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divergence after patch

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Old   October 31, 2013, 15:39
Question divergence after patch
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mehdimoradi
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Hello
I have been performed a multiphase simulation using eulerian option. Primary phase is air and secondary phase is grain. in begining of simulation i patched volume fraction of granular phase as 0.5.
solution was diverged: Error: Divergence detected in AMG solver: pressure correctio. Error object:#f.
then for solving i removed the patching process. solution was converged.
what idea is proposed to convergence happened in patching option??
Any help would be thankful.
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Old   November 3, 2013, 05:30
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bahare
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hi
iits better to reduce relaxation factor of momentum andd pressure
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Old   November 3, 2013, 08:27
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Quote:
Originally Posted by bahare View Post
hi
iits better to reduce relaxation factor of momentum andd pressure
Hello
Thanks for your answer;
These factors were reduced to 0.1 or lower. but the problem was diverged.
please any suggestion??
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Old   November 3, 2013, 08:30
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Quote:
Originally Posted by bahare View Post
hi
iits better to reduce relaxation factor of momentum andd pressure
Hello
Thanks for your answer;
These factors were reduced to 0.1 or lower. but problem diverged.
any suggestion??
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