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July 6, 2004, 17:21 |
Error message while iterating
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#1 |
Guest
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Hi everyone,
In the first few iterations I get the following error message: Error: divergence detected in AMG solver: pressure correction Error Object: () I run an axi-symmetric model of pipe with an orifice plate and use k-omega turbulence model. I've checked that I don't have any negetive volumes, if anyone know what seems to be the problem I'll be thankful to him. Thanks in advance, John BTW: Running the problem on laminar viscous model before k-omega is not an option due to insufficient model size for the development of separation bubble. |
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July 6, 2004, 17:44 |
Re: Error message while iterating
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#2 |
Guest
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Symmetry axis must be x , if not there's an error.
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July 7, 2004, 02:18 |
Re: Error message while iterating
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#3 |
Guest
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It is.... this is not the problem
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July 7, 2004, 13:10 |
Re: Error message while iterating
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#4 |
Guest
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Try lower under-relaxation factor for pressure.
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July 7, 2004, 13:15 |
Re: Error message while iterating
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#5 |
Guest
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check on mutligrid options may be u can lower the underelaxation factor for pressure as suggested by some but I am sure that will not help to an extent. may be u can try to check inintal boundary conditions and reduce the number of cells by making it coarser. bye
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July 12, 2004, 13:36 |
Re: Error message while iterating
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#6 |
Guest
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Try going to Solve --> controls and change Max. Coarse Levels to 0. Solve a few iterations and then restore the default (20).
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