external flow fft -- CFD Online Discussion Forums

November 12, 2010, 03:55	external flow fft	#1
mrozer New Member mustafa Join Date: Nov 2010 Posts: 1 Rep Power: 0	ı am beginner of cfd and I am planing to do transient analsysis in external flow to get in a surface pressure result and then I would like to do FFT for this result to get pressure in frequency domain. 1) I can not figure out what is time step size and number of time step to compensate 400-10.000 Hz pressure specturum for unsteady analysis ? 2) is there any example to get fft conversion in cfd analysis ? regards ozer

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