This example considers a transonic cold air jet issuing from a converging nozzle section.  The initial statistics for the acoustics solver were computed using a cubic k-epsilon RANS model and the acoustics data was subsequently interpolated on to an acoustics mesh with a reduced outer domain and relaxed near-wall stretching.

The far-field boundary treatment allowed NLAS to operate on a mesh of approximately 500,000 cells, compared with 3.5 million for that of the initial steady-state RANS calculation.