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- W3170129337 abstract "A direct numerical simulation of the interaction between a shock wave and the supersonic turbulent boundary layer in a compression–decompression corner with a fixed 24° deflection angle at Mach 2.9 is conducted. The characteristics of the shock interactions are investigated for two heights between the compression and decompression corners, corresponding to H / δ ref = 4.25 , 1.22, where δref denotes the reference turbulent boundary layer thickness. A classic shock wave/turbulent boundary layer interaction flow is reproduced in the higher case. For the lower case, the size of the separation region is significantly decreased, and the low-frequency unsteadiness is slightly suppressed in the interaction region, as assessed by analyzing the mean and fluctuating wall pressure. Flow patterns near the reattachment line show the existence of the Görtler vortices. By analyzing the curvature radius and Görtler number distribution, it was found that a strong centrifuge instability is reserved in the compression corner region and reversed in the decompression corner region due to the convex streamline curvature. The downstream flow of the decompression corner is relatively complex where the additional shocklet and new streamwise vortices are observed. A negative response mechanism is found regarding fluctuating wall-pressure signatures between the upstream and downstream of the decompression corner." @default.
- W3170129337 created "2021-06-22" @default.
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- W3170129337 date "2021-06-01" @default.
- W3170129337 modified "2023-09-27" @default.
- W3170129337 title "Direct numerical simulation of a supersonic turbulent boundary layer over a compression–decompression corner" @default.
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- W3170129337 doi "https://doi.org/10.1063/5.0052453" @default.
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