{"id":249456,"date":"2023-02-10T20:26:33","date_gmt":"2023-02-10T20:26:33","guid":{"rendered":"\/forum\/forums\/topic\/acoustic-pressure-calculation-les-fh-w\/"},"modified":"2023-02-21T23:30:06","modified_gmt":"2023-02-21T23:30:06","slug":"acoustic-pressure-calculation-les-fh-w","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/acoustic-pressure-calculation-les-fh-w\/","title":{"rendered":"Acoustic pressure calculation LES + FH-W"},"content":{"rendered":"

Hello<\/p>\n

I have been calculated acoustcs created by the water flow in the 3D pipe like the figure. Since the vortex is occur at the pipe connection, acoustics is created there. <\/p>\n

I calculated k-e model to initializel and then calculate LES with Ffowcs- Howkings Williams model to calcualte acoustics. Inlet velocity is 2.0 ft\/s, outlet pressure is 6,000psi. Time step size is 5e-5 and Number of time steps is 20,000.The result is the next figure. It is showing a significantly high pressure in some places, the calculations do not appear to be working. Also, I could not understand why ot osn’t centerd on 0. Would you tell me why this result is calculated? And what should I do to get the correct result? <\/p>\n

Let me know if you need additional information. Thanks!!<\/p>\n

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