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

How to calculate initial omega for k_omega_SST

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

Reply
 
LinkBack Thread Tools Display Modes
Old   March 20, 2013, 14:59
Default How to calculate initial omega for k_omega_SST
  #1
New Member
 
Join Date: Jan 2012
Location: Germay - Stuttgart
Posts: 21
Rep Power: 5
HaZe is on a distinguished road
Hi Foamers,

I'm having problems with my OF Simulation. My case is a internal combustion engine and I'm simulating the gas exchange without combustion. It's probably the turbulence model (k-epsilon) and therefor I'd like to run the simulation again with k-omega-SST. My problem now is how to calculate the initial values for omega in the internal and boundary field. I already searched the forum and had a look into the tutorials. In the cases I had a look at the initial omega varied in a huge range between 4.5e-3 and 77200.

Is there a broad rule how to choose the initial omega?

Regards,
HaZe
HaZe is offline   Reply With Quote

Old   March 20, 2013, 15:50
Default
  #2
Senior Member
 
Håkon Strandenes
Join Date: Dec 2011
Location: Norway
Posts: 111
Rep Power: 10
haakon will become famous soon enough
Have you tried the "Turbulence properties" calculator here at cfd-online.com? You find it under the "Tools" menu at the top.

http://www.cfd-online.com/Tools/turbulence.php
haakon 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
pisoFoam - unstable pressure residual Industrial_CFD OpenFOAM Running, Solving & CFD 21 February 24, 2013 16:39
why divergence occures in these cases immortality OpenFOAM Running, Solving & CFD 2 January 25, 2013 11:21
Differences between serial and parallel runs carsten OpenFOAM Bugs 11 September 12, 2008 11:16
Unknown error sivakumar OpenFOAM Pre-Processing 9 September 9, 2008 12:53
Convergence moving mesh lr103476 OpenFOAM Running, Solving & CFD 30 November 19, 2007 15:09


All times are GMT -4. The time now is 21:02.