CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT > Fluent UDF and Scheme Programming

source term units - poission equation

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

LinkBack Thread Tools Search this Thread Display Modes
Old   June 6, 2011, 00:53
Unhappy source term units - poission equation
Join Date: Nov 2010
Posts: 50
Rep Power: 15
johnwinter is on a distinguished road
Hi All,

I am solving negative ion conc equation (UDSI -0) and potential difference equation (UDSI-1). I have a problem in UDSI-1 source term.
The equation is => del^2(phi) = (e/epsilon)*UDSI-0
the units are => Volt/m^2 = Volt-m*(ions)
to make units consistent i devided RHS with C_VOLUME(c,t) hence it beocmes Volt/m^2 = Volt/m^2
but when i devide with cell volume UDSI-1 is diverging.
Could you please help me with this problem.

Last edited by johnwinter; June 6, 2011 at 03:18.
johnwinter is offline   Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
add source term to energy equation by udf tomas Fluent UDF and Scheme Programming 7 September 10, 2013 02:08
Is it possible to use divergence in the source term of an scalar transport equation? jannnesss CFX 0 January 8, 2010 19:53
DecomposePar links against liblamso0 with OpenMPI jens_klostermann OpenFOAM Bugs 11 June 28, 2007 17:51
Source term in the mass balance equation Mehdi BEN HAJ Phoenics 0 January 31, 2007 16:30
How to add a source term in u or v equation? luckyluke Phoenics 3 December 13, 2004 02:52

All times are GMT -4. The time now is 02:35.