Same case does not converge after initialisation

yashmash · June 14, 2011, 05:44

Hi guys,

I an running a simulation on a tank filling. Previously the solution converged but as I re-initialised the problem (for checking), the solution did not converge anymore. Fluent still performs its calculations but the residuals are way too high!!

If that has happened to anyone, could you tell me why and what I can do to resolve this?

Cheers

p4lm0r3 · June 14, 2011, 10:48

I have never heard of this happening. It has been my experience that running the same simulation twice will produce exactly the same results.

Were you're simulations run with the same bc's/solver/methods/initialization/etc?

yashmash · June 14, 2011, 22:09

Yes its the same case, everything is still the same.

p4lm0r3 · June 15, 2011, 10:09

I do not know then. I am not a FLUENT expert, I have only been using it for about a year now.

June 14, 2011, 05:44	Same case does not converge after initialisation	#1
yashmash New Member Join Date: Jun 2011 Posts: 18 Rep Power: 15	Hi guys, I an running a simulation on a tank filling. Previously the solution converged but as I re-initialised the problem (for checking), the solution did not converge anymore. Fluent still performs its calculations but the residuals are way too high!! If that has happened to anyone, could you tell me why and what I can do to resolve this? Cheers

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Interfoam Droplet under shear test case	adona058	OpenFOAM Running, Solving & CFD	3	May 3, 2010 19:46
Doubt in unsteady case	vijay	FLUENT	1	April 24, 2006 12:11
New case	Constantinos Zervides (Zervides)	OpenFOAM Pre-Processing	5	October 24, 2005 04:34
HELP !In relaxtion factor converge is taken or not	MANOJ KUMAR	FLUENT	5	September 22, 2005 05:16
Whatbs best way to create new case	jvn	OpenFOAM Pre-Processing	2	June 20, 2005 22:19

June 14, 2011, 10:48		#2
p4lm0r3 New Member John Palmore Join Date: Jun 2010 Posts: 8 Rep Power: 16	I have never heard of this happening. It has been my experience that running the same simulation twice will produce exactly the same results. Were you're simulations run with the same bc's/solver/methods/initialization/etc?

June 14, 2011, 22:09		#3
yashmash New Member Join Date: Jun 2011 Posts: 18 Rep Power: 15	Yes its the same case, everything is still the same.

June 15, 2011, 10:09		#4
p4lm0r3 New Member John Palmore Join Date: Jun 2010 Posts: 8 Rep Power: 16	I do not know then. I am not a FLUENT expert, I have only been using it for about a year now.