Outflow B.C. and CFX

ashtonJ · November 26, 2010, 03:32

Dear all

I want to know how I can apply "outflow" boundary condition (a bounder condition in Fluent) in CFX. Someone else asked this question before but anybody has not given a clear answer to this equation. Please let me know if anybody knows how.

Regards
Ashtonj

ghorrocks · November 27, 2010, 05:35

What is the Fluent "outflow" boundary?

ashtonJ · November 27, 2010, 19:37

Dear Ghorrocks

In Fluent, there is an option for outlet boundary condition named "outflow" which means:

A zero diffusion flux for all flow variables.
An overall mass balance correction.

Regards

ghorrocks · November 27, 2010, 20:51

This is the same as a CFX outlet, or opening if you wish to allow back flow.

November 26, 2010, 03:32	Outflow B.C. and CFX	#1
ashtonJ Senior Member Ashkan Javadzadegan Join Date: Sep 2010 Posts: 248 Rep Power: 9	Dear all I want to know how I can apply "outflow" boundary condition (a bounder condition in Fluent) in CFX. Someone else asked this question before but anybody has not given a clear answer to this equation. Please let me know if anybody knows how. Regards Ashtonj

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November 27, 2010, 05:35		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 13,738 Rep Power: 106	What is the Fluent "outflow" boundary?

November 27, 2010, 19:37		#3
ashtonJ Senior Member Ashkan Javadzadegan Join Date: Sep 2010 Posts: 248 Rep Power: 9	Dear Ghorrocks In Fluent, there is an option for outlet boundary condition named "outflow" which means: A zero diffusion flux for all flow variables. An overall mass balance correction. Regards

November 27, 2010, 20:51		#4
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 13,738 Rep Power: 106	This is the same as a CFX outlet, or opening if you wish to allow back flow.