CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Programming & Development

How to add correcting pressure equation in SIMPLE of MRFSimpleFOAM?

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   November 4, 2010, 02:38
Smile How to add correcting pressure equation in SIMPLE of MRFSimpleFOAM?
  #1
Member
 
任芸
Join Date: Jun 2009
Posts: 75
Rep Power: 17
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!

Last edited by renyun0511; November 4, 2010 at 03:45.
renyun0511 is offline   Reply With Quote

Reply


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 Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Calculation of the Governing Equations Mihail CFX 7 September 7, 2014 07:27
SIMPLE_ Pressure Boundary condition at the pipe wall bbasal Main CFD Forum 2 July 30, 2009 15:40
Pressure enigma. Sara Main CFD Forum 22 July 30, 2009 05:46
Pressure correction on SIMPLE Diego Nogueira Main CFD Forum 6 October 10, 2004 15:43
Hydrostatic pressure in 2-phase flow modeling (long) DS & HB Main CFD Forum 0 January 8, 2000 16:00


All times are GMT -4. The time now is 00:31.