Obtaining Energy Spectra from Physical variables
I got an LES code that I have started to work with. I would like to know how to obtain the energy spectra plot after carrying out a numerical simulation. The results are in terms of physical space quantities such as u,v,w,p etc..What is the way to convert them to E(k), k ..the wave number space? Is there any standard program that I could use of ..I request someone direct me to some sources in this concern.
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