Setting boundary condition BC on axialsymmetric problem

axpl · April 10, 2007, 03:16

I'm solving a flow in a conical diffuser geometry. What kind of BC I must impose to the axe of symmetry to solve this problem? Is the "empty" BC the right choice?
Thanks,

Alex

cedric_duprat · April 10, 2007, 09:57

Hi Alexandro,
I'm not sure I will give you the solution but, the best way according to me is to avoid the problem.
Meshing your geometry otherwise. I plan to mesh the Clausen 1993 conical diffuser and a buterfly mesh seems to be the easyer way (if you have mesh generator).
I saw that with OF someone put a script to mesh a cylinder, try to start from it ...
Hope it helps

Cedric

axpl · April 19, 2007, 08:28

Thanks Cedric, I'll try a 3D model instead of 2D with axialsymmetric BC.
Alex

April 10, 2007, 03:16	I'm solving a flow in a conica	#1
axpl New Member Alexandro Palmieri Join Date: Mar 2009 Location: Ravenna, Italy Posts: 10 Rep Power: 17	I'm solving a flow in a conical diffuser geometry. What kind of BC I must impose to the axe of symmetry to solve this problem? Is the "empty" BC the right choice? Thanks, Alex

April 10, 2007, 09:57	Hi Alexandro, I'm not sure I	#2
cedric_duprat Senior Member Cedric DUPRAT Join Date: Mar 2009 Location: Nantes, France Posts: 195 Rep Power: 17	Hi Alexandro, I'm not sure I will give you the solution but, the best way according to me is to avoid the problem. Meshing your geometry otherwise. I plan to mesh the Clausen 1993 conical diffuser and a buterfly mesh seems to be the easyer way (if you have mesh generator). I saw that with OF someone put a script to mesh a cylinder, try to start from it ... Hope it helps Cedric

April 19, 2007, 08:28	Thanks Cedric, I'll try a 3D m	#3
axpl New Member Alexandro Palmieri Join Date: Mar 2009 Location: Ravenna, Italy Posts: 10 Rep Power: 17	Thanks Cedric, I'll try a 3D model instead of 2D with axialsymmetric BC. Alex

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Problem setting boundary condition from file	Antonis	CFX	1	September 11, 2006 16:53
Need help setting a boundary condition...	HSeldon	FLUENT	2	August 28, 2006 14:10
UDF for boundary condition setting	Luke	FLUENT	0	June 1, 2006 04:33
setting boundary condition in journal file	Mazyar	FLUENT	1	May 3, 2006 19:08
setting a body force as a boundary condition	blair	CFX	1	April 5, 2003 15:36