Extension of a simplified Baldwin-Lomax model to nonequilibrium turbulence: Model, analysis and algorithms

摘要

Complex turbulence not at statistical equilibrium is impossible to simulate using eddy viscosity models due to a backscatter. This research presents the way to correct the Baldwin-Lomax model for nonequilibrium effects and gives an analysis of the energy evolution in the corrected model. Furthermore, a finite element approximation of the corrected eddy model with first-order and second-order time discretization is also presented. A numerical test is given to support the theory.