CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Main CFD Forum

help

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

Reply
 
LinkBack Thread Tools Display Modes
Old   September 25, 2011, 02:54
Question help
  #1
New Member
 
rajlakshmi
Join Date: Sep 2011
Posts: 4
Rep Power: 5
rajlakshmi is on a distinguished road
hello frds,
i got some problem during simulatinga two phase flow in micro T junction..
error come as "divergence detected in AMG solver.pressure correction"
can anybody say me what went wrong
rajlakshmi is offline   Reply With Quote

Old   September 27, 2011, 11:13
Default divergence - AMG
  #2
Senior Member
 
CFDtoy
Join Date: Mar 2009
Location: United States
Posts: 145
Blog Entries: 2
Rep Power: 8
CFDtoy is on a distinguished road
The pressure correction solver doesnt like the constructed matrix - check your solver controls.

1. Reduce relaxation for momentum and pressure and run it.
2. Check your phase change conditions (UDF if you wrote them).
3. Also, try increasing the AMG cycles (min and max cycle limit).

If you are running turbulence - check initial conditions and relaxation for turbu ke and dissipation.

This is a perfect exercise for you to play with the solver controls and get good results.


good luck.


/CFDtoy


Quote:
Originally Posted by rajlakshmi View Post
hello frds,
i got some problem during simulatinga two phase flow in micro T junction..
error come as "divergence detected in AMG solver.pressure correction"
can anybody say me what went wrong
__________________
CFDtoy
CFDtoy is offline   Reply With Quote

Reply

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



All times are GMT -4. The time now is 17:37.