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January 16, 2014, 23:26 |
Stirred tank convergence issue
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#1 |
New Member
Gurpreet
Join Date: Sep 2013
Posts: 16
Rep Power: 12 |
hi friends
i am simulating a stirred tank using mrf in ansys 14.0 . i am using SIMPLE presure -velocity and first order discretization scheme, once it partially converge then i switch to QUICK..I am able to converge to 10^-3 but i want it to converge till 10^-4. the problem is that all the errors in residuals goes to 10^-4 exept for 'epsilon'.what should i do.plz help |
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January 17, 2014, 04:46 |
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#2 |
New Member
Gurpreet
Join Date: Sep 2013
Posts: 16
Rep Power: 12 |
the convergence graph is something like this
can i say that i converged it to 10^-4 .i did around 9000 iterations |
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March 4, 2014, 14:50 |
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#3 |
Member
Join Date: Aug 2013
Location: Bangkok
Posts: 32
Rep Power: 12 |
Try to reduce the relaxation factor for turbulent quantities. I hope it can be help you.
Regards Eakarach |
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March 5, 2014, 05:20 |
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#4 |
Senior Member
Rick
Join Date: Oct 2010
Posts: 1,016
Rep Power: 26 |
Hi,
it seems converged to me; try to create some monitor surfaces and monitor some variables such as velocity for example; if that variable doesn't change solution is converged. Daniele |
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