壁面パルスジェット内に生成された縦渦の流動機構 : 第2報,複孔パルスジェットの干渉

抄録

A Vortex Generator Jet (VGJ) in a turbulent boundary layer has been investigated, since it has a significant potential for the active control of boundary layer stall. This paper describes the double VGJs under pulsed injection which generate periodic longitudinal vortices in the boundary layer. Phase-averaged wall shear stress was measured by a wall flow sensor with a high response. The important flow parameters of double jets are their arrangement and phase difference of injection. In common flow down arrangement with common phase, phase-averaged wall shear stress has a higher peak at the end of injection than that of a single jet.