遠心圧縮機用羽付ディフューザの性能に関する研究 : 第3報:超音速型ディフューザ

概要

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In this report, the performance of supersonic diffuser was investigated, as part of the study about the performance on vaned diffusers for centrifugal compressors. In the supersonic diffuser, not only non-uniform distribution of the flow at impeller exit, but also shock loss generated by a shock wave deteriorates the performance of the diffuser. This report shows the results of experiment and unsteady fluid analysis carried out with a high speed single stage centrifugal compressor having a supersonic flow condition at impeller exit. The experiment was carried out to confirm the performance properties of supersonic diffuser. And the unsteady fluid analysis was carried out by using a Non Linear Harmonic method in order to understand the flow condition in the diffuser, focusing attention on a generation of shock wave particularly.
2013-11-20