Convergence issues

February 21, 2007, 17:59

When running a turbulent case in Fluent, I am getting a message stating that the turbulent viscosity ratio limited to 1.0e+5. Does anyone know how to fix this?

February 23, 2007, 00:55

Are you usung standard-k-e? Try realizable k-e. Perhaps it gets better.

February 23, 2007, 04:16

be patient ... it needs some time to converge ... some more iterations ... try to adjust under-relaxation parameters

wabik

February 23, 2007, 13:07

What do you want to fix? Make the message go away - then change the tolerance in the set-up. If the value is unrealistically high, then you would take a different approach.

February 21, 2007, 17:59	Convergence issues	#1
Zachary Sorensen Guest Posts: n/a	When running a turbulent case in Fluent, I am getting a message stating that the turbulent viscosity ratio limited to 1.0e+5. Does anyone know how to fix this?

February 23, 2007, 00:55	Re: Convergence issues	#2
Michele Guest Posts: n/a	Are you usung standard-k-e? Try realizable k-e. Perhaps it gets better.

February 23, 2007, 04:16	Re: Convergence issues	#3
wabik Guest Posts: n/a	be patient ... it needs some time to converge ... some more iterations ... try to adjust under-relaxation parameters wabik

February 23, 2007, 13:07	Re: Convergence issues	#4
Allan Walsh Guest Posts: n/a	What do you want to fix? Make the message go away - then change the tolerance in the set-up. If the value is unrealistically high, then you would take a different approach.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Convergence	Centurion2011	FLUENT	48	June 14, 2022 23:29
Force can not converge	colopolo	CFX	13	October 4, 2011 22:03
convergence issues on steady state solver	icemaniac178	CFX	1	March 30, 2011 19:11
Convergence of CFX field in FSI analysis	nasdak	CFX	2	June 29, 2009 01:17
Grid size, convergence issues	franzdrs	Main CFD Forum	3	June 18, 2009 07:57