Numerical simulation of jets in a crossflow using different turbulence models

Calculation of a three-dimensional turbulent flow of square jets injected perpendicularly into a crossflow is performed computationally. The jet-to-crossfiow velocity ratios were selected to be 0.5, 1.0, and 1.5, and the jet Reynolds number was 4700 based on the jet diameter. We solved the Reynolds-averaged Navier-Stokes equations in the general form using the SIMPLE finite volume method over a nonuniform staggered grid. Our computational domain included the jet channel flows as well as the flow over a flat plate. For the turbulence modeling, the standard k-epsilon model with wall functions and the zonal (k-epsilon )l(k-omega) turbulence model (shear stress transport model) were used. The results of the two different turbulence models were compared with previous experimental data. It was noted that our results were much closer to the experimental data than those existing solutions of the same problem performed earlier.