|April 2, 2011, 14:21||
[MATLAB] FFT of Velocity Time Series
Join Date: Mar 2010
Posts: 108Rep Power: 8
I'm looking to create a frequency spectra of energy to show that I am in fact resolving down to the Kolmogorov scales. I have saved velocity values at each time step, but from there I'm sort of confused. I know how to do a fast fourier transform in matlab, but am really not sure how I go about creating the plot of E vs. omega (frequency). From what I understand, I need to do the FFT, calculate the magnitude of the coefficients I receive, and then I square this to get energy? From there, how do I plot this again my frequency?
Any help would be appreciated, I've never really used matlab before and I've also never done an FFT.
Thanks in advance,
|Thread||Thread Starter||Forum||Replies||Last Post|
|velocity vs time plot in paraFoam||raagh77||OpenFOAM Paraview & paraFoam||5||February 8, 2011 11:18|
|mesh file for flow over a circular cylinder||Ardalan||Main CFD Forum||6||April 17, 2010 23:40|
|Emergency:UDF for a time dependent parabolic velocity||zumaqiong||Fluent UDF and Scheme Programming||12||March 25, 2010 13:00|
|Problems with simulating TurbFOAM||barath.ezhilan||OpenFOAM||13||July 16, 2009 05:55|
|DPM UDF particle position using the macro P_POS(p)[i]||dm2747||FLUENT||0||April 17, 2009 01:29|