Prediction of Turbulence Transpiration Resulting from Asymmetric and Symmetric Mass Injection in a Porous Channel

In the present paper, a numerical program including different turbulence models has been developed by the present authors to investigate the internal compressible flows subjected to a strong asymmetric/symmetric mass injection from a porous wall. The program is based on the control volume approach to solve the governing Reynolds-Averaged Navier-Stokes (RANS) equations. Turbulence modeling plays a significant role here, in light of the complex flow generated, so several popular engineering turbulence models with good track records are evaluated, including five different turbulence models. Numerical results with available experimental data showed that the flow evolves significantly with the distance from the front wall such that different regimes of flow development can be observed. The comparison between these computational models with experimental data for the axial velocity profiles and turbulent stresses is performed. In the first case, the best numerical results are obtained from the shear-stress transport