CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Running, Solving & CFD

Problem understanding rhoPisoFoam

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

LinkBack Thread Tools Display Modes
Old   May 14, 2010, 11:30
Default Problem understanding rhoPisoFoam
New Member
Matthias P
Join Date: May 2010
Posts: 16
Rep Power: 7
MatP is on a distinguished road
Hey i'm a newbie in Openfoam and try to understand the solution scheme of the solver rhoPisoFoam.

On of the first equations to be solved is the continuity equation for density included by rhoEqn.H.

Now my question is what is solved by that equation and why i have to do so. Later on in pEqn.H the same headerfile is included once more. Why?

Maybe somebody can help me understanding this.

Thx Matthias
MatP is offline   Reply With Quote

Old   May 15, 2010, 13:21
Senior Member
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,894
Rep Power: 26
alberto will become famous soon enoughalberto will become famous soon enough
The first time you find an updated density at the new time, based on the old flux (see the flux is not recomputed, but the conservative one at old time is used).

In the pEqn, you find the updated density at the new time using the conserved flux at the current time.

Alberto Passalacqua

GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as live DVD/USB, hard drive image and virtual image.
OpenQBMM - An open-source implementation of quadrature-based moment methods
alberto is offline   Reply With Quote


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
UDF compiling problem Wouter Fluent UDF and Scheme Programming 6 June 6, 2012 04:43
Incoherent problem table in hollow-fiber spinning Gianni FLUENT 0 April 5, 2008 10:33
Adiabatic and Rotating wall (Convection problem) ParodDav CFX 5 April 29, 2007 19:13
convergence problem Trushar Phoenics 5 August 27, 2002 23:40
GAMBIT meshing problem Gauthier Lambert Main CFD Forum 1 August 3, 2000 09:22

All times are GMT -4. The time now is 08:23.