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

piso algorithm in phaseChange phonomena

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

Reply
 
LinkBack Thread Tools Display Modes
Old   November 18, 2010, 09:58
Default piso algorithm in phaseChange phonomena
  #1
Senior Member
 
Nima Sam
Join Date: Sep 2009
Location: Tehran, Iran
Posts: 1,124
Blog Entries: 1
Rep Power: 14
nimasam is on a distinguished road
Send a message via Yahoo to nimasam
hi dear foamer
for incompressible flow there is no state equation for pressure
so for updating pressure we should derive equation from continuity and momentum equation. so in piso algorithm as ∇ u = 0 use the following equation :

fvScalarMatrix pEqn ( fvm::laplacian(rUA, p) == fvc::div(phi) );

however in phase change phenomena ∇ u = 0 is just globally true but in local ∇ u = source term

so should i change the pressure equation or not ?
nimasam is offline   Reply With Quote

Reply

Tags
phase change, piso, pressure field

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
Is it possible to use PISO algorithm for steady case Gearb0x OpenFOAM Running, Solving & CFD 9 July 15, 2010 00:49
About Phase Coupled SIMPLE (PC-SIMPLE) algorithm Yan Kai FLUENT 0 April 13, 2007 23:17
PISO vs. SIMPLE benedikt flurl Main CFD Forum 2 April 14, 2005 06:54
PISO Algorithm Benedikt Flurl Main CFD Forum 1 March 15, 2005 09:51
Piso algorithm Rooz Main CFD Forum 0 October 6, 2003 09:07


All times are GMT -4. The time now is 21:36.