Recovery of Distorted Turbulent Boundary Layer and Shock / Shock Interaction Through Recovering Boundary Layer

概要

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The recovery of the turbulent boundary layer on a flat plate distorted by the reflection on the oblique shock wave, and the interaction between the reflected oblique shock system and the separation shock ahead of the forward-facing step through the distorted boundary layer were investigated both experimentally and numerically. As the increase in the shock strength, the interaction becomes severe, causing the bound-ary layer separation. The shape factor of the turbulent boundary layer distorted by the oblique shock reflection recovers exponentially in the downstream direction. The interaction is roughly classified into three typical cases ; In the first case, the separation shock is far downstream of the reflected oblique shock system, and they are almost independent each other. In the second case, the separation shock is blurred to the compression wavelets due to the weakened boundary layer, and the reflected shock system remains almost unchanged. In the third case, the separation shock occurs ahead of the reflected shock system, and merges into the front leg of the reflected shock system.
一般社団法人日本機械学会の論文
1997-11-15