Simulation of impinging turbulent jets

Numerical simulations of jets from round nozzles which impinge on a flat surface perpendicular to the nozzle axis have been conducted. Flows with single and double jets, with and without crossflow have been computed. The simulations are based on solutions of the compressible Reynolds averaged Navier-Stokes equations and a k-epsilon turbulence model in three dimensions. Comparisons with experimental data show generally good agreement for some complex flow phenomena. There are some specific inaccuracies in the calculations which may be attributable to known shortcomings of the k-epsilon model. The calculations reveal an unusual development for a confined upwash fountain resulting from two impinging jets.