CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM

attachdetach turbulence b.c.

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

LinkBack Thread Tools Display Modes
Old   February 14, 2011, 05:44
Default attachdetach turbulence b.c.
Senior Member
Join Date: Oct 2009
Posts: 140
Rep Power: 10
Peter_600 is on a distinguished road
Hi Foamers,

I ve a problem to set up a case with topological changes (OpenFoam 1.6-ext). I like to simulate a spark ignited engine with a pent roof, including valves. So far I managed to adapt a mesh motion class to my requirements. In order to close and open the valves a small curtain surface around the valve is introduced by the attachdetach meshModifier. The mesh works fine. I ve tested it with a pure mesh motion solver, but with egineDyMFoam (adjusted to the engineTopChangerMesh class) it doesn’t t work.
Segmentation fault when the turbulence->correct() is called. Till this step everything works fine.

Remark: Without the attachdetach meshModifier( turbulence on) it works and with attachdetach (turbulence off) it works as well. It seems that I ve a problem with the boundary conditions of the attachdetach faces for the turbulence model.
Furthermore, with 1.5-dev it works without a problem. There, the turbulence model doesn’t t ask for boundary conditions for the attachdetach faces but in 1.6-ext it does.

Does anyone has used the attachdetach approach in 1.6-ext so far with a turbulence model?

Best regards
Peter_600 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
B.C. for turbulence prashant.801 FLUENT 0 October 8, 2010 10:51
Discussion: Reason of Turbulence!! Wen Long Main CFD Forum 3 May 15, 2009 09:52
Recommended values on turbulence B.C. Jihwan Siemens 2 August 10, 2005 07:45
¡¾Q¡¿inflow turbulence B.C. of k-epsilon model? David Main CFD Forum 2 October 10, 2003 10:54

All times are GMT -4. The time now is 03:56.