CFD Online Logo CFD Online URL
Home > Forums > Main CFD Forum

non equilibrium boundary layer

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

Like Tree1Likes
  • 1 Post By Bak_Flow

LinkBack Thread Tools Display Modes
Old   February 26, 2005, 06:01
Default non equilibrium boundary layer
Posts: n/a
hi all what does mean non equilibrium boundary layer. thanks
  Reply With Quote

Old   February 26, 2005, 21:03
Default Re: non equilibrium boundary layer
Posts: n/a

this refers to the ballance of production of turbulent kinetic energy and the dissipation. When the 2 are in a rough ballance the turbulent boundary layer is said to be in equilibrium.

This has important consequences in turbulence modelling. We can fairly easily write the production terms and have some confidence in how close the modeling is to the true physics.

We always have trouble coming up with arguments for the dissipation terms and infact most models that use a dissipation equation have so many assumptions imbedded along the way that you really have to view it as a model equation.

A good place to start reading is the chapter on turbulence in Ferziger and Peric's text.

Best Regards,

hasanifte likes this.
  Reply With Quote

Old   February 27, 2005, 06:17
Default Re: non equilibrium boundary layer
Posts: n/a
thanks Bak_Flow abdellah
  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
[GAMBIT] problems in boundary layer yubaibai88 ANSYS Meshing & Geometry 8 April 19, 2010 21:07
Adapt mesh without modifying boundary layer cells? Freeman FLUENT 0 February 22, 2009 15:11
3D Boundary Layer Mario FLUENT 0 February 17, 2009 04:40
Convective Heat Transfer - Heat Exchanger Mark CFX 6 November 15, 2004 16:55
boundary layer thickness 98.4F Main CFD Forum 1 December 29, 2000 08:23

All times are GMT -4. The time now is 04:20.