アクチュエータディスク法による超音速翼列流れの安定解析(流体工学, 流体機械)

概要

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This paper presents the results of a two-dimensional stability analysis on supersonic flow relative to a cascade, using actuator disk methods. The results show the possibility of existence of two types of destabilizing mode in the supersonic cascade flow. One mode corresponds to conventional rotating stall in subsonic cascade flows. This mode can be unstable both in subsonic and supersonic regions, and its propagation velocity ratio is smaller than unity. The other mode is a newly found mode unique to supersonic cascade flows. This mode can become unstable only in the supersonic region, and its propagation velocity ratio is in most cases larger than unity. Both modes become unstable due to the positive slope of the characteristic curves produced by flow compressibility as in the case of, for example, a shock wave.
一般社団法人日本機械学会の論文
1997-08-25