Study of compressibility modifications to the k−ε turbulence model
- 1 September 1997
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids
- Vol. 9 (9), 2769-2788
- https://doi.org/10.1063/1.869468
Abstract
In modeling the effect of compressibility on the turbulence structure, additional physical mechanisms arise in production and dissipation of turbulent kinetic energy. Several proposed treatments dealing with the dilatation dissipation and the pressure dilatation correlation are discussed in the context of the two-equation model. Modifications accounting for the turbulent mass flux, enthalpic production, and baroclinic torque are also assessed along with the nonequilibrium treatment. These compressibility models are evaluated with the aid of experimental data for supersonic flow over an axisymmetric afterbody. With the free-stream Mach number of 2.46, the compressibility and nonequilibrium modifications give marginally better results for the turbulence structure and offer added insight into the mean and fluctuating flow fields.
Keywords
This publication has 24 references indexed in Scilit:
- Compressible turbulent channel flows: DNS results and modellingJournal of Fluid Mechanics, 1995
- The stabilizing effect of compressibility in turbulent shear flowJournal of Fluid Mechanics, 1995
- Numerical Computations of Supersonic Base Flow with Special Emphasis on Turbulence ModelingAIAA Journal, 1994
- Bounded Energy States in Homogeneous Turbulent Shear Flow—An Alternative ViewJournal of Fluids Engineering, 1992
- Structure of the Compressible Turbulent Shear LayerAIAA Journal, 1991
- Effects of compressibility on the characteristics of free shear layersAIAA Journal, 1990
- The compressible turbulent shear layer: an experimental studyJournal of Fluid Mechanics, 1988
- Navier-Stokes computations of projectile base flow with and without mass injectionAIAA Journal, 1985
- Compressible Turbulent Shear LayersAnnual Review of Fluid Mechanics, 1977
- A modified wall wake velocity profile for turbulent compressible boundary layers.Journal of Aircraft, 1973