Water Pump
4th South African Conference on Applied Mechanics, 18 – 21 January 2004, Johannesburg, South Africa, Paper number: 61

F.-K. Benra, H. J. Dohmen, O. Schneider.  
Measurement of Flow Induced Rotor Oscillations in a Single-Blade Centrifugal Pump
 2004 ASME Pressure Vessels and Piping Conference, July 25 – 29, 2004, San Diego, California, USA

O. Schneider, H. J. Dohmen, F.-K. Benra, D. Brillert.  
Dust Separation in a Gas Turbine Pre-Swirl Cooling Air System, A Parameter Variation
ASME TURBO EXPO 2004, 14-17 June, 2004, Vienna, Austria, GT2004-53048

O. Schneider, H. J. Dohmen, F.-K. Benra, D. Brillert:  
Analysis of Dust Separation Inside a Pre-Swirl Cooling Air System
10th International Symposium on Transport, Phenomena and Dynamics of Rotating Machinery, Honolulu, Hawaii, March 07-11, 2004, ISROMAC10-2004-029

F.-K. Benra, H. J. Dohmen, O. Schneider:
Comparison of Calculated and Measured Flow induced Oscillations of Centrifugal Pump Rotors
10th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery, Honolulu, Hawaii, March 07-11, 2004, ISROMAC10-2004-017

⇑ zur Jahresauswahl

2003

F.-K. Benra, H. J. Dohmen, O. Schneider:  
Calculation of Hydrodynamic Forces and Flow Induced Vibrations of Centrifugal Sewage Water Pumps
4th ASME / JSME Joint Fluids Engineering Conference, Honolulu, Hawaii, USA, July 6 – 11, 2003, FEDSM2003-4510, DOI: 10.1115/FEDSM2003-45102,

D. Brillert, F.–K. Benra, H. J. Dohmen, O. Schneider:  
Investigation of Internal Cooling Air Flow of Gas Turbines with Attention to Heat Transfer
4th ASME/JSME Joint Fluids Engineering Conference, Honolulu, Hawaii, USA, July 6 – 11, 2003, FEDSM2003-45106, DOI: 10.1115/FEDSM2003-45106,

O. Schneider, H. J. Dohmen, F.-K. Benra, D. Brillert:  
Experimental and Numerical Analysis of the Flow Structure and Dust Separation Inside a Pre-Swirl Cooling Air System
4th ASME/JSME Joint Fluids Engineering Conference, Honolulu, Hawaii, USA, July 6-11, 2003, FEDSM2003-45096, DOI: 10.1115/FEDSM2003-45096,

D. Brillert, A.V. Mirzamoghadam, H. J. Dohmen, F.-K. Benra, O. Schneider.  
Application of Conjugate CFD to the Internal Cooling Air Flow System of Gas Turbines
ASME Turbo Expo 2003, June 16-19, 2003, Atlanta, Georgia, USA, GT2003-38471, DOI: 10.1115/GT2003-38471,

O. Schneider, H. J. Dohmen, F.-K. Benra, D. Brillert.
Investigations of Dust Separation in the Internal Cooling Air System of Gas Turbines
ASME TURBO EXPO 2003, 16-19 June, 2003, Atlanta, Georgia USA, GT2003-38293, DOI: 10.1115/GT2003-38293,

F.-K. Benra, H. J. Dohmen, O. Schneider:  
Calculation of Flow Induced Vibration Amplitudes of Radial Sewage Water Pumps
Proceedings of the 7th International Symposium on Emerging Technologies for Fluids, Structures and Fluid-Structure Interactions,
ASME Pressure Vessels and Piping Conference, PVP-Vol. 460, Paper PVP2003-1947, Cleveland, USA, July 2003, pp. 45 - 53, DOI: 10.1115/PVP2003-1947,

F.-K. Benra, H. J. Dohmen, O. Schneider. 
Investigation on the Unsteady Flow in Radial Sewage Water Pumps to Determine the Hydrodynamic Forces
Conference Proceedings of the 5th European Conference on Turbomachinery, 17th – 22nd March 2003, Praha, Czech Republic, DOI: 10.1177/0954408911432974,

F.-K. Benra, H. J. Dohmen, O. Schneider. 
Unsteady Flow in Single-Blade Sewage Water Pumps
2nd International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics,23 – 26 June 2003, Victoria Falls, Zambia, Paper number: BF1

F.-K. Benra, P. Köhler, G. Witt. 
Virtuelle Produktentwicklung am Beispiel eines Pumpenlaufrades
Zeitschrift Chemie Ingenieur Technik, Volume 75, Issue 1 - 2, 2003

⇑ zur Jahresauswahl

2002

F.-K. Benra, D. Brillert, H. J. Dohmen, O. Schneider.  
Grundlagenuntersuchungen an rotierenden Ringräumen zur Optimierung des Sekundärluftsystems moderner Gasturbinen
VDI-Bericht Nr.: 1721, Gasturbinen in Praxis und Entwicklung, Leverkusen, November 2002, S. 85 – 94

F.-K. Benra, H. J. Dohmen, O. Schneider. 
Berechnung der Schwingungsamplituden von Abwasserpumpen
5. Tagung Technische Diagnostik, Merseburg, Oktober 2002

F.-K. Benra, H. J. Dohmen, O. Schneider, M. Sommer:
Strömungsgeschwindigkeitsmessung mit der Particle-Image-Velocimetry in einer Kreiselpumpenrückführstufe
Fachtagung Lasermethoden in der Strömungsmesstechnik, Rostock, September 2002, S. 44.1 – 44.6

O. Schneider, H. J. Dohmen, F.-K. Benra, M. Schneider:
Messung von Strömungsgeschwindigkeiten mit der Particle-Image-Velocimetry in einem Gasturbinenrotor
Fachtagung Lasermethoden in der Strömungsmesstechnik, Rostock, September 2002, S. 29.1 – 29.6

F.-K. Benra, H. J. Dohmen: [019]
Strömungsinduzierte Schwingungen von Abwasserpumpen
VDI-Bericht Nr.: 1682, Fluid-Struktur-Wechselwirkung, Wiesloch, Juni 2002, S. 263 – 28

O. Schneider, H. J. Dohmen, A. W. Reichert:
Experimental Analysis of Dust Separation in the Internal Cooling Air System of Gas Turbines
ASME Turbo Expo 2002, GT-2002-30240

⇑ zur Jahresauswahl

2001

F.-K. Benra:
Das Pumpenlaufrad  aus dem Computer
Process, Magazin für Chemie und Pharmatechnik, Nr. 11, S. 42-45, 2001

F.-K. Benra:  
Einfache Gleitringdichtungen für gefährliche Medien?
UMWELT, VDI-Verlag, S. 42-44, 6/2001

F.-K. Benra:
Economic Development of Efficient Centrifugal Pump Impellers by Numerical Methods
World Pumps, The International Journal of Pump Users, Elsevier Advanced Technologiy, Nr. 416, p.48-53, May 2001

F.-K. Benra, P. Köhler, G. Witt:
CAx-Prozesskette für Pumpenlaufräder
VDI-Bericht Nr. 1614, Effiziente 3D-Produktmodellierung – Fortschritte und Fallstricke, 2001, S. 313 – 334

F.-K. Benra, M. Müller:
Untersuchung zur schwingungsoptimierten Gestaltung von Abwasserpumpen
VDI-Berichte 1606, Schwingungen in Maschinen und Anlagen, S. 59-79, 2001

D. Brillert
Strömungsberechnung im Kühl- und Sperrluftsystem von Gasturbinen zur Optimierung des Sekundärluftsystems
Dissertation, Gerhard-Mercator-Universität Duisburg, 2001

D. Brillert, A.W. Reichert, H. Simon:
The Flow Structure in Rotating Hollow Shafts with Radial Inflow and Axial Throughflow
ASME Turbo Expo 2001 - Land, Sea & Air, June 4-7th, 2001, New Orleans, Louisiana, USA

⇑ zur Jahresauswahl

2000

F.-K. Benra:  
Leckraten versagender Gleitringdichungen
Tagung Technische Diagnostik 2000, Merseburg, An-Institut Fluid- und Pumpentechnik, 26. und 27.10.2000

L.J. Lenke, H. Simon:
Aerodynamic Analysis of Return Channels of Multi-Stage Centrifugal Compressors
ASME Paper, International Mechanical Engineering Congress & Exposition of ASME, 5.-11. November 2000, Orlando, Florida, USA

D. Brillert, D. Lieser, A.W. Reichert, H. Simon:
Total Pressure Losses in Rotor Systems with Radial Inflow
ASME Paper Nr. 2000-GT-283, München, 8.-11. Mai 2000

D. Brillert, A.W. Reichert, H. Simon:
Flow Losses in Rotating Passages in Secondary Air Systems of Gas Turbines
ISROMAC-8, 2000, Honolulu, Hawai, USA

⇑ zur Jahresauswahl

1999

F.-K. Benra.
Schwingungsprobleme bei Abwasserpumpen
UMWELT, VDI-Verlag, Nr.10, S. 6-9, 1999

F.-K. Benra.
Trockenlaufschäden und die Folgen
Δp, Das Moderne Pumpenmagazin, Ingenieur-Verlag, Nr. 2, April 1999, S.46-49

L.J. Lenke:
Numerische Simulation der turbulenten Strömung in Rückführkanälen mehrstufiger Radialverdichter
Dissertation, Gerhard-Mercator-Universität Duisburg, 1999

C. Roehl, H. Simon:
Numerical Simulation of Compressible Flows with Adaptive Unstructured Grids
FEDSM99-7260, 3rd ASME/JSME Joint Fluids Engineering Conference, San Francisco, California, USA, July 18-23, 1999

C. Roehl, H. Simon:
Adaptive Unstructured Grids for Simulating Transsonic Flows in Turbomachinery
ASME Paper 99-GT-213, Indianapolis 1999

D. Brillert, A.W. Reichert, H. Simon:   
Calculation of Flow Losses in Rotating Passages of Gas Turbine Cooling Systems
ASME Paper 99-GT-251, 1999

L.J. Lenke, H. Simon:
Numerical Investigations on the Optimum Design of Return Channels of Multi-Stage Centrifugal Compressors
ASME Paper 99-GT-103, 1999

⇑ zur Jahresauswahl

1998

Ch. Röhl:
Adaptive unstrukturierte Netze numerischer Simulation von Strömungsvorgängen in Turbomaschinen
Dissertation, Gerhard-Mercator-Universität - GH Duisburg, 1998

L.J. Lenke, H. Simon:
Numerische Strömungsuntersuchungen in Rückführkanälen mehrstufiger Radialverdichter
VDI Berichte Nr. 1425, 1998

J.-S. Cheong:
Implizite Verfahren zur Untersuchung instationärer Strömungsvorgänge durch Wechselwirkung in axialen Turbomaschinen
Dissertation, Gerhard-Mercator-Universität - Gesamthochschule Duisburg, 1998

L.J. Lenke, H. Simon:
Numerical Simulation of the Flow within return Passages of Centrifugal Compressors
ERCOFTAC Seminar and Workshop on Turbomachinery Flow Prediction VI, 5th-8th January 1998, Aussois, France

D. Brillert, A.W. Reichert, H. Simon:
Cooling Air Flow in a Multi Disc Industrial Gas Turbine Rotor
ASME Paper 98-GT-136

L.J. Lenke, H. Simon:
Numerical Simulation of the Flow through the Return Channel of Multi-Stage Centrifugal Compressors
ASME Paper 98-GT-255, 1998

⇑ zur Jahresauswahl

1997

J.-S. Cheong, H. Simon:
A Numerical Investigation of Unsteady Flow Through an Axial Compressor Stator
Beijing, 1997

J.-S. Cheong, H. J. Dohmen, H. Simon:
Multigrid Method for Unsteady Viscous Flows
ASME Paper, FEDSM 97-3500, Vancouver 1997

A.W. Reichert, D. Brillert, H. Simon:
Loss Prediction for Rotating Passages in Secondary Air Systems
ASME Paper 97-GT-215, 1997

L.J. Lenke, H. Simon:
An Improved Algebraic Reynolds Stress Model for Predicting Separated Flows
Beijing, Proceedings of the 7th International Symposium on Computational Fluid Dynamics, 15.-19. September 1997

L.J. Lenke, H. Simon:
Viscous Flow Field Computations for a Transonic Axial-Flow Compressor Blade using Different Turbulence Models
ASME Paper 97-GT-207, 1997

V. Amedick, H. Simon:
Numerical Simulation of the Flow through the Rotor of a Radial Inflow Turbine
ASME Paper 97-GT-90, 1997

F.-K. Benra: [010]
Energetische Optimierung von Kreiselpumpen für den Abwassertransport
Forum für Umweltforschung, Heft 1, Gerhard-Mercator-Universität Duisburg, 1997

⇑ zur Jahresauswahl

1996

F.-K. Benra:  
Vorhersage des Schwingungsverhaltens von Abwasserpumpen
VDI-Schwingungstagung, VDI-Bericht 1285, S. 311-325, 1996

F.-K. Benra:  
Neue Entwicklungen bei Abwasserpumpen
UMWELT, VDI-Verlag, Nr. 10, S. 10-13, 1996

F.-K. Benra: [007]
Über das Schwingungsverhalten radialer Kreiselpumpen für Abwasser
Beitrag B6-2, Karlsruher Pumpentagung, September 1996

F.-K. Benra:
Pumpen in der Abwasserwirtschaft
UMWELT, VDI-Verlag, Nr. 5, S. 12-19, 1996

J.-S. Cheong, H. J. Dohmen, H. Simon:
A comparison of different solution Procedures for compressible viscous flows
Finite Volumes for Complex Applications, Hermes, 1996, ISBN 2-86601-556-8

V. Amedick, H. Simon:
Numerical Simulation of the Three Dimensional Turbulent Flow in a Turbine Rotor with Conical Walls
6th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC-6), Rotating Machinery 1996, Vol. II, Honolulu, Hawaii, USA, 1996

C. Röhl, H. Simon:
Flow Simulations in Aerodynamically highly loades Turbomachines using Unstructured Adaptive Grids
Notes on Numerical Fluid Mechanics, Vol. 52, pp. 446-460, 1996

⇑ zur Jahresauswahl

1995

C. Röhl, H. Simon:
Simulations of Transonic Flows in Turbomachines Using a Novel Adaptation Method with Unstructured Grids
6th International Symposium on Computational Fluid Dynamics (6 ISCFD), Lake Tahoe, Nevada, USA, 1995

L. Lenke, H. Simon:
Viscous-Flow Field Calculations for Turbine Cascades using different Turbulence Models
9th International Conference on Numerical Methods in Laminar and Turbulent Flow, Atlanta, USA 1995

L. Lenke, A.W. Reichert, H. Simon:
Comparison of viscous flow field calculations applicable to turbomachinery design with experimental measurements
Seventh International Conference on Computational Methods and Experimental Measurements, CMEM 95-16-18 Mai 1995, Capri, Italien

L. Lenke, A.W. Reichert, H. Simon:
Viscous Flow Field Calculations for the VKI-1 Turbine Cascade using different Turbulence Models
ASME-Gas Turbine and Aeroengine Congress, Houston, Texas (1995), Paper-No. 95-GT-91

A.W. Reichert, H. Simon:
Design and Flow Field Calculations for Transonic and Supersonic Radial Inflow Turbine Guide Vanes
ASME-Gas Turbine and Aeroengine Congress, Houston, Texas 1995, Paper-No. 95-GT-97

⇑ zur Jahresauswahl

1994

A.W. Reichert:
Strömungssimulationen zur optimalen Gestaltung von Turbomaschinenkomponenten
Dissertation, Gerhard-Mercator-Universität - GH Duisburg, 1994, Deutsche Hochschulschriften 1047, Verlag, Hänsel-Hohenhausen, Engelsbach, ISBN 3-8267-1047-9

A.W. Reichert, H. Simon:
Numerical Investigations to the Optimum Design of Radial Inflow Turbine Guide Vanes
ASME-Gas Turbine and Aeroengine Congress den Haag, 1994, Paper-No. 94-GT-61

A.W. Reichert, H. Simon:
Beitrag zur Optimierung hochbelasteter Zentripetalturbinen
VDI-GET Fachtagung "Thermische Strömungsmaschinen", Aachen 1994 VDI Berichte 1109, 1994, pp. 191-208

⇑ zur Jahresauswahl

1993

K. J. Bauermeister, H. J. Dohmen, H. Simon:
Numerical Investigations on the Effect of Swirling Combuster Exit Flow on HP--Turbine Inlet Flow for the Industrial gas Turbine THM 1304
ASME Gas Turbine Conference, Cincinnati, Ohio, 1993, Paper-No. 93-GT-256

⇑ zur Jahresauswahl

1992

H. J. Dohmen, U. Kahlsdorf, H. Simon:
Simulation of the Three--Dimensional Viscous Flow in the Passage Towards the HP-Turbine of an Industrial Gas Turbine
Proceedings of the 1992 FIDAP User Conference, FDI Inc., 1992

F.-K. Benra:
Förderung von Schmutz- bzw. Abwasser mit verstopfungsfreien Kreiselpumpen
Vortrag Universität-GH-Duisburg, 1992

F.-K. Benra:
Berechnung und Konstruktion einer Kreiselpumpenbaureihe für die Förderung von Schmutz- und Rohabwasser
Vortrag FH Dortmund, 1992

F.-K. Benra.
Abwassertransport mit kompakten, verstopfungsfreien Kreiselpumpen
Wasser, Luft und Boden, 9/1992, S.26 - 31

⇑ zur Jahresauswahl

1991

Janssen M.; Dohmen H. J.; Grahl K. G.:
Computation of 3D Flow Phenomena in Axial Flow Compressor Blade Rows
American Society of Mechanical Engineers 1991 – ASME 1991 International Gas Turbine, V001T01A026, DOI: 10.1115/91-GT-078

⇑ zur Jahresauswahl

1990

F.-K. Benra:
Strömungstechnische Untersuchungen an Kreiselpumpen mit Spiral- und T-Spiralrotoren
Interner bericht, Paul Pleiger Maschinenfabrik GmbH & Co. KG, 1990

Dohmen H. J.; Janssen M.; Grahl K.G.::
The Calculation of Three-Dimensional Parabolic Flows With Arbitrary Boundary Geometries
International Chemical Engineering, Vol-30, 1990

⇑ zur Jahresauswahl

1987

Dohmen H. J.; Janssen M.; Grahl K. G.:
Ein Beitrag zur Berechnung dreidimensionaler parabolischer Strömungen in beliebig berandeten Geometrien. In: Forsch Ing-Wes 53(4), 1987,  S. 125–136. DOI: 10.1007/BF02558729.

R.A. Strub, H. Simon et al:
Influence of the Reynolds Number on the Performance of Centrifugal Compressors
ASME-Gas Turbine Conference, Anaheim, California, 1987, Paper-No. 87-GT-10 and in the Transactions of the ASME-Journal of Turbomachinery, October 1987

H. Simon:
Design Concept and Performance of a Multistage Integrally Geared Centrifugal Compressor Series for Maximum Efficiencies and Operating Ranges
ASME-Gas Turbine Conference, Anaheim, California, 1987, Paper-No. 87-GT-43

⇑ zur Jahresauswahl

1986

H. Simon, T. Wallmann, T. Mönk:
Improvements in Performance Characteristics of Single-Stage and Multi-Stage Centrifugal Compressors by Simultaneous Adjustments of Inlet Guide Vanes and Diffuser Vanes
ASME-Gas Turbine Conference, Düsseldorf, 1986, Paper-No. 86-GT-127 and in the Transactions of the ASME-Journal of Turbomachinery, January 1987

F.-K. Benra:  
Beitrag zur Berechnung der Strömung in mehrstufigen Axialverdichtern unter besonderer Berücksichtigung der Seitenwandgrenzschichten und der Sekundärströmungen
Dissertation, Universität-GH-Duisburg, 1986

H. Simon:
Systematic Approach to Modern Machinery Design and Plant Equipment
Symposium on Turbocompressors, People's Republic of China, Shenyang, May 1986

H. Simon:
Integrally Geared Centrifugal Compressors, Aero-Thermodynamic Concept and Development of Components
Symposium on Turbocompressors, People's Republic of China, Shenyang, May 1986

⇑ zur Jahresauswahl

1985

H. Simon:
Entwicklungsarbeiten für mehrstufige Getriebeturboverdichter
Turboverdichter-Symposium, Moskau, Oktober 1985

F.-K. Benra.
Beitrag zur Berechnung der reibungsbehafteten Strömung in mehrstufigen Axialverdichtern
VDI-Berichte 572.1, VDI-GET, 1985

H. Simon:
Über die Entwicklung und Erprobung von Turboverdichtern am Beispiel von Prototypentwicklungen:
- Turboverdichter für sehr hohes Druckniveau (p_{max.} = 900\,bar)
- Hochdruck-Sauerstoff-Turboverdichter} (p_{max.} = 135\,bar)
Turboverdichter-Symposium, Moskau, Oktober 1985

⇑ zur Jahresauswahl

1984

R.A. Strub, H. Simon et al:
Influence of the Reynolds Number on the Performance of Centrifugal Compressors
International Compressed Air and Allied Machinery Commitee (ICAAMC), Zürich, June 1984

H. Simon, A. Bülskämper
On the Evaluation of Reynolds Number and Relative Surface Roughness Effects on Centrifugal Compressor Performance Based on Systematic Experimental Investigations
ASME-Gas Turbine Conference, Phoenix, 1983 Paper-No. 83-GT-118 and in the Transactions of the ASME-Journal of Engineering for Gas Turbines and Power, April 1984

⇑ zur Jahresauswahl

1983

F.-K. Benra, R. Foitzik, K.-G. Grahl:
Variable Gittergeometrie in vielstufigen Axialverdichtern
VDI-Berichte Nr. 487, 1983

H. Simon, E. Rothstein:
On the Development of Return Passages of Multi-Stage Centrifugal Compressors
ASME-Applied Mechanics, Bioengineering and Fluids Engineering Conference, Houston, Texas, June 1983, FED-Vol. 3

⇑ zur Jahresauswahl

1982

F.-K. Benra, R. Foitzik, K.-G. Grahl.l:
Theoretische Untersuchung zur optimalen Verstellung der Geometrie von Verzögerungsgittern
Fortschrittsberichte VDI-Reihe 7, Nr. 65, 1982

⇑ zur Jahresauswahl

1977

H. Simon:
Entwicklung einer Standard--Laufradreihe mit räumlich verwundenen, rückwärtsgekrümmten Schaufeln für stationäre Radialverdichter
VDI-Z 119, Nr. 1/2, 1977

⇑ zur Jahresauswahl

1976

B. Dittie, J. Schubert, H. Simon:
Ein Beitrag zur Kennfeldoptimierung mehrstufiger Axialverdichter bezüglich Wirkungsgrad und Regelbereich
VDI-Tagung “Thermische Strömungsmaschinen'', Düsseldorf, 1976, VDI-Berichte Nr. 264

J. Schubert, H. Simon:
Wirkungsgradterm zur Beurteilung mehrstufiger Radialverdichter
Brennstoff--Wärme--Kraft (BWK), Düsseldorf, 1976

⇑ zur Jahresauswahl

1975

D. Bohn, H. Simon:
Mehrparametrige Approximation der Eichräume und Eichflächen von Unterschall- bzw. Überschall-5-Loch-Sonden
ATM + Meßtechnische Praxis, München, Heft 3, 1975

⇑ zur Jahresauswahl

1974

H. Simon:
IV. Theoretische und experimentelle Untersuchungen an einer neuartigen Überschallverdichterstufe mit ``querschnittstabilisiertem Verdichtungsstoß im Laufrad''
TR Nr. 28, 1974

H. Simon:
III. Experimentelle Untersuchung eines überschalldurchströmten Axialverdichterlaufrades und Vergleich mit den Auslegungsergebnissen
TR Nr. 24, 1974

H. Simon:
II. Auslegung eines überschalldurchströmten Axialverdichter-Laufrades
TR Nr. 21, 1974

H. Simon:
I. Betrachtungen zur Auslegung von Überschallverdichterstufen verschiedener Typen:
(1) Überschallaufrad - Stoß im Leitrad
(2) Stoß im Laufrad (querschnittstabilisiert) - Stoß im Leitrad
TR Nr. 16, 1974

H. Simon, D. Bohn:
Theoretische und experimentelle Untersuchungen zur Entwicklung einer Überschallverdichterstufe
Forschungsbericht aus der Wehrtechnik / Luft- und Raumfahrt, Bundesministerium der Verteidigung, Dokumentationszentrum der Bundeswehr, Bonn, 1974, BMVg -- FBWT 74-5
Aufsatz in 4 Teilen zum Thema “Entwicklungsarbeiten an Überschallaxialverdichterstufen”, Technische Rundschau, Bern, 66. Jahrgang, 1974

H. Simon, D. Bohn:
A Comparison of Theoretical and Experimental Investigations of Two Different Axial Supersonic Compressors
The Royal Aeronautical Society, London, 2nd International Symposium on Air Breathing Engines, Sheffield, 1974

H. Simon, D. Bohn:
Experimental Investigations of a Recently Developed Supersonic Compressor Stage (Rotor and Stage Performance)
ASME-Gas Turbine Conference, Zürich, 1974, Paper-No. 74-GT-116

H. Simon, D. Bohn:
Experimental Investigations of a Recently Developed Supersonic Compressor Stage (Rotor and Stage Performance)
ASME-Gas Turbine Conference, Zürich, 1974, Paper-No. 74-GT-116

⇑ zur Jahresauswahl

1973

W. Dettmering, H.E. Gallus, H. Simon, D. Bohn, G.P. Kreutzer:
Untersuchungen an Überschallverdichter - Laufrädern und -stufen
Jahresberichte 1971/72 und Abschlußbericht 1973 des Sonderforschungsbereiches 83 ``Strömungsmechanik und Thermogasdynamik'' RWTH Aachen

H. Simon:
A Contribution to the Theoretical and Experimental Examination of the Flow Through Plane Supersonic Deceleration Cascades and Supersonic Compressor Rotors
ASME-Gas Turbine Conference, Washington, 1973 Paper-No. 73-GT-17 and in the Transactions of the ASME-Journal of Engineering for Power, July 1973

D. Bohn, H. Simon:
Überschallströmungen - schlierenoptisch beobachtet
Technische Rundschau, Bern, 65. Jahrgang, Nr. 2, 1973

D. Bohn, H. Simon:
Anwendung des Schlierenverfahrens zur Beobachtung der Durchströmung ebener und rotationssymmetrischer Überschallverzögerungsgitter und der Umströmung von 5-Loch-Kegelsonden
Vortrag zur Sitzung des DGLR-Fachausschusses ``Versuchswesen der Strömungsmechanik'' am 23./25. Okt. 1972 in Friedrichshafen DLR-Mitteilung 73-20, Teil 1, 1973, S. 45/62

⇑ zur Jahresauswahl

1972

B. Becker, H. Simon:
Überschallströmung durch feststehende und rotierende Schaufelgitter
Zeitschrift für Flugwissenschaften 20, Heft 1/2, 1972

⇑ zur Jahresauswahl

Stellenausschreibungen / Open positions
keine / none

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