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-   -   AMG solver divergence (http://www.cfd-online.com/Forums/fluent/88567-amg-solver-divergence.html)

wprostaff May 20, 2011 07:49

AMG solver divergence
 
Hi,
I'm modelling a more than 15 million elements absorption column. I think the setup and mesh are ok, but i'm getting AMG solver divergence.. The computer has only 4 gb RAM..the question is, could it be possible that this error message is connected with a lack of memory?
Thanks

k_k May 20, 2011 10:11

hi,

1. Are u running it on a seggregated solver? try shifting to coupled solver, or the other way round.

2. Start the run with very small under relaxation factors, (say 0.1)

Try this, hope it works.

Cheers

wprostaff May 20, 2011 10:31

Quote:

Originally Posted by k_k (Post 308576)
hi,

1. Are u running it on a seggregated solver? try shifting to coupled solver, or the other way round.

2. Start the run with very small under relaxation factors, (say 0.1)

Try this, hope it works.

Cheers

Hi K_K,
I've run it on the coupled solver and I've set the under-relaxation factors low but not as low as you are suggesting me..So I'll try it.
I hope it works..Thanks


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