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Noise determination in CFX

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Old   August 14, 2018, 07:37
Default Noise determination in CFX
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Shreesh Gudi
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Hello everyone,

I am trying to carry out CFD analysis of a ceiling fan using MRF, i want to determine how much noise the fan is generating in decibels. Can someone helo how to find the same in CFX post?
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Old   August 14, 2018, 08:34
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Glenn Horrocks
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You cannot extract this data in post processing, not unless you have set it up to output the data in advance.

Put a pressure monitor point somewhere you want the noise level at and rerun the simulation. Extract the pressure versus time history from solver manager and use the formula for sound levels on the pressure history.
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Old   August 16, 2018, 02:46
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Shreesh Gudi
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Dear Glenn,

Thanks for the reply, could you please elaborate on how to put a pressure monitor point in CFX-Pre?
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Old   August 16, 2018, 02:49
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Glenn Horrocks
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Using monitor points is basic CFX stuff - have a look at the tutorial examples available from the ANSYS Customer website or Academic portal.
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