Abstract: The performance of two different turbulence closure models in the prediction of turbulent swirling flow is presented .The models evaluated are the Reynolds stress transport model (RSM_SSG) and the Kw_SST model . This study is a direct comparison between numerical simulation and measurements of the overall flow variables mean and kinetic turbulent of a swirled turbulent flow with different sections. The comparison of the calculation results with measurements confirmed the inadequacy of two models. This handicap is related to the complexity of the structure of the flow (unsteady, three-dimensional, various turbulence scales...)

Key words: Swirl, Turbulence, Simulation.