|May 18, 2013, 00:31||
FFT with non-uniformly distributed data
Join Date: Jan 2013
Location: yokohama, Japan
Posts: 83Rep Power: 4
I'm using the adjustTimeStep in pimpleFoam to do my simulation, so my timestep is not uniform. After the calculation I need to get the frequency of the lift force, but as the force data is not evenly distributed, it seems difficult to do this. I tried using linear interpolation to convert the data into uniform one, but there seems to be some discrepancy.
does anyone have any idea on how to do this?
|May 20, 2013, 21:17||
Join Date: Jul 2009
Location: Amherst, MA USA - San Diego, CA USA
Posts: 278Rep Power: 9
Not sure what kind of discrepancy you're seeing...You could always change the way the time steps are written to force them to be uniform and that would solve your problem.
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