CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Community Contributions

[waves2Foam] Turbulence problems, possibly due to density issues

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

LinkBack Thread Tools Search this Thread Display Modes
Old   December 5, 2015, 08:34
Default Turbulence problems, possibly due to density issues
New Member
Join Date: Sep 2015
Posts: 6
Rep Power: 8
app1e is on a distinguished road
Hi ngj,
Thanks for the powerful tool.
I got the desired result when I generated wave using laminar.But when i switch to turbulence model,say RNG k-epsilon,the surface elevation at a certain probe decays significantly.I think the problem maybe the missing of density term in the k&epsilon equations afterI read your phd thesis (N. G. Jacobsen 2011. ) and the post below:
Originally Posted by ngj View Post
Hi Nima,

Well the short answer is yes that turbulence models have been coupled with waveFoam, however, if you strictly stick to the turbulence formulations in OpenFoam, you will get poor results, as the turbulence formulation in OF does not consider the density in the equations, hence excessive diffusion of turbulence takes place over the interface, which results in rapid decay in the wave height.

Therefore, you need to formulate the turbulence equations correctly, namely including density in the turbulence equations.

Best regards,


So is there any guide to modify the turbulence equations as I am not familia with the C++..
Thank you in advance

Last edited by wyldckat; August 25, 2018 at 12:18. Reason: changed post number to quoted post
app1e is offline   Reply With Quote

Old   December 6, 2015, 15:20
Senior Member
Niels Gjoel Jacobsen
Join Date: Mar 2009
Location: Copenhagen, Denmark
Posts: 1,893
Rep Power: 35
ngj will become famous soon enoughngj will become famous soon enough
Good evening,

@Aloha: No, there is no guide available that described how to include the density in the turbulence closure. Please verify that the scale of your problem actually requires a turbulence model.

Kind regards,

Please note that I do not use the Friend-feature, so do not be offended, if I do not accept a request.

Last edited by wyldckat; August 25, 2018 at 12:18. Reason: removed answers to other posts that were on the main thread
ngj is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Turbine simulation and turbulence parameters: Floating point exception issues DaveR OpenFOAM Running, Solving & CFD 4 December 1, 2016 11:19
Turbulence model issues chmurillor FLUENT 0 July 15, 2014 04:34
Turbulence dampening due to magnetic field in LES and RAS eelcovv OpenFOAM 0 June 8, 2010 11:35
Discussion: Reason of Turbulence!! Wen Long Main CFD Forum 3 May 15, 2009 09:52
Convergence problems with SSG turbulence model Ram CFX 1 June 19, 2006 10:08

All times are GMT -4. The time now is 17:56.