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

HELP!How to define this kind of inlet concentration in transient solver?

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

LinkBack Thread Tools Display Modes
Old   December 25, 2012, 23:19
Default HELP!How to define this kind of inlet concentration in transient solver?
New Member
Yang Xiaoguang
Join Date: Apr 2009
Posts: 24
Rep Power: 10
legendyxg is on a distinguished road
Dear all,

I run a transient simulation of species transport, and the concentration of each species at the flow inlet should be prescribed according to the following relation:

dc_in/dt = A*(c_out - c_in),

where A is a constant, c_in and c_out are the average values of concentration at the inlet and outlet boundary. How to write this kind of relation (dc_in/dt = ...) in UDF?

Thand you very much!

legendyxg 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
ATTENTION! Reliability problems in CFX 5.7 Joseph CFX 14 April 20, 2010 15:45
Free surface boudary conditions with SOLA-VOF Fan Main CFD Forum 10 September 9, 2006 12:24
contaminant concentration in inlet Juan Phoenics 1 February 10, 2006 14:41
compressible two phase flow in CFX4.4 youngan CFX 0 July 1, 2003 23:32
CFX 5.5 Roued CFX 1 October 2, 2001 16:49

All times are GMT -4. The time now is 22:46.