圧力勾配下における周期的後流通過が平板境界層バイパス遷移に与える効果(主流乱れが共存する場合)

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This paper deals with the investigation of wake-disturbed boundary layer on a flat-plate model with an elliptic leading edge. Main focus of this paper is on how the free-stream turbulence affects the transitional behavior of the boundary layer induced by periodic wake passing. Detailed measurements using a single-hot wire probe are made on bypass transition of the disturbed boundary layer over a flat-plate with favorable and adverse pressure gradients over the test surface. A spoked-wheel-type wake generator is used to generate periodic wakes. Free-stream turbulence intensities are controlled with three types of turbulence grids. Wake-affected boundary layer bypass transition is dominantly influnced by inlet free-stream turbulence intensities.
社団法人日本ガスタービン学会の論文
2001-11-20