Urgent,species gradient problem -- CFD Online Discussion Forums

March 4, 2004, 13:59	Urgent,species gradient problem	#1
zhou Guest Posts: n/a	I got a question. I am trying to calculate gradient of species mass fraction using macro "C_YI_G" in Fluent. However, the value of "C_YI_G" is either zero or not reaonable. I have checked the value of species mass fraction "C_YI" and it is reasonable. So i change to another way to calculate gradient of species mass fraction. First, i transfer value of species mass fraction to a User Defined Scalar (UDS) and then i calculate the gradient of this UDS by macro "C_UDSI_G". Then the gradient result is reasonable. Do you know what is the problem with gradient of species mass fracion "C_YI_G"? Thank you in advance.

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 Forum Rules

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Problem Importing Geometry ProE to CFX	fatb0y	CFX	3	January 14, 2012 20:42
Problem of mass conservation in multispecies flow in porous media and T° gradient	pilou	FLUENT	0	January 31, 2011 09:19
Can I solve this problem by Fluent?	Kai_kc	FLUENT	1	October 27, 2010 06:29
Adiabatic and Rotating wall (Convection problem)	ParodDav	CFX	5	April 29, 2007 20:13
gradient problem	vidhuresh	FLUENT	2	December 12, 2005 11:26

All times are GMT -4. The time now is 15:05.