|June 29, 2010, 09:32||
Coakley q-omega turbulence model
Join Date: Mar 2009
Location: Penn State Applied Research Laboratory
Posts: 146Rep Power: 10
Some users may be interested to know that I have added Coakley's q-omega two-equation turbulence model to the Breeder_1.5 branch of the SVN repository. This is likely to be of interest mainly to users coming from other CFD codes where the q-omega model was used, U2NCLE being the primary example.
This is currently a low-Reynolds number or "no-slip" formulation (where q should be fixedValue 0 and omega should be zeroGradient at the wall), although I hope I will find time soon to add generalized wall functions.
The q-omega equations are essentially derived by a simple change of variables from the Jones-Launder k-epsilon model, but formulating the equations in terms of q rather than k helps to eliminate the need for a low-Reynolds-number dissipation term (Coakley, AIAA 83-1693). The formulation also leads to finite values of omega at the wall, helping to make the model relatively robust numerically.
The source code and a flat plate tutorial test case can be obtained from the openfoam-extend SVN repository using the following command:
David A. Boger
|Thread||Thread Starter||Forum||Replies||Last Post|
|Use of k-epsilon and k-omega Models||Jade M||Main CFD Forum||23||February 8, 2017 15:27|
|SimpleFoam case with SpalartAllmaras turbulence model implemented||nedved||OpenFOAM Running, Solving & CFD||2||November 30, 2014 23:43|
|Adding a Turbulence Model||doug||OpenFOAM Running, Solving & CFD||10||October 2, 2012 06:55|
|KOmega Turbulence model from wwwopenFOAMWikinet||philippose||OpenFOAM Running, Solving & CFD||30||August 4, 2010 10:26|
|v2-f turbulence model in CFX?||flga||CFX||14||November 23, 2006 07:12|