I am studying jet mixing noise and I am given a velocity field, with Vx, Vy, Vz in x and y coordinates. I wanted to know if there's a method in which I could find some information relating to the sound level produced from the pressure field.
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If your end goal is an estimation of the sound level then you don't need to calculate the pressure field first, you can estimate the sound level directly from the characteristic jet velocity using Lighthill's eighth power law, assuming your velocities are subsonic.
https://en.wikipedia.org/wiki/Lighthill%27s_eighth_power_law
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$\begingroup$ How exactly would you apply Lighthill's 8th power law to the velocity field? $\endgroup$ Commented Mar 17, 2021 at 22:15
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$\begingroup$ You would need to calculate a representative velocity for the jet from the velocity field. $\endgroup$– NickCommented Mar 17, 2021 at 22:38