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Jet noise prediction of an underexpanded jet exhausted from chevron nozzle

The Aeroacoustics module enables accurate prediction of near-field noise and its projection to the far field. In order to capture the low amplitude pressure fluctuations associated with noise generation, high-order computational tools are required. AEROFLO provides this capability at all speeds, from low Mach numbers subsonic flows to hypersonic flows. Various approaches for projecting the near-field sound to the far field are available in AEROFLO.

For the simulation shown below, combined RANS/LES procedures were used for most of the calculations of jet noise, while the combined stability-RANS-wave packet approach was rigorously investigated for unparalleled computational efficiency in noise prediction.

TTC LES Tools show potential as a pratical methodology (Click image to enlarge)

Aeroacoustics methodology
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