4116 線形剪断流中に置かれた角柱の周囲流れのPIV解析(G05-10 複雑流の光学的可視化計測,G05 流体工学)  [in Japanese] 4116 PIV measurement on the flow around rectangular cylinders in simple shear flow  [in Japanese]

Simple shear flow was generated by using a multi-fan type wind tunnel. With the shear parameter β ranging 0.0275-0.11, the effect of simple shear on the flow around rectangular cylinders was investigated. The depth-to-height ratio was varied in a range of d/h=0.2-3.0. The flow was visualized using the same wind tunnel. We also carried out PIV mesurements in a water tank. For the case of d/h≥2.0 with β=0.092, the time-averaged reattachment of separeted shear layer occurred on the high-speed side.