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

Convergence judgment

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 18, 2014, 03:07
Default Convergence judgment
  #1
Member
 
Simas
Join Date: Mar 2012
Posts: 37
Rep Power: 6
zombiaska is on a distinguished road
Hi,

I am trying to model heat transfer in a heat exchanger. I tried this model with all boundary conditions turned on, but convergence was unsuccessful.

In methodical theory it was written to try same model without energy equation and firstly get only flow converged. I get this result in attached picture. Not sure what to do. Is it converged? because residuals are stable, but it's value is high. I checked mesh it has max skewness 0.88, average 0.18. For flow I use inlet-velocity and pressure outlet. Also checked flow streams it seems pretty much logic. The one thing I am not sure about is too high value of residuals.

I also monitor outflow velocity. It doesn't almost not oscillate.
Attached Images
File Type: jpg 41-1-03100.jpg (42.5 KB, 13 views)
zombiaska 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Convergence Centurion2011 FLUENT 33 November 8, 2016 16:08
Time step dependence of convergence behavior of steady state simulations in CFX Chander Main CFD Forum 5 December 23, 2013 06:31
Force can not converge colopolo CFX 13 October 4, 2011 22:03
Convergence of CFX field in FSI analysis nasdak CFX 2 June 29, 2009 01:17
Defect correction and convergence ganesh Main CFD Forum 4 June 30, 2006 14:20


All times are GMT -4. The time now is 02:49.