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Divergence in AMG solver

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Old   June 12, 2007, 13:09
Default Divergence in AMG solver
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I am trying to run a pipe flow case with finer grid,after few iterations, it gives divergence in AMG solver.In residual plot, I see that the continuity curve is diverging. The same case is running fine with coarse mesh size.

your help in this regard is appreciated.

Thanks Sri.
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Old   June 12, 2007, 13:19
Default Re: Divergence in AMG solver
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Hi i think u have a non -positive mesh volum,any where u have aproblem about your nesh. Best
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Old   June 12, 2007, 19:41
Default Re: Divergence in AMG solver
Tomasz Bednarz
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Please also check the grid size ratio... Try to avoid long cells (the best possible are square like cells)
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