IGTC-124 BLADE VIBRATION ON RADIAL IMPELLERS EXCITED BY ROTATING STALL-CELLS AND DURING SURGE(Session C-12 Vibration and Dynamics II)
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概要
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Blade vibration measurements have been carried out on a high pressure, high mass-flow centrifugal compressor to obtain information about the excitation mechanism. For the experimental investigation semiconductor strain gages and a multichannel telemetry transmission system were used. The stress calculation for the vibrating blade by means of the FE-method enabled the choice of the measuring-points on the blade. A wide research program was started with blade vibration measurements in different operating ranges of the compressor and with different types of diffusers. Special emphasis was laid on the investigation of dangerous blade excitation by the cells of rotating stall which could be observed in the speed range of n=16.000rpm. The blade vibration stresses during surge were analysed considering the flow behavior in this instationary operating zone at a rotational speed of n=14.000rpm and for the compressor without and with a vaned diffuser.
- 社団法人日本ガスタービン学会の論文
著者
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Haupt U.
Institute of Turbomachinery, University of Hannover
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Rautenberg M.
Institute of Turbomachinery, University of Hannover
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Haupt U.
Institute For Turbomachinery University Of Hannover
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Rautenberg M.
Institut For Turbomachinery University Of Hannover
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Rautenberg M.
Institute For Turbomachinery University Of Hannover
関連論文
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- IGTC-18 Origin of the Vorticity of the Rotating Stall Cell of Centrifugal Compressors : Part I: Experimental Investigation of the Nature of the Reverse Flow(Session A-7 CENTRIFUGAL COMPRESSOR II)
- IGTC-91 The Rossby Waves of Rotating Stall in Impellers : Part I: Theoretical Background of the Rossby Waves in Blade Channels(Organized Session I ROTATING STALL AND SURGE IN COMPRESSORS)
- IGTC-91 On the Mechanism of Blade Excitation due to Surge on Centrifugal Compressors(Session C-6 STRENGTH AND VIBRATION)
- IGTC-23 On the Nature of Rotating Stall in Centrifugal Compressors with Vaned Diffusers : Part II: Karman Vortices as the Controlling Mechanism(Session A-7 UNSTEADY AERODYNAMICS I)
- IGTC-22 On the Nature of Rotating Stall in Centrifugal Compressors with Vaned Diffusers : Part I: Detection of Reverse Flow(Session A-7 UNSTEADY AERODYNAMICS I)
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