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

Penalty vs mixed formulation in FEA

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

Reply
 
LinkBack Thread Tools Display Modes
Old   April 8, 2005, 14:57
Default Penalty vs mixed formulation in FEA
  #1
m. malik
Guest
 
Posts: n/a
I will appreciate knowing the views of the CFD workers who have experience with both penalty and mixed formulations for the finite element analysis of non-Newtonian, incompressible flows.

Just briefly the reason for this query: My interest is in the simulation of polymer flows in processing equipment. I use my own three-dimensional pentaly-Galerkin finite element code for the solution of the three conservation equations with 8-node hexahedral elements. At times I face severe problems of negative pressures (which are obtained in post-processing from p = -(viscosity)(penalty parameter)div (v-vector)). There are other less troublesome problems too. For these reasons, I am now thinking of developing the simulation code with mixed formulation and see how that goes.

Unfortunately, I am unable to dig out any information on the comparison of the two formulations. And so the question with me is: Will the efforts on another code be worthwhile?

Regards.
  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
Mixed cell zone remeshing in FLUENT 12 ChesterP FLUENT 6 November 1, 2011 07:53
FEA s/w or FEA forums Prashant Main CFD Forum 7 December 7, 2003 10:42
Navier stokes compresible viscid flow fea, somebody can help? Jose Choy Main CFD Forum 3 October 24, 2003 02:28
? on mixed formulation for incompressible flow kenn Main CFD Forum 1 July 22, 2002 09:00
Compressible vs. Incompressible formulations Fernando Velasco Hurtado Main CFD Forum 3 January 7, 2000 17:51


All times are GMT -4. The time now is 11:07.