CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Re: How to add a User-Defined Scalar Transport

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

LinkBack Thread Tools Display Modes
Old   October 22, 2003, 00:58
Default Re: How to add a User-Defined Scalar Transport
li li
Posts: n/a
Dear sirs,

I am trying to add a user-defined scalar transport equation to FLUENT. After I read the examples in the tutorial, I still don't know how to deal with the partial derivative terms in the transport equation.

Could you please show me some simple examples if you have used it before?

Thanks a lot!!

  Reply With Quote

Old   October 22, 2003, 05:58
Default Re: How to add a User-Defined Scalar Transport
Posts: n/a
HI, This derivative part dS will help you to get an implicit calculation of your scalar terms. I would say you should do a first test by setting dS = 0 to check the behaviour of your simulation. If you get some stability troubleshoot you can to express this term. The fact to set dS = 0 won't normally change the final result.

  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
User Defined function for scalar gradient caculation with Star ccm+ V4 coolio Siemens 3 December 21, 2011 18:13
Define bounds of a user defined scalar Philipp_Sch Fluent UDF and Scheme Programming 0 October 11, 2010 08:47
The source of user scalar equation rambol CFX 3 November 14, 2002 08:37
add user scalar in one phase zhu CFX 0 April 27, 2002 03:45
add user scalar and modify pressure btzhu CFX 0 April 11, 2002 22:09

All times are GMT -4. The time now is 06:27.