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

Momentum equation discretization in rhoSimpleFoam

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

LinkBack Thread Tools Display Modes
Old   October 16, 2007, 04:51
Default I've a question about the disc
Michele Vascellari
Join Date: Mar 2009
Posts: 70
Rep Power: 10
mighelone is on a distinguished road
I've a question about the discretization of the momentum equation in the solver rhoSimpleFoam, defined in this way:

fvm::div(phi, U)
- fvm::Sp(fvc::div(phi), U)
+ turbulence->divRhoR(U)

I don't understand the meaning of the second term fvm::Sp(fvc::div(phi),U).

The same equation in the solver rhoTurbFoam is discretized in a different way:

fvm::ddt(rho, U)
+ fvm::div(phi, U)
+ turbulence->divRhoR(U)

Someone can explain me the difference?

Thank you
mighelone 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
Energy equation for VOF, discretization???urgently Asghari FLUENT 0 April 12, 2007 14:27
discretization equation at a corner point (urgent) Sumeet Kumar Main CFD Forum 1 February 16, 2006 10:25
discretization of laplace equation using FVM stein Main CFD Forum 2 November 9, 2005 13:58
Momentum Equation Andrew CFX 1 July 25, 2003 15:38
momentum equation cfp CFX 0 July 8, 2002 04:48

All times are GMT -4. The time now is 11:12.