lattice-boltzmann, higher reynolds flow
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Actually there's no "perfect" model for turbulence in the sense of computational efficiency. Grad or SuperBurnett models based on Navier-Stokes are good but computational expensive. LBM can be used also for turbulence but instead of LBGK which is a linear approach best suited for steady state, the collision operator should consider extra terms and then it becomes non linear and suitable for handling large Re and moderate Kn numbers.
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I'm curious, because I thought LB was notoriously bad for turbulence (because the grid would have to be ridiculously fine in order to get accurate eddies)?
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No, it is just a part of my course project.
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Very, very cool. Is this from your PhD or something?
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Great...what was your grid size??
mak541 1 year ago
@mak541 I'm no sure now. I think it was 512x256.
ZnahNah 1 year ago
What software did you use to make this animation? It looks much better than those made using TECPLOT.
rapters1983 3 years ago
My own code.
So I used MSVC, ImageMagick library for saving images and VirtualDub to convert them into .avi
ZnahNah 3 years ago
Cool! What visualization method did you use? I have misjudged it to be an experimental result.
rapters1983 4 years ago
Brightness of pixel shows local speed. Also I add a lot of small green particles, which were blurred by youtube's codec.
ZnahNah 4 years ago