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Old   January 10, 2007, 12:21
Default AMG solver
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When I run a case, an error occurred. The error information is as follows:

Error: divergence detected in AMG solver:x-momentum Error Object:#f

It is appreciated to share similar experience.


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Old   January 10, 2007, 13:01
Default Re: AMG solver
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Tighten your under relaxation factors and then run. For instnace check on momemtum under relaxation factors now say its 0.5 tighten it to 0.1. Then this error should go away. However doing this increase your tun time. KP
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Old   January 10, 2007, 16:56
Default Re: AMG solver
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For my case, it also happens when I changed to a parallel solver with auto partition. After I used Metis partition, it disappeared.

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Old   January 12, 2007, 07:58
Default Re: AMG solver
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Thanks! using coupled solver and a smaller urf, the case is working.
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Old   March 13, 2012, 13:48
Default divergence detected in AMG solver: x-momentum
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Hello. i am doing a multiphase simulation in a packed bed using the mixture model. the volume fraction used was 0.5316.i keep getting the error message "divergence detected in AMG solver: x-momentum" for all the different solvers used and i even changed the under relaxation factors. i really have no idea how to proceed with this simulation!plzz help!thank u.
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Old   September 21, 2012, 03:40
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