DOI: 10.1615/TSFP2
INERT AND REACTING FLOWS WITH A NEW CUBIC EDDY-VISCOSITY MODEL
RESUMO
A third-order expression of the Reynolds stresses as a function of the local strain rate and vorticity, is developed. Anisotropies in the normal stresses, streamline curvature, rotation of the reference frame, and swirl are accounted for. The relationship is linked to a k−ε model, with a modified ε-equation. A new low-Reynolds source term is introduced and a model parameter is written in terms of dimensionless strain rate and vorticity. The model is applied to a stationary and rotating fully developed channel and pipe flow, to the flow over a backward-facing step and to a piloted jet diffusion flame. A comparison is made with results from the linear k − ε model due to Yang and Shih (1993) and Menter's shear stress transport model (Menter, 1994).