Computations of Complex Turbulent Flows Using the Commercial Code Fluent

Abstract

The present paper is primarily concerned with practical aspects of modeling complex turbulent flows. The issues of meshing and discretization, which are prerequisite to successful prediction of complex turbulent flows, are discussed. Near-wall treatments are briefly reviewed with the main focus on the wall function approach in view of its practicality in simulating complex industrial flows. Computational results obtained using a selected number of turbulence models, ranging from a simple one-equation model to a differential Reynolds-stress model, are presented and discussed to assess what the models can offer for complex turbulent flows involving strong pressure gradients, separation, crossflow, and shocks.