Single-Stream Round Jet at M = 0.9

Results from three partners obtained using different non-zonal Grey Area Mitigation (GAM) approaches in different CFD codes are compared for an isothermal, single-stream, static round jet at \( M = 0.9 \) and \( Re_{D} = 1.1 \times 10^{6} \). A systematic grid resolution study, using up to four different resolutions, shows encouraging convergence with grid refinement of the mean flow and (for one partner) the far-field noise towards experimental data. Excellent results are achieved using the novel methods for an important flow which was previously difficult to handle using standard DES methods.