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strange residual plot

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Old   September 26, 2013, 06:02
Exclamation strange residual plot
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James
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Hi Foamers,

I attach the residual plot of one of my simulations. Anybody knows why temperature residuals fluctuate so much?

I have a channel with two inlets, an outlet and a wall. I have adapted the implementation for using simpleFoam with temperature ("How to add temperature to icoFoam).

This results are given with an unstructured tetrahedral mesh. If I use an hybrid mesh with prismatic boundary layer I don see this behaviour for residual plot of temperature.

So I guess the problem is the mesh, but I am not sure.

If needed I can attach the modified solver.

Thanks for all the suggestions.
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File Type: jpg resiudlas.jpg (48.2 KB, 16 views)
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Old   September 28, 2013, 09:30
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Nima Sam
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it may related to mesh as you said, so you may want to try some limited scheme in your fvSchemes
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