Development of numerical and experimental methods to determine fluid flow and fluid-structure-interaction

1. Seakeeping and Wave Loads Acting on Offshore Structures

Dipl.-Ing. Jan Oberhagemann, Prof. Dr.-Ing. Bettar Ould el Moctar Risk-based assessment of seaway-induced dynamic loads of ship structures

Load assumptions in class society rules are partly founded on empirical experience and quasi-static load application. This may cause big uncertainties for the structural dimensioning of new and/or unconventional designs.


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Dipl.-Ing. Jens Ley, M.Eng. Mahdi Ghesmi, Lahbib Zentari MEng. , Prof. Dr.-Ing. Bettar Ould el Moctar Accessibility of sea ports. (BiWi)

Accessibility of sea ports without inland waterway connection exemplified by the Jade-Weser Port Wilhelmshaven


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2. Fluid-structure-interaction (FSI)

M.Eng. Malte Riesner, Prof. Dr.-Ing. Bettar Ould el Moctar Development of a nonlinear hydroelastic model for the simulation of springing loads of higher order based on potential flow

The aim of this project is to further develop a three dimensional boundary element method based on Rankine sources to predict sectional loads acting on ship structures in waves taking into account springing induced hydroelasticity effects.

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Dipl.-Ing. Jens Ley, Prof. Dr.-Ing. Bettar Ould el Moctar Assessment of loads and the structural behaviour of ships in severe seaways

Even in times of modern shipbuilding total losses of ships occur as a result of global structural failure. Possible reasons vary and, frequently, the reasons cannot be clearly identified. However, extreme sea loads are often the reason for such losses.


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3. Fluid Motions in Partially Filled Tanks (Sloshing)

M.Sc. Robert Potthoff, Prof. Dr.-Ing. Bettar Ould el Moctar Investigation of Sloshing in partially filled tanks considering density ratio and phase transition effects

The main objective of this project is to carry out a dedicated experimental investigation of the influence of phase transition and density ratio between gas and liquid phases on sloshing and sloshing induced loads.

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Dipl.-Ing. Jens Neugebauer, Prof. Dr.-Ing. Bettar Ould el Moctar Commercial Sloshing Investigations

The University of Duisburg-Essen owns a modern, State-of-the-Art sloshing test facility. The facility is comprised of the following systems:








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Dipl.-Ing. Jens Neugebauer, Prof. Dr.-Ing. Bettar Ould el Moctar The Particle-Image-Velocity-System of the ISMT

The ISMT operates a stereoscopic Particle-Image-Velocimetry System (PIV-System) for the non-intrusive measurement of velocities in three components within a measurement plane.


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4. Manoeuvring of ships

Prof. Dr.-Ing. Bettar Ould el Moctar, Dr.-Ing. Jens Neugebauer, M.Sc. Robert Potthoff, Sebastian Sigmund M. Eng., Felix Roettig M. Sc. Energy Efficient Safe Ship Operation


Since 1 January 2013, new ships have to fulfil the requirements of the Energy Efficiency Design Index (EEDI).

However, when complying with the EEDI, doubts remain as to a sufficient rating of propulsive and steering powers to guarantee the necessary manoeuvrability in unfavourable conditions.

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Dipl.-Ing. Matthias Tenzer, Prof. Dr.-Ing. Bettar Ould el Moctar Numerical calculation of ship-propeller-rudder-interaction during manoeuvring of inland waterway vessels in shallow water

The use of ship handling simulators in the field of inland waterway transport has increased rapidly in recent years. For more precise studies, e.g. vessel dynamics in off-design conditions, various improvements of the mathematical models in use for the description of the manoeuvring behaviour are necessary. Nowadays, the rudder forces in a modular mathematical model are determined on the basis of the two-dimensional calculation of lift and drag due to the flow around a hydrofoil.


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Dipl.-Ing. Dennis Harlacher, Prof. Dr.-Ing. Bettar Ould el Moctar Hydrodynamic and ship dynamic modelling for trafficability analysis of inland waterways

Within the scope of the cooperation agreement between the Institute of Ship Technology, Ocean Engineering and Transport Systems (ISMT) and the Federal Waterways Engineering and Research Institute (BAW) in Karlsruhe, a common enhancement on the basis of Inland Electronic Chart Display and Information System (Inland ECDIS) is planned for the assessment of inland waterways.


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M.Sc. Philipp Mucha, Prof. Dr.-Ing. Bettar Ould el Moctar Prediction of ship manoeuvring in restricted waters

Ship pilots and researchers have long witnessed that manoeuvring in restricted waters holds special challenges for ship handling and the modelling of ship flows. Interaction effects between passing and overtaking ships as well as ships and banks are known to have a powerful impact on course keeping.


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Dipl.-Ing. Jens Höpken, Prof. Dr.-Ing. Bettar Ould el Moctar PREMAN – Scale effects and environmental conditions in connection with the prediction of the manoeuvring behaviour of sea-going ships: Sub-project MANÖ-DYN :

Assuring a ship's manoeuvrability is one of the most fundamental requirements for a safe and economic vessel operation. Considering the growth in overall shipping and demand for larger ships, the necessity of predicting the vessel's manoeuvrability more precisely arises. The combined research project PREMAN is devoted to improving the prediction methods for ship manoeuvrability significantly.


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5. Numerical and Experimental Investigation of Cavitation and Cavitation Erosion

Andreas Peters (M.Sc.), Prof. Dr.-Ing. Bettar Ould el Moctar Development of a Numerical Method to Predict Hydrodynamic Cavitation Induced Erosion

The aim of this project is the development of a reliable numerical method for the assessment of hydrodynamic cavitation induced erosion. An Euler-Euler method, as well as an Euler-Lagrange method will be extended by additional terms and equations for bubble dynamics.

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Dr. Udo Lantermann, Andreas Peters (M.Sc.), Prof. Dr.-Ing. Bettar Ould el Moctar KonKav III – Development of numerical and experimental methods to predict erosion at appendages, caused by cavitation:

Sub-project “Development of numerical methods for the calculation of erosion due to cavitation”

In ship technology, cavitation is an unwanted occurrence. Each time the local pressure drops below the steam pressure of the water, cavitation occurs.


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6. Resistance and Propulsion of Ships

M.Sc. Malte Riesner, Prof. Dr.-Ing. Bettar Ould el Moctar PerSee - Performance of ships in seaways; development of numerical methods to determine the power requirement of ships in seaways: Sub-project NumSee

The project „PerSee“ comprehensively deals with the seakeeping behaviour of ships in moderate and heavy seas. One of the goals is to determine the required engine power for expected operating conditions instead of calm water.


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7. Marine power plants

Dipl.-Ing. Klemens Hitzbleck, Friederike Dahlke (M.Sc.), Michael Radisch (B.Sc.), Prof. Dr.-Ing. Bettar Ould el Moctar BinGas – Development of technologies for the transport of LNG on inland navigation vessels: tank – propulsion - ship

The joint project “BinGas” deals with the development of technologies for the transport of LNG on inland navigation vessels. Eleven private-industry and research partners are involved.


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Dipl.-Ing. Klemens Hitzbleck, Prof. Dr.-Ing. Bettar Ould el Moctar LNG Masterplan for Rhine-Main-Danube

The main objective of the global project under the leadership of Pro Danube Management GmbH is to prepare and launch the full-scale deployment of LNG as an environmentally-friendly and efficient fuel, thereby making an initial but important contribution to initiating the implementation of LNG in the inland navigation sector.

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