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Divergence on AMG solver

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Old   August 9, 2007, 05:34
Default Divergence on AMG solver
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I am trying to perform a coupled calculation (fluid and energy)on a quite difficult geometry. After a few iterations, I get an error message : "Divergence on AMG solver : temperature". When I look to the contours of temperature, there is just a point where the temperature is very high. However when I check the mesh at this point, th e surounding cells are quite good. Does anyone know what is this problem and how I can deal with it? thank you

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Old   August 9, 2007, 07:21
Default Re: Divergence on AMG solver
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Try to usual things. Play with under relaxation factors, time step size etc. AMD solver settings can be fiddled with as a last resort.

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