AMG divergence and boundary layer mesh -- CFD Online Discussion Forums

November 4, 2007, 18:24	AMG divergence and boundary layer mesh	#1
Justin Guest Posts: n/a	Hi, all Recently I occurred the problem of AMG divergence: pressure correction. Firstly I checked my boundary condition by other model, it was fine. Then I changed the URF to 0.1 and 0.5 for pressure and others, but it was still diverged. I tried to use density based solver, it is no problem, but it needed more memory. So I tested the meshes. I found that if I deleted boundary layer mesh around walls, it also did work well. My question is why the boundary layer mesh( y+ =1)can cause the pressure correction error, while no problem for coupled solver?

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
Divergence in AMG solver!	marina	FLUENT	20	August 1, 2020 12:30
Error: divergence detected in AMG solver: pressure correction	sabin	FLUENT	1	September 3, 2011 05:53
Divergence in AMG solver! what does it mean ?!!	diwakarsingh64	FLUENT	0	December 23, 2010 07:14
Divergence detected in AMG solver: x-momentum	arashm	FLOW-3D	2	August 14, 2010 05:54
How to calculate the divergence on the boundary?	maximus	Main CFD Forum	1	July 11, 2004 03:35

All times are GMT -4. The time now is 04:21.