Performance of RANS turbulence models in predicting strained flows in a curved duct

摘要

In this paper, we assess the performance of four RANS turbulence models in computing the averaged flow field through a curved duct. The Models studied are the standard k- ￡ , the standard k- ω, The Reynolds Stress Model, and the v2 f model. Although the four models showed similar quantitative agreement for the tangential velocity profile with experimental measurements, it was only the v2 / model that correctly predicted the expected secondary flow pattern. Moreover, the V~2f model was the only model to capture the zero turbulence kinetic energy areas in which laminarization of the flow occur.