CFD Online Logo CFD Online URL
Home > Forums > Fluent UDF and Scheme Programming

UDF for turbulence models

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

LinkBack Thread Tools Display Modes
Old   August 21, 2012, 12:15
Default UDF for turbulence models
New Member
Join Date: Feb 2012
Posts: 6
Rep Power: 6
twray is on a distinguished road
Hello all,

Can a completely new turbulence model be implemented with a UDF? Specifically I'm interested in the zeta-f, v2-f, and RSA models.

My understanding so far is that it is possible to do the zeta-f and v2-f models because they also use the original k-epsilon transport equations. However, in the RSA model, k and epsilon have algebraic relations and are not defined by transport equations. Since this is a different implementation of k and epsilon I'm unsure if the use of a UDF is possible for the RSA model.

Any insight is appreciated,
twray is offline   Reply With Quote

Old   August 22, 2012, 06:34
eng_s_sadeghi's Avatar
Join Date: Mar 2011
Posts: 64
Rep Power: 6
eng_s_sadeghi is on a distinguished road
You may could model it by entering sources, changing variables in turbulent models panel. Or, write two user defined scalars for turbulent parameters.
Saeed Sadeghi
Ansys Fluent CFD Consultant
eng_s_sadeghi 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
ATTN ALL: SOLUTON TO UDF COMPILE PROBLEM Rizwan Fluent UDF and Scheme Programming 32 May 8, 2015 06:05
Incompressible Turbulence models achinta OpenFOAM 4 May 27, 2010 10:35
Two-fluid models vs mixture models for bubbly flows Hansong Tang Main CFD Forum 6 December 8, 2009 04:21
HELP! adding a mass source to VOF eqn. by UDF??? ROOZBEH FLUENT 4 May 29, 2003 09:54
UDF...UDF...UDF...UDF Luc SEMINEL FLUENT 0 November 25, 2002 05:03

All times are GMT -4. The time now is 07:54.