Development of a turbulence model based on the energy spectrum for flows involving rotation

A generalized eddy viscosity model is formulated by using the rotation modi fied energy spectrum. Rotation and mean shear effects are directly included in the eddy viscosity without the use of the local equilibrium assumption. The formulation also includes the modeling of vortex stretching and viscou s destruction terms of the dissipation rate equation based on the limit of rotating isotropic turbulence at high Reynolds numbers. The rotation modifi ed energy spectrum includes the contribution of rotation effects on the dis sipation and structure of turbulence. The model is shown to reproduce the d ominant effects of rotation on turbulence in rotating homogeneous shear flo ws and turbulent channel flows subject to spanwise rotation. The general ap plicability of the model and its implications are also addressed. (C) 1999 American Institute of Physics. [S1070-6631(99)02808-1].