Development and Validation of a Turbulent-Mix Model for Variable-Density and Compressible Flows
The modeling of buoyancy driven turbulent flows is considered in conjunction with an advanced statistical turbulence model referred to as the BHR (Besnard-Harlow-Rauenzahn) k-S-a model. The BHR k-S-a model is focused on variable-density and compressible flows such as Rayleigh-Taylor (RT), Richtmyer-Meshkov (RM), and Kelvin-Helmholtz (KH) driven mixing. The BHR k-S-a turbulence mix model has been implemented in the RAGE hydro-code, and model constants are evaluated based on analytical self-similar solutions of the model equations. The results are then compared with a large test database available from experiments and direct numerical simulations (DNS) of RT, RM, and KH driven mixing. Furthermore, we describe research to understand how the BHR k-S-a turbulence model operates over a range of moderate to high Reynolds number buoyancy driven flows, with a goal of placing the modeling of buoyancy driven turbulent flows at the same level of development as that of single phase shear flows. © 2010 The American Physical Society.
A. Banerjee et al., "Development and Validation of a Turbulent-Mix Model for Variable-Density and Compressible Flows," Physical Review E: Statistical, Nonlinear, and Soft Matter Physics, American Physical Society (APS), Jan 2010.
The definitive version is available at http://dx.doi.org/10.1103/PhysRevE.82.046309
Mechanical and Aerospace Engineering
Article - Journal
© 2010 American Physical Society (APS), All rights reserved.