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 language | English |
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State | Published - 1997 |
Event | 35th Aerospace Sciences Meeting and Exhibit, 1997 - Reno, United States Duration: 6 Jan 1997 → 9 Jan 1997 |
Conference
Conference | 35th Aerospace Sciences Meeting and Exhibit, 1997 |
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Country/Territory | United States |
City | Reno |
Period | 6/01/97 → 9/01/97 |