The Modeling of Variable Density Turbulent Flows. A review of first-order closure schemes
Author: Chassaing, Patrick
Source: Applied Scientific Research, Volume 66, Number 4, July 2001 , pp. 293-332(40)
Abstract:The paper is intended as a review of where eddy-viscosity turbulence models have reached in accounting for the several distinct effects of variable density and high-Mach number behaviour on the development of turbulent shear flows. Three generations of ``compressible models'' are depicted: a first one based on variable density and compressible adjustments of ``incompressible'' schemes, a second one in which it is presumed that explicit dilatational terms can account for variable density and compressibility effects, and a third one, where such effects are taken implicitly in association with structural changes of the turbulent field. The latter are hardly tractable when using first-order closure schemes, but more reliable than the former in accounting for most observed variable density and compressibility effects in turbulent shear flows.
Document Type: Research Article
Publication date: July 1, 2001