Symmetry or Axis B.C ??

L. Hamid · March 13, 2011, 04:07

what is the difference between symmetry and Axis boundary condition? I mean that in the symmetric geometry when we use symmetry or Axis Boundary condition?

azt · March 13, 2011, 06:50

Hi

with a symmetry bc, it is assumed that fluid does not cross the boundary, axis symmetric bc it can.

Think about it as a circular pipe, if the fluid has a swirl or tangential component then one cannot use a symmetric bc you must use axis symmetric.

allan

fipellac · May 20, 2011, 07:27

how can i create an axis bc? i´m not able to import a mesh created in icem into cfx pre where the 2d region axis is present, even if is was created as single part in icem cfd.

any ideas/solutions?

March 13, 2011, 04:07	Symmetry or Axis B.C ??	#1
L. Hamid Member Hamid Join Date: Dec 2010 Location: Iran Posts: 30 Rep Power: 16	what is the difference between symmetry and Axis boundary condition? I mean that in the symmetric geometry when we use symmetry or Axis Boundary condition?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Warning: Symmetry zone should actually be an axis	Gerd	FLUENT	1	August 13, 2021 03:28
regarding axis of symmetry	bunny	FLUENT	0	January 3, 2011 05:19
symmetry b.c	nazari	FLUENT	1	January 13, 2009 02:41
Symmetry B.C. Not Working?	XC	FLUENT	6	November 2, 2007 15:12
SYMMETRY + PERIODIC B.C....I need Help!	JB	FLUENT	6	January 14, 2005 08:03

March 13, 2011, 06:50		#2
azt Member allan thomson Join Date: Mar 2009 Location: scotland Posts: 45 Rep Power: 17	Hi with a symmetry bc, it is assumed that fluid does not cross the boundary, axis symmetric bc it can. Think about it as a circular pipe, if the fluid has a swirl or tangential component then one cannot use a symmetric bc you must use axis symmetric. allan

May 20, 2011, 07:27		#3
fipellac New Member Filippo Pellacani Join Date: Jul 2010 Location: München Posts: 13 Rep Power: 16	how can i create an axis bc? i´m not able to import a mesh created in icem into cfx pre where the 2d region axis is present, even if is was created as single part in icem cfd. any ideas/solutions?