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How can I transform pressure fluctuations into frequency domain signal in Fluent?

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Old   January 2, 2024, 10:25
Default How can I transform pressure fluctuations into frequency domain signal in Fluent?
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Hello everyone. I'm working with a centrifugal fan modeled in the transient regime to study the Sound Pressure Level (SPL). I've employed a set of probes to monitor the pressure in the fan discharge and capture the fluctuations necessary for noise analysis and spectral analysis.

Now, my question is: How can I convert time-accurate pressure data into a frequency domain signal to represent the fan's noise?

While Fluent offers the Time Fourier transform option, it seems to be designed specifically for acoustic receivers. In my case, all monitor pressures were configured as points within the domain at specific coordinates at the fan discharge (see attached figure).

Thanks in advance...!
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Old   January 5, 2024, 09:59
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you can import time vs pressure data into FFT to post-process it in frequency domain. To consider for multiple dataset from many points, i believe you have to post-process it outside of fluent. Correct me if i'm wrong tho

Last edited by lolno; January 5, 2024 at 10:00. Reason: fixed image link
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fan analysis, noise, sound pressure level

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