Assessment of Reynolds stress turbulence closures in the calculation of a transonic separated flow

In this study, the performances of various turbulence closure models are ev aluated in the calculation of a transonic flow over axisymmetric bump. k-ep silon, explicit algebraic stress, and two Reynolds stress models, i.e., GL model proposed by Gibson & Launder and SSG model proposed by Speziale, Sark ar and Gatski, are chosen as turbulence closure models. SSG Reynolds stress model gives best predictions for pressure coefficients and the location of shock. The results with GL. model also show quite accurate prediction of p ressure coefficients downstream of shock wave. However, in the predictions of mean velocities and turbulent stresses, the results are not so satisfact ory as in the prediction of pressure coefficients.