2416 軸流圧縮機動翼列における旋回失速の三次元流れメカニズム(S41-2 流体機械に関連した複雑内部流動の解析と計測(失速・はく離・翼列干渉),S41 流体機械に関連した複雑内部流動の解析と計測)  [in Japanese] 2416 Three Dimensional Flow Mechanism of Rotating Stall in an Axial Flow Compressor  [in Japanese]

Recently, it has been clarified that unsteady vortical flow field at rotating stall in an axial flow compressor rotor is subject to tornado-type separation vortex linking from the rotor blade suction surface to the casing wall by experimental fluid dynamics and computational fluid dynamics. With the growth of rotating stall, the tornado-type separation vortex rolls up to ahead of the rotor and the vortex leg moves to the midspan from the tip on the blade. Based on these features, the flow mechanism of rotating stall is explained by the three-dimensional separation vortex structure and its interaction with the casing wall and the blade surface.