convergence problem -- CFD Online Discussion Forums

October 26, 2004, 13:51	convergence problem	#1
chin Guest Posts: n/a	I am doing simulation on a laminar flow in a capillary tube. However, i have problems on convergence. At first instance, the mass continuity residual increase and i lower the under-relaxation factor as suggested by the Fluent Guide book. It seems alright buy after about 200 iterations, the residual starts to increase again, from 2.5e-2 to 3.2e-2. May i know what's the possible problem again? Do i need to stop and again lower the under relaxation factor? or any othe rpossible reasons?

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
convergence problem when use pisoFoam, LES for wind tunnel case	Forrest_Lei	OpenFOAM	3	July 19, 2011 06:00
convergence problem	commonyue	Main CFD Forum	1	December 1, 2009 03:54
Convergence of CFX field in FSI analysis	nasdak	CFX	2	June 29, 2009 01:17
3D Fluid Flow Convergence problem	Emily	FLUENT	2	March 21, 2007 22:18
Non Convergence of 3D Heat transfer cfd problem	Balraj	Main CFD Forum	3	December 9, 2004 00:24

All times are GMT -4. The time now is 16:13.