2419 遷音速遠心圧縮機内部流れのPIV計測と数値解析(S41-3 流体機械に関連した複雑内部流動の解析と計測(計測・CFD),S41 流体機械に関連した複雑内部流動の解析と計測)  [in Japanese] 2419 PIV Measurement and CFD Analysis of an Internal Flow of a Transonic Centrifugal Compressor  [in Japanese]

For a high-pressure-ratio centrifugal compressor, the behavior of shock waves should be clarified to improve its performance. In the present paper, the flow including shock waves at the inducer of impeller is simulated using a commercial CFD code. Regarding the relative flow Mach number contours at the inducer, the flow structure including shock waves is discussed. And the results are compared with the experimental results by PIV. And it is shown that the agreement is fair.