CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Running, Solving & CFD

field versus equation under relaxation factors

Register Blogs Community New Posts Updated Threads Search

 
 
LinkBack Thread Tools Search this Thread Display Modes
Prev Previous Post   Next Post Next
Old   July 15, 2012, 18:20
Default field versus equation under relaxation factors
  #1
Senior Member
 
Mihai Pruna
Join Date: Apr 2010
Location: Boston
Posts: 195
Rep Power: 16
mihaipruna is on a distinguished road
what do the equation relaxation factors do. I noticed if I set any equation under relaxation factor to under 0.9 in rhoSimplecFoam I get a floating point error during the first time step.
For instance, the values below do work but anything lower in equation under-relaxation factors will cause a crash when calculating h.

relaxationFactors

{

fields

{

p 0.30000;

rho 0.3000;
U 0.3;

}

equations

{

U 0.90000;

h 0.90000;

k 0.90000;

omega 0.90000;

}

}
mihaipruna is offline   Reply With Quote

 


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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Relaxation Factors for Transient solvers philippose OpenFOAM Running, Solving & CFD 19 March 20, 2014 04:39
error message cuteapathy CFX 14 March 20, 2012 06:45
Under Relaxation Factors in CFX Pre akj Main CFD Forum 0 December 15, 2011 01:50
XiFoam relaxation factors tavasoly OpenFOAM Running, Solving & CFD 0 July 1, 2008 02:54
Under Relaxation Factors venigall FLUENT 1 January 19, 2007 02:42


All times are GMT -4. The time now is 06:59.