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

high positive linear source term using FEM

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

Reply
 
LinkBack Thread Tools Display Modes
Old   June 11, 2008, 03:46
Default high positive linear source term using FEM
  #1
Isi
Guest
 
Posts: n/a
Hello!

I have a question about finite element method (FEM) solving Coupled Navier-Stokes equations.

The pair of elements I am using is Q2/Q1 for velocity/pressure respectively.

I want to solve the velocity vector and the pressure and I have a positive high linear source term, called T*u, where u is the velocity I want to solve.

I can solve (both implicity and explicity) the coupled system with FEM without any stabilization when the value of T is not very big. But when T has a big value, I don't get the correct solution.

The mesh is really fine, so I don't know if the only solution I have is to use stabilized FEM.

If the solution is this one, could you recommend me some article about it. I have something from Huges and Codina.

I would be really gratefully if you could give me some help.

Thanks in advance and best regards Isi
  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
Problem of SOURCE term gradient in UDS wind Fluent UDF and Scheme Programming 5 June 21, 2013 05:39
How to define a transient species source term? aleisia FLUENT 3 March 7, 2011 23:58
Compiling gmshFoam with OpenFOAM-1.5 BlGene Open Source Meshers: Gmsh, Netgen, CGNS, ... 10 August 6, 2009 04:26
Adding a momentum source term segersson OpenFOAM Running, Solving & CFD 5 March 3, 2006 00:06
UDF Source Term Units? Brian FLUENT 1 October 24, 2005 09:15


All times are GMT -4. The time now is 16:22.