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

MRFSimpleFoam and turbulence models

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 19, 2011, 10:49
Question MRFSimpleFoam and turbulence models
  #1
New Member
 
Andrey
Join Date: May 2010
Posts: 4
Rep Power: 16
Andrey M. is on a distinguished road
Hello!

Can anybody explain why did high-Re turbulence models are used in all MRFsimplefoam cases( and even in cases that used GGI) tutorial? If I understand everything clearly than high-Re models used near-wall functions. In there turn, wall functions constructed on idea about exact type of the velocity profile and velocity value below 0 on the surface. If we talk about moving/rotating wall than there is some velocity on it surface and so we can't use near-wall functions, can we?
Please, explain what did I miss in my talk?
__________________
Best regards,
Andrey
Andrey M. is offline   Reply With Quote

Old   April 30, 2015, 06:40
Default
  #2
Senior Member
 
M. Montero
Join Date: Mar 2009
Location: Madrid
Posts: 155
Rep Power: 17
be_inspired is on a distinguished road
Some doubt here. I am using OF2.3.x to simulate a wind turbine and strange results are obtained with activating turbulence. k and epsilon over the surface is not real.
be_inspired is offline   Reply With Quote

Reply

Tags
ggi, mrfsimplefoam, near wall functions, turbulence model

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
MRFSimpleFoam amp Salome Meca tommie OpenFOAM Running, Solving & CFD 5 November 5, 2014 03:54
Convergence with MRFSimpleFoam grugg OpenFOAM Running, Solving & CFD 7 March 28, 2014 05:56
MRFSimpleFoam Tutorial bastil OpenFOAM Running, Solving & CFD 48 August 1, 2012 11:00
MRFSimpleFOAM goes divergenced! renyun0511 OpenFOAM Running, Solving & CFD 0 November 19, 2009 03:11
How can run MRFSimpleFoam with KOmegaSST turbulence model waynezw0618 OpenFOAM Running, Solving & CFD 0 April 21, 2008 05:40


All times are GMT -4. The time now is 09:16.