CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM

Courant Number Increases Rapidly

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

LinkBack Thread Tools Display Modes
Old   March 29, 2013, 06:06
Default Courant Number Increases Rapidly
New Member
Md. Naimul Haque
Join Date: Jan 2013
Posts: 14
Rep Power: 6
najunaju is on a distinguished road
I am using kwsst turbulence model, I run some simulations with mesh, it had max mesh skewness 1.8E-08. These simulations converged very well and courant number was 0.5 throughout the case.

But when the same settings I run with a mesh whose max mesh skewness is 3.5 the cournat number increases gradually and reaches a very high value.

I am using Gauss Upwind schemes. Does any body knows is this the effect of skewness? if so What schemes I may use to get converged simulation.

Any kinds of help will be highly appreciable.

najunaju is offline   Reply With Quote

Old   April 2, 2013, 05:47
Senior Member
Join Date: Jun 2009
Location: France, grenoble
Posts: 265
Rep Power: 11
olivierG is on a distinguished road

You could try "skewCorrected" instead of upwind.

olivierG is offline   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
Courant number fireman FLUENT 5 July 28, 2016 12:55
Sudden jump in Courant number NJG OpenFOAM Running, Solving & CFD 7 May 15, 2014 13:52
Stable boundaries marcoymarc CFX 33 March 13, 2013 07:39
LES near wall model & courant number kasim CFX 5 March 16, 2008 19:23
IcoFoam parallel woes msrinath80 OpenFOAM Running, Solving & CFD 9 July 22, 2007 02:58

All times are GMT -4. The time now is 02:45.