CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > OpenFOAM Running, Solving & CFD

The correction on pressure equation of SIMPLE algorithm in MRFSimpleFOAM solver

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 10, 2010, 02:47
Default The correction on pressure equation of SIMPLE algorithm in MRFSimpleFOAM solver
  #1
Member
 
任芸
Join Date: Jun 2009
Posts: 75
Rep Power: 8
renyun0511 is on a distinguished road
Hello,
I am studying pressure correction equation in SIMPLE algorithm by OpenFOAM-1.5-dev, and now I encounter a tough problem. So, I need your help.

The SIMPLE algorithm I studied is in the solver of MRFSimpleFoam and I want to add a new pressure prediction between the mass conserving pressure correction equation and the application of under-relaxation. Actually, the new pressure is the average pressure evaluated by multidimensional averaging. Thus
..
Where, is a previous iteration of pressure field. is computed via pressure equation in SIMPLE of MRFSimpleFOAM. is evaluated by multidimensional averaging. is the distance between the owner point and neighbor cell centers. is the neighbor nodes

Then, the new pressure field distribution () is used for correcting pressure and velocity by applying the under-relaxation, and this step is the same as it in SIMPLE .
My problem is how to calculate and represents them in OpenFOAM codes.

Thanks!
renyun0511 is offline   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
SIMPLE pressure correction in compressible flows Maarten de Jong Main CFD Forum 7 April 30, 2012 02:23
Strcture of pressure correction equation in PISO stable over time ? sebi Main CFD Forum 1 October 26, 2010 22:19
Pressure correction equation,Ferziger and Peric Hooman Main CFD Forum 1 July 20, 2010 05:21
Pressure Correction Equation Hooman Main CFD Forum 1 June 22, 2010 11:54
what the result is negatif pressure at inlet chong chee nan FLUENT 0 December 29, 2001 06:13


All times are GMT -4. The time now is 07:54.