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December 9, 2010, 18:17
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Acoustic field in a centrifugal fan
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#1 |
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Member
Mohammad.R.Shetab
Join Date: Jul 2010
Posts: 49
Rep Power: 16  |
Hi everyone
I want to work on the noise prediction of a centrifugal fan with radios about 30cm.(745 rpm) The question is because I should predict pressure fluctuations, should I solve the flow compressible or incompressible?!!! And what solvers should I use?!! thanks Mohammadreza |
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December 10, 2010, 02:59
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#2 |
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Member
Tobias Holzinger
Join Date: Mar 2009
Location: Munich, Germany
Posts: 46
Rep Power: 17 |
Hi Mohammadreza,
sounds quite incompressible, so I would recommend icofoam. I only do compressible simulations with rhoPisoFoam... Depends on what you want to simulate... Maybe you should first define your goals before you select the solver...
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Tobias Holzinger Chair of Thermodynamics, TU München |
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December 10, 2010, 06:19
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even for acoustic field?!
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#3 |
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Member
Mohammad.R.Shetab
Join Date: Jul 2010
Posts: 49
Rep Power: 16 |
Dear Tobias
Thank you for your answer. I know that the flow is incompressible and it should be solved with solvers MRFSimpleFoam(for steady) and turbDyMFoam(for unsteady). But my question is acoustic field is something different from flow field. I mean noise generation and propagation is something based on pressure fluctuaion and relatively density fluctuation. In this kind of problems, should I still solve the flow incompressible?!! Thanks Mohammadreza |
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