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

K-w implementation

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 22, 2006, 04:45
Default K-w implementation
  #1
ganesh
Guest
 
Posts: n/a
Dear Friends,

I jus implemented K-w turbulence model in my 2D solver. The implementation is in terms of logarithmic variables( following IIlnca etal.). This helps to guarantee positivity without any undue limiting on k and w. I am able to get the right results on coarse grids, but on finer grids I have problems in reproducing the right skin friction distribution, although I seem to get the pressure distribution ok. I use implicit time stepping with constant reconstruction for turbulence variables and linear reconstruction for the rest. I have directly implemented the Wilcox model, without any further modifications. If anyone has had experience in this, could you please tell about the influence of the freestream values on the solution and of any other problem on fine grids. Is it also really necessary to get a good initial guess for the probelm on fine grids ?

Any suggestions in this regard are most appreciated.

Regards and Thanks in advance,

Ganesh

  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
Implementation of boundary conditions for FVM Tom Main CFD Forum 7 August 26, 2014 05:58
Improved implementation of dynamic Smagorinsky alberto OpenFOAM Running, Solving & CFD 78 August 22, 2014 09:16
Implementation issues of fvSchemes / laplacianScheme, in particular gaussLaplacianSch thomek OpenFOAM Programming & Development 0 October 18, 2010 05:10
Please explain the implementation of species transport Eqn in reactingFoam kallipygian OpenFOAM Running, Solving & CFD 0 October 13, 2008 07:29
Implementation of wall function with SA model Bala Main CFD Forum 0 October 7, 2004 23:54


All times are GMT -4. The time now is 21:48.