Ausstattung – Equipment

Stator Components

  • rapid manufacturing / selective laser sintering (SLS)
    • stator geometries for different flow coefficients (𝝋 = 0.12)
    • low cost and time efficient testing
  • Mach numbers up to Ma ≤ 0.8 at diffusor inlet
  • Reynolds numbers up to Re ≈ 5.5∙10⁵
  • separate generation of steady and unsteady inlet flow characteristics
  • five hole probes with thermocouple
  • steady state and time-resolved wall-bounded pressure measurements
  • hot wire probes for measuring turbulent statistics (< 200 kHz)

Measurement Equipment

Hot Wire AnemometryHot Wire Anemometry

  • measurement systems:
    • Dantec Dynamics – StreamlinePro
    • TSI – IFA 300
  • data acquisition system:
    • HBM QuantumX 410B ( 200 kS/s)
  • probe calibrator:
    • modified and automated TSI 1127 (Ma 0.95)

 

 

Probe Traversing DeviceProbe Traversing Device

  • translational and rotational motion
  • variable translation travel
  • step control with micro switches
  • step resolution
    • minimal translation step size:   5 µm
    • minimal rotational step size:     0.07 °
  • electrical isolation through FDM* manufactured clamping fixture

 

Rotating Cavity

Rotating disk in cylindrical cavity for aerodynamics and acoustics measurements

  • different working fluids, pre-mix vessel
  • different disks with different shapes and surface roughness
  • non-dimensional axial gap width down to G = 0.0125
  • circumferential Reynolds numbers up to Re =1.2∙10⁸ (CO2)
  • circumferential Mach numbers up to Ma = 0.75 (CO2)

Investigation of acoustic modes and disk vibration as means of studying rotor-stator interaction in a simplified radial compressor model

  • two loudspeakers as excitation source capable to excite acoustic and structural modes of the gas and disk, respectively

Measurement Equipment

  • pressure and temperature sensors in front and back cavity
  • strain gauges and pressure sensors on disk
  • rotatable pressure sensor (for mode identification)
  • hot wire anemometry

Dry Gas Seals

  • design operating condition: 18,000 rpm, 100 bar
  • overhung configuration with rigid couplings
    • reduced turnaround time
    • direct access to test seals and sensors
  • film thickness (0 – 50 µm)  and static pressure (≤ 110 bar) measurements in the running gap

Measurement Equipment

  • high frequency pressure measurements with ultraminiature pressure probes (≤ 100 kHz)
  • proximity sensors for measuring the film thickness and the displacement of the parts
  • fast response surface thermocouples for the ring temperature

EMMA

Experimental Multi-phase Measurement Application

  • maximum steam massflow = 55 kg/h
  • connection for external steam generator for possible steam massflow increase
  • maximum absolute steam pressure = 5 bar
  • maximum superheated steam temperature = 300 °C
  • cooling capacity of 10kW for wallsubcooling to induce condensation
  • 8-zone controllable heating system for wallsuperheating to induce evaporation
  • preheated liquid water injection for wet steam generation
  • modular measurement section for variation of wall geometries
  • optical access to the measurement section
  • resolvable liquid film thickness range = 1 µm – 3000 µm

Measurement Equipment

  • ​heat transfer coefficient (HTC) measurement systems for condensation and evaporation
  • infrared-interferometric filmthickness measurement system
  • chromatic-confocal filmthickness measurement system
  • extinction measurement system for determination of wet steam density

Messkammer_beschriftet

Four-Stage Axial Compressor

  • Four-stage axial compressor
  • investigation of wet compression and interstage injection
  • pressure ratio: 1.9
  • mass flow: 15 kg/s
  • power at shaft: 980 kW (Driven by two DC-engines and tandem gear box)
  • injection of highly pressurized water (up to 200 bar)
    • in front of the compressor
    • behind stator 1 (SLM manufactured stator, containing internal conduits to supply twin jet nozzles with water)
  • adjustable IGV and stator blades
  • droplet measurements via nonintrusive LDA/PDPA-system

Measurement Equipment

  • torque and rotational speed at shaft
  • inlet mass flow rate
  • steady state pressures in front/behind every stage
  • thermocouples in front/behind every stage
  • bearing oscillations (proximity sensors)
  • five hole probe with thermocouple in between stator and rotor
     
  • Four-Stage Axial Compressor Equipment 2non-intrusive PDPA (Phase doppler particle analysis)
    spray characterization in superposed flows via light scattering mechanism
    measurement of droplet diameters and velocities
    • Argon-Ionen-Laser
    • transceiver-probe: TSI-TR260 (2D-LDA)
      • wavelenghts: 488 nm and 514.4 nm
      • focal lenghts: 512, 350 mm
    • receiver-probe: TSI-RV2100 Receiver (2D-PDPA)
      • focal length: 500 mm
      • backward and front scattering (e.g. off-angle: 150, 30 degree)
    • traversing in x,y,z,φ-coordinates

STEVE - Steam turbine control valve I

Steam Turbine Experimental Valve Enhancement

  • investigation of fluid-structure-interaction in a single control valve
  • modular design
    • interchangeable diffusor-geometry
    • complete interchangeable inner geometry
  • mach similarity to full scale ensured
  • pressure ratios
  • first test rig with full vibrational similarity due to
    • material selection
    • operating conditions

Measurement Equipment

  • highly dynamic universal data acquisition system:
    • HBM QuantumX 410B (≤ 200 kS/s), 20-channels
  • high frequency displacement measurements with Eddy current proximity sensors (≤ 125 kHz)
  • high frequency pressure measurements with ultra-miniature pressure sensors (17 bar, nat. frequency 550 kHz)
  • high frequency piezo electric force measurements (1 kN, 10 kHz)

GÖRLI - Steam turbine control valve II

cooperation with Siemens location in Görlitz

  • investigating of fluid-structure-interaction
  • investigating interaction between two control valves
  • modular design
    • interchangeable diffusor-geometry
    • complete interchangeable inner geometry
  • mach similarity to full scale ensured
  • full vibrational similarity due to
    • material selection
    • operating conditions

Measurement equipment

  • highly dynamic universal data acquisition system:
    • HBM QuantumX 410B (≤ 200 kS/s, 20-channels)
    • HBM QuantumX 840B (≤ 40 kS/s, 8-channels)
  • high frequency strain measurements on valve plug with miniature strain gauges
  • high frequency pressure measurements with ultra-miniature pressure sensors (17 bar, nat. frequency 550 kHz)
  • high frequency piezo electric force measurements (1 kN, 10 kHz)
  • high frequency displacement measurements with Laser proximity sensors (110-190 mm, 392 kHz)