A turbulence model with variable coefficients for calculating mixing layers and jets
- 82 Downloads
Currently available turbulence models for calculating mixing layers and jets are considered. The reasons for inadequate modeling of initial jet regions are analyzed. The problem of the sensitivity of certain turbulence models to the freestream value of ω is studied. The necessity of introducing variable turbulent-transport coefficients and a correction for axial symmetry is shown. A differential model with variable coefficients for the Reynolds stresses is proposed which makes it possible to obtain adequate solutions in the self-similar regions of mixing layers and jets.
Keywordsturbulence models mixing layers jets
Unable to display preview. Download preview PDF.
- 2.W.A. Engblom, N.J. Georgiadis, and A. Kharavan, “Investigation of Variable-Diffusion Turbulence Model Correction for Round Jets,” AIAA Paper No. 3085 (2005).Google Scholar
- 3.J.C. Kok, “Resolving the Dependence on Free stream Values for the k-ɛ Turbulence Model,” AIAA J. 38, 1292 (2000).Google Scholar
- 6.P.R. Spalart and S.R. Allmaras, “A One-Equation Turbulence Model for Aerodynamic Flows,” AIAA Paper No. 439 (1992).Google Scholar
- 7.D.C. Wilcox, Turbulence Modeling for CFD, DCW Industries, La Cañada, Ca. (1998).Google Scholar