second order upwind cause divege !! -- CFD Online Discussion Forums

August 4, 2009, 16:00	second order upwind cause divege !!	#1
khsiavash New Member khsiavash Join Date: Apr 2009 Posts: 3 Rep Power: 17	Dear friends I`ve developed a non linear eddy viscosity model with UDF.when I use the first order upwind for all transport equations it is OK! solution converged. But when I switch on second order upwind solution is going to diverging.up to an error "turbulent viscosity limited to....." and finally floating point. how can I solve this diverging ?

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Trackbacks are Off Pingbacks are On Refbacks are On Forum Rules

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
2nd order upwind and QUICK scheme	Wiroon	Main CFD Forum	19	September 17, 2019 04:47
Second Order Upwind: Residuals	enricokr	FLUENT	28	January 2, 2018 18:41
First order upwind	leung	FLUENT	2	June 13, 2004 09:09
First Order Upwind	Giovanni Ieria	FLUENT	3	November 30, 1999 19:43
second order FD upwind scheme	Heinz Wilkening	Main CFD Forum	2	November 3, 1998 15:33

All times are GMT -4. The time now is 13:21.