To check whether the solution is converging

raunakjung · February 16, 2017, 22:28

I am carrying out transient simulation in fluent. Turbulence model used in k-e with scalable wall function. Velocity inlet condition is used and static pressure outlet condition is used.
Time step size is 0.002 giving courant number around 10.
Absolute criteria for convergence of residual is 10^-6
Under relaxation factors are :
Momentum 0.5
TKE 0.5

I am not sure if the solution is converging or not ? Please help me in the following :

juliom · February 17, 2017, 08:40

Not at all.....

raunakjung · February 17, 2017, 18:42

Quote:

Originally Posted by juliom

Not at all.....

It's a very simple domain and setup. What could be affecting convergence? I changed the relaxation factors right away . Does this affect convergence ?
Thank You

February 16, 2017, 22:28	To check whether the solution is converging	#1
raunakjung Senior Member raunak jung pandey Join Date: Jun 2016 Posts: 102 Rep Power: 10	I am carrying out transient simulation in fluent. Turbulence model used in k-e with scalable wall function. Velocity inlet condition is used and static pressure outlet condition is used. Time step size is 0.002 giving courant number around 10. Absolute criteria for convergence of residual is 10^-6 Under relaxation factors are : Momentum 0.5 TKE 0.5 I am not sure if the solution is converging or not ? Please help me in the following :

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February 17, 2017, 08:40		#2
juliom Senior Member Julio Mendez Join Date: Apr 2009 Location: Fairburn, GA. USA Posts: 290 Rep Power: 18	Not at all.....