Development and application of a dilatational covariances model for compressible mixing layers

S. Thangam, J. R. Ristorcelli, Y. Zhou

Research output: Contribution to conferencePaperpeer-review

2 Scopus citations

Abstract

A dilatational covariances model based on a pseudosound constitutive relation is developed in conjunction with a recursion renormalization group (r-RNG) based anisotropic Reynolds stress closure. The model is applied for the prediction of turbulent compressible mixing layers. The calculations are used to evaluate the complex physical phenomena affecting compressible mixing layers. The rate of growth of the mixing layer is retarded by the combined effects of compressible dissipation, the pressure-dilatational covariances, and the anisotropic turbulence stresses. The pressure-dilatational, essentially a nonequilibrium effect, reduces the amount of excess production over dissipation available for the turbulence energy growth. The influence of anisotropic Reynolds stress is analyzed. All coefficients in the model and used in these computations are predicted by the theory.

Original languageEnglish
StatePublished - 1997
Event35th Aerospace Sciences Meeting and Exhibit, 1997 - Reno, United States
Duration: 6 Jan 19979 Jan 1997

Conference

Conference35th Aerospace Sciences Meeting and Exhibit, 1997
Country/TerritoryUnited States
CityReno
Period6/01/979/01/97

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