CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Main CFD Forum

Bc for velocity splitting

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

Reply
 
LinkBack Thread Tools Display Modes
Old   January 13, 2002, 14:31
Default Bc for velocity splitting
  #1
Matthias
Guest
 
Posts: n/a
Dear all,

I would like to compute an incompressible turb. jet by LES and after that splitting the velocity field u = {u_1, u_2, u_3} into a potential and rotating part:

u = rot psi + grad phi

after applying the div - operator on this equ., I end up with

div u = 0 = laplace phi

Can anybody say how to find some usefull bc for this problem. Outside the jet flow I have u = 0 and also phi = 0, but at the jet outflow and inflow, I can not say phi = 0, otherwise I had the trivial solution ( with homogenous dirichlet at the bc) phi =0 everywhere which is obviously wrong. Has anybody experience in this matter or can refer some literature.

thanks in advance Matthias
  Reply With Quote

Reply

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
flux splitting emrah Main CFD Forum 3 August 30, 2014 08:53
Flux splitting Dr B.M. Smith (Smith) OpenFOAM Running, Solving & CFD 19 January 9, 2013 05:07
kepsilon - vanleer flux splitting solidcircle Main CFD Forum 0 May 18, 2011 11:45
Flux splitting for WENO scheme DSS Main CFD Forum 6 January 10, 2007 11:59
Time splitting in DNS fan Main CFD Forum 0 May 12, 2003 19:52


All times are GMT -4. The time now is 15:32.