CFD Online Logo CFD Online URL
Home > Forums > FLUENT

eddy viscosity for k-epsilon model

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

LinkBack Thread Tools Display Modes
Old   January 24, 2006, 13:22
Default eddy viscosity for k-epsilon model
Posts: n/a
I am trying to model flow over surface mounted cube in a channel using k-epsilon model. Does fluent calculate the eddy viscosity on its own or do we always have to calculate it using the user defined functions? Other question is for the near wall modeling approach. I am trying to use the enhanced wall treatment. But it too looks like a combination of wall functions and the two layer approach. Is there any modeling treament which gives the k-epsilon model completely integrabale upto the wall?

Thank you
  Reply With Quote

Old   January 24, 2006, 18:42
Default Re: eddy viscosity for k-epsilon model
Posts: n/a
The turbulent viscosity is computed by fluent using the values of k and e. If you are interested in the velocity field near a wall you should use the k-omega model, which is better for low-Re zones.

  Reply With Quote

Old   January 27, 2006, 04:25
Default Re: eddy viscosity for k-epsilon model
Posts: n/a
hi we can directly get the values of eddy viscosity in plot , vector or contour from fluent itself. Can u give me some idea about ur boundary conditions because i am also soving the problem of turbulent flow over obstacles.

Reply soon
  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
Adding a new viscosity model ICL OpenFOAM Running, Solving & CFD 20 April 10, 2017 22:44
Wall functions for near wall treatment : k - epsilon model fivos Main CFD Forum 4 April 27, 2011 07:44
Curvature Effects using the Standard K Epsilon Model syler3321 CFX 2 October 19, 2010 20:53
UDF, Herschel-Bulkely model don't have Yielding viscosity term emad Fluent UDF and Scheme Programming 0 May 19, 2009 12:46
eddy viscosity Mike CFX 1 April 4, 2006 13:12

All times are GMT -4. The time now is 13:11.