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Influence of Inflow Turbulence in Shock-Wave/Turbulent-Boundary-Layer Interaction Computations

机译:入流湍流对激波/湍流边界层相互作用计算的影响

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摘要

The influence of inflow turbulence on the results of Favre-Reynolds-averaged Navier-Stokes computations of supersonic oblique-shock-wave/turbulent-boundary-layer interactions (shock-wave Mach-number M_(SW) ~ 2.9), using seven-equation Reynolds-stress model turbulence closures, is studied. The generation of inflow conditions (and the initialization of the flowfleld) for mean flow, Reynolds stresses, and turbulence length scale, based on semi-analytic grid-independent boundary-layer profiles, is described in detail. Particular emphasis is given to freestream turbulence intensity and length scale. The influence of external-flow turbulence intensity is studied in detail both for flat-plate boundary-layer flow and for a compression-ramp interaction with large separation. It is concluded that the Reynolds-stress model correctly reproduces the effects of external flow turbulence.
机译:流入湍流对超声速斜波-激波/湍流边界层相互作用(波马赫数M_(SW)〜2.9)的Favre-Reynolds平均Navier-Stokes计算结果的影响,使用7-研究了雷诺-应力模型湍流闭合方程。详细描述了基于半解析网格无关边界层轮廓的平均流量,雷诺应力和湍流长度尺度的流入条件的生成(以及流场的初始化)。特别强调自由流湍流强度和长度尺度。对于平板边界层流和大间距的压缩-斜坡相互作用,都详细研究了外流湍流强度的影响。结论是,雷诺应力模型正确地再现了外部流动湍流的影响。

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