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

Combining compressible incompressible equations in cht

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 23, 2015, 12:35
Default Combining compressible incompressible equations in cht
  #1
New Member
 
Join Date: Oct 2015
Posts: 5
Rep Power: 10
Taukiki is on a distinguished road
Hey there,

I made two modifications of the chtMultiRegionSimpleFoam Solver. One with the equations from rhoSimpleFoam (chtCompressible), the other with the simpleFoam (chtIncompressible) equations.
I found this out: if I set the thermodynamic properties in the chtCompressible solver to "incompressible", then I don't get the same results for for pressure and velocity field as with the chtIncompressible solver (even though after comparing all equations I think the results should be the same).
Now my goal is to make a new cht-solver that unites both (chtIncompressible and chtCompressible) solvers. Did anybody try this before? Are there issues when combining the e.g. turbulence models together?
I don't find any literature about this on the internet and am wondering why nobody tried this before. Or does anybody have an idea why I apparently can't simulate an incompressible fluid withe the compressible equations? I dont have access to a linux computer right now (christmas) but I'm thinking about it all the time...
Thank you so much for ideas and have a great fest.

Best
Kiki
Taukiki is offline   Reply With Quote

Reply


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
Modify compressible solver to incompressible mingzhao OpenFOAM Programming & Development 0 September 18, 2015 17:46
Modify compressible solver to incompressible mingzhao OpenFOAM Running, Solving & CFD 0 September 18, 2015 12:50
incompressible to compressible cfdgeek Main CFD Forum 9 September 3, 2008 23:54
Compressible vs. Incompressible formulations Fernando Velasco Hurtado Main CFD Forum 3 January 7, 2000 16:51
Compressible vs. incompressible NS at high Temperatures Jean Lacroix Main CFD Forum 1 December 24, 1999 06:21


All times are GMT -4. The time now is 20:10.