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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Aeroacoustics of a duct with flap › Reply To: Aeroacoustics of a duct with flap

June 29, 2023 at 4:43 am
Bhanu Gupta
Ansys Employee

Regarding capture Frequency(f) <5 you would not require refining the mesh but having longer signal length which means more flow time for recording the data(Atleast 0.2sec matured signal for f=5 Hz resolution). LES would definately require resolving BL and hence can be expensive, I would suggest using Stress Blended Eddy Simulation(SBES) turbulence model. SBES is scale resolving turbulence model resolving core flow using LES and near wall modeling using SST KW. This is one of the recommended turbulence model for Acoustics without resolving the boundary layer.