CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Suggestion- regarding devergence x- momentum

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Display Modes
Old   September 29, 2008, 09:39
Default Suggestion- regarding devergence x- momentum
Posts: n/a
Hi all,

I have the following problem I am trying to simulate the flow on square block using k-epsilon turbuelnce model

I have inlet velocity to be 1.5m/s so that with the turbulent intensity at inlet to be 0.5% and the hydraulic dia 0.2 m

its a 2d case where in I am gettting the following error

Divergence detected in amg solver x-momentum after few iterations

time step I have given is 0.00066

any suggestions

and one more question regarding gambit meshing immediately after grid check in fluent says that grid has high aspect ratio and asks us to turn on the high aspect ration computation using text mode? any Idea regarding this

  Reply With Quote

Old   September 29, 2008, 10:27
Default Re: Suggestion- regarding devergence x- momentum
Posts: n/a

mesh is the problem..check the skewness of mesh..if it is more than 0.97, divergence may occur.

remesh it again..and try
  Reply With Quote

Old   September 30, 2008, 00:52
Default Re: Suggestion- regarding devergence x- momentum
Posts: n/a
As Jay points out, inadequate mesh resolution may be the reason. Please try doubling the number of cells.
  Reply With Quote


Thread Tools
Display Modes

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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
need suggestion Kishore FLUENT 2 September 27, 2006 16:49
need some suggestion nabeel FLUENT 4 June 27, 2006 00:36
need some suggestion nabeel mohsin FLUENT 7 August 23, 2005 04:45
Who is Who in CFD? - A suggestion. ma Main CFD Forum 2 June 16, 2004 16:41
Suggestion please newbie FLUENT 0 October 29, 2001 22:28

All times are GMT -4. The time now is 01:32.