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conjugate-gradient solver did not converge (troubleshooting)

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Old   July 24, 2016, 15:10
Post conjugate-gradient solver did not converge (troubleshooting)
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Dennis
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I'm simulating a FSAE car and Im using the same settings as in a simulation i did before and there was everthing right. But now im getting this after 11 iterations and after every iteration i have reversed flow, i haven't had this in my earlier simulation.
I don't know what can be wrong here...


I'm using the Surface Wrapper, because of many errors and sharp-edged wings
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Last edited by dennis722; July 25, 2016 at 07:05.
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Old   July 24, 2016, 17:53
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kevin alun
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i thought we talked about this already,
reduce relaxation factors
make sure cell quality remediation is on,
right click your regions to remove invalid cells

reverse flow is not a problem in the beginning that usually clears up,
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Old   July 24, 2016, 18:11
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Dennis
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i have no invalid cells, put the acceleration method->none and turned on the cell quality remediation. But i have still the problem
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conjugate gradient, invalid operation, reversed flow, troubleshooting, turbulent

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