Description
Areas of application
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Edge zone effects: Investigation of aerodynamic phenomena in boundary zones
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Transition: Analysis of transition phenomena under various perturbations
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Aeroelasticity: Basic research on blade vibrations and aeroelastic instabilities
Technical setup and operation
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Cooling: Temperature control of the inlet conditions using an intercooler
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Blade geometry: Low blade thickness-to-blade height ratio to optimize aeroelastic investigations
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Excitation: Blade vibration excitation using piezoelectric actuators
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Acquisition: Vibration measurement using strain gauges and tip timing systems
Measurement technology
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Pressure and temperature measurement: Steady and unsteady, with type K and PT100 sensors
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Traversing: Radial traversing with multi-hole flow vector probes for rotor and stator stages
- Flow analysis: CTA/CCA probes for velocity and turbulence measurement
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Surface measurement: Hot film array for recording wall shear stress
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Vibration monitoring: Acceleration sensors, strain gauges and tip timing systems
Specifications
| Output power | 450 kW |
| Rotational speed | 3.000 1/min |
| Mass flow | 16,5 kg/s |
| Total pressure ratio | 1,08 |
| No. Stages | 2 |
| Hub ratio | 0,63 |
| Thickness-span ratio | 0.064 (Hub), 0.043 (Blade tip) |
| Axial velocity in meridian plane | 55,5 m/s |
