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March 7, 2002, 16:32 |
Using CFD to predict noise generation
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#1 |
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I am beginning to use CFD for analyses of flow through valves, some of which have tortuous pathes. In addition to the normal information such as flow patterns, pressure drops, etc., I am interested in the noise generated by the flow including the frequency spectrum. Are there any ways to get this information from a CFD analysis? Are there any programs better than others for getting this information?
Thank you, Alan H. Glenn |
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March 8, 2002, 03:56 |
Re: Using CFD to predict noise generation
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#2 |
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March 8, 2002, 10:12 |
Re: Using CFD to predict noise generation
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#3 |
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If you collected enough time-accurate data (pressure, density, velocity) on the solid surface or on a closed surface surrounding whatever surface you're simulating, you can write a little post-processing code that uses the so-called Ffowcs Williams - Hawkings equation to compute at any observer location the sound history. Just type Ffowcs Williams - Hawkings on Google, and you will find much more info.
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March 8, 2002, 11:09 |
Re: Using CFD to predict noise generation
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#4 |
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Thank you for the information. It should be very helpful.
Thank you, Alan Glenn |
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March 8, 2002, 11:12 |
Re: Using CFD to predict noise generation
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#5 |
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Thank you for this information. It should be helpful.
Thank you, Alan Glenn |
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March 9, 2002, 16:23 |
Re: Using CFD to predict noise generation
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#6 |
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You should check out RADIOSS-CFD. Our website www.mcube.fr gives numerous examples of Computational Aero-Acoustic (CAA) applications under the M-Explicit section.
Regards, Dimitri |
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