249 振動弾性板流れ発生機に関する研究(2) : 振動板周りの流況(S41-2 移動境界・連成(2),S41 移動境界・連成・振動と騒音問題)  [in Japanese] 249 Visualized Flow Conditions Around a Vibrating-Plate Flow-Generator  [in Japanese]

Flow structures around a Vibrating Elastic Plate Flow Generator (VEPFG) were investigated by flow visualization. Alternate trailing vortices and side-edge vortices were observed to occur. Tuft grid images obtained were compared with contour lines of time-averaged total pressure distributions downstream of the plate, which has made clear the vortical structure of the induced flow. Flow above the plate surfaces was found to be dominated by reduced frequencies.