conjugate-gradient solver did not converge (troubleshooting)

dennis722 · July 24, 2016, 15:10

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

marmot · July 24, 2016, 17:53

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,

dennis722 · July 24, 2016, 18:11

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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July 24, 2016, 17:53		#2
marmot Senior Member kevin alun Join Date: Sep 2011 Location: Germany Posts: 106 Rep Power: 15	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,

July 24, 2016, 18:11		#3
dennis722 Member Dennis Join Date: Jul 2016 Location: Germany Posts: 39 Rep Power: 10	i have no invalid cells, put the acceleration method->none and turned on the cell quality remediation. But i have still the problem