Conjugate-gradient solver

Clémence · May 16, 2014, 09:51

Hello,

I have this error message at each iteration:

"Conjugate-Gradient solver did not converge !"

Do you know what it means?

(I am running a simulation with a turbulent k-epsilon, L-I, steady model)

Thanks

vince60270 · May 16, 2014, 09:57

Seen this Problem before the solution is the following, in the tree outline go to:

Solver->Segregated Flow->Pressure->AMG Linear Solver->Acceleration method->None

it 's not a a big Problem as far as i know..It's because you use a steady model maybe so you are running without acceleration calculation so no Need to use the acceleration method.

May 16, 2014, 09:51	Conjugate-gradient solver	#1
Clémence New Member Join Date: May 2014 Posts: 12 Rep Power: 11	Hello, I have this error message at each iteration: "Conjugate-Gradient solver did not converge !" Do you know what it means? (I am running a simulation with a turbulent k-epsilon, L-I, steady model) Thanks

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May 16, 2014, 09:57		#2
vince60270 New Member vincent Join Date: May 2014 Posts: 24 Rep Power: 11	Seen this Problem before the solution is the following, in the tree outline go to: Solver->Segregated Flow->Pressure->AMG Linear Solver->Acceleration method->None it 's not a a big Problem as far as i know..It's because you use a steady model maybe so you are running without acceleration calculation so no Need to use the acceleration method.