三角形吹出し口縦渦発生ジェットによる境界層能動制御(境界層・粒子流れ)

概要

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Separation is mostly an undesirable phenomenon because it entails large energy loss in fluid machinery. The vortex generator jets have proven effective in the control of boundary layer separation. Longitudinal vortices are produced by the interaction between jets and a freestream. The vortex generator jets method is active control of flow separation and can achieve the adaptive control by properly adjusting the jet speed. In the previous study, it concluded that the triangle orifice generates the strong vortices and effective the pressure recovery in the diffuser. In this study, the vertex is changed with respect to the freestream direction for four types of triangle orifice (Model-L, D, U and R). The suppression effect of vortex generator jets on flow separation causes the different tendency when the vertex points to the right hand side (Model-R) with respect to the freestream direction.
一般社団法人日本機械学会の論文
2004-03-03