CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > CFX

K-e model

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

LinkBack Thread Tools Display Modes
Old   November 23, 2002, 12:56
Default K-e model
Posts: n/a
Hi ,

For the turbulence model how can we estimate the value of turbulence intensity at the inlet if we don't have experimental data ? i guess this value will help in estimating the value of k and epsilon.


P.S i am CFX5.5.1 user
  Reply With Quote

Old   November 24, 2002, 09:18
Default Re: K-e model
Posts: n/a
Read down in this forum. There are several references to textbooks about turbulence such as Rodi (1980s) who provide explanation to this effect on a case per case basis.
  Reply With Quote

Old   November 25, 2002, 05:09
Default Re: K-e model
Posts: n/a
If the flow is fully developed, the turbulence intensity may be as high as a few percent.

There is a empirical correlation for pipe flows for turbulence intensity:


Best Regards,

  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
question about turbulence model selection and sensitivity karananand Main CFD Forum 1 February 26, 2010 05:41
Centrifugal Pump and Turbulence Model Michiel CFX 12 January 25, 2010 04:20
Problems bout CFD model of biomass gasification, Downdraft gasifier wanglong FLUENT 2 November 26, 2009 00:27
Reynolds Stress model in CFX vs Fluent Tim CFX 1 October 7, 2009 06:19
Grid resolution for full-scale and down scaled model gravis Main CFD Forum 0 October 2, 2009 10:27

All times are GMT -4. The time now is 14:18.