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January 26, 2014, 21:40 |
Conjugate-Gradient solver did not converge!
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#1 |
New Member
sazrul
Join Date: Jul 2013
Location: Kuala Lumpur
Posts: 4
Rep Power: 12 |
Hi experts,
Currently I am running an Under hood Thermal Management analysis using Star-ccm+ v8.06.005. However, I am facing this error; 'Conjugate-Gradient solver did not converge' while I am trying to run the solution. Can anyone tell me what does this error means? What should I do to fix it? Your kind help is highly appreciated . Regards, Sazrul Kuala Lumpur. |
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January 29, 2014, 09:19 |
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#2 | |
New Member
Alexey
Join Date: May 2009
Location: St.Petersburg, Russia
Posts: 23
Rep Power: 16 |
Quote:
You may switch off CG and this message the following way. Select: Solver->Segregated Flow->Pressure->AMG Linear Solver->Acceleration method->None |
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April 18, 2016, 17:43 |
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#3 | |
New Member
sulaiman
Join Date: Feb 2016
Posts: 18
Rep Power: 10 |
Quote:
If I ignore the acceleration, I believe that will affect my simulation, Am I right? Is there a way to fix this issue and get convergence w/o ignoring acceleration? Thanks! |
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April 19, 2016, 14:36 |
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#4 | |
New Member
Alexey
Join Date: May 2009
Location: St.Petersburg, Russia
Posts: 23
Rep Power: 16 |
Quote:
If you don't want to ignore the acceleration then try to make experiments, for example decreas Under-relaxation factor. Solver->Segregated Flow ->Velocity->Under-relaxation factor and Solver->Segregated Flow ->Pressure->Under-relaxation factor Good luck! |
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April 19, 2016, 15:02 |
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#5 | |
New Member
sulaiman
Join Date: Feb 2016
Posts: 18
Rep Power: 10 |
Quote:
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