energy spectra from LES simulations
I am using lesInterfoam for running some two phase simulations using the one eq eddy model.
I am doing a mesh convergence study, so i want to compare the energy spectra from different meshes.
I have successfully made a utility called KE which extracts the Total kinetic energy from all the time steps, I made it by changing a few lines of the Lamda2 utility and compiling it, and the utility works fine. i have used something like "0.5*U&U" to extract the Total Kinetic energy. I got this from a post.
Actually I am new to this kind of energy spectra analysis, so iam not sure how to use the total kinetic energy and produce a energy spectra. Any comments from experienced LES users is welcome. Also any literature explaining how to extract energy spectra from Total Kinetic Energy is also welcome.
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