Turbulence in Compressible Flow-Physics and Modeling.

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  • Turbulence in Compressible Flow Physics

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Abstract

Many turbulent flows of interest to mechanical and aerospace engineers are compressible, and we need to know whether turbulence models developed in incompressible flows can be relied on in compressible flow, or whether their coefficients need to be made functions of some suitable compressiblity parameter. Now the coefficients in a turbulence model are related to, and in some cases actually equal to, the parameters used to describe turbulence structure. Therefore the real question is whether the structure parameters are affected by compressibility. In this paper our current knowledges will be reviewed, with the needs of modeling in mind.

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