Any measure if I forget a BC definition

wateraction · May 30, 2013, 08:05

Hi，can anyone tell me if I forget defining one surface as outlet in Gambit, can I do something in fluent instead to define the outlet boundary condition?
I have tried to define a surface called "outlet" at the location where the real outlet is, but I can't find it when I open the "boundary conditions" dialogue box.
I don't want to go back to Gambit to do this definition then take a long time to export the mesh, so can anyone help me? Thanks!

oj.bulmer · June 4, 2013, 11:42

In mesh display dialogue box, try clicking all the surfaces one by one, you should get the name of the outlet that FLUENT recognizes.

OJ

ringtail · June 4, 2013, 22:28

Since you cann't find the surface in the boundary conidtions menu, I guess,
you haven't separate these grid cells into a individual part. Right?

You can do this in Fluent by Mesh -> Separate ->Faces..
More details can get from section 5.8.2.1 in Ansys Fluent User's Guide.

wateraction · June 6, 2013, 04:54

Quote:

Originally Posted by oj.bulmer

In mesh display dialogue box, try clicking all the surfaces one by one, you should get the name of the outlet that FLUENT recognizes.

OJ

sorry, it doesn't work, tks all the same.

wateraction · June 6, 2013, 04:56

Quote:

Originally Posted by ringtail

Since you cann't find the surface in the boundary conidtions menu, I guess,
you haven't separate these grid cells into a individual part. Right?

You can do this in Fluent by Mesh -> Separate ->Faces..
More details can get from section 5.8.2.1 in Ansys Fluent User's Guide.

I'll check that out, thank you!

May 30, 2013, 08:05	Any measure if I forget a BC definition	#1
wateraction New Member Joe Join Date: Mar 2009 Posts: 26 Rep Power: 17	Hi，can anyone tell me if I forget defining one surface as outlet in Gambit, can I do something in fluent instead to define the outlet boundary condition? I have tried to define a surface called "outlet" at the location where the real outlet is, but I can't find it when I open the "boundary conditions" dialogue box. I don't want to go back to Gambit to do this definition then take a long time to export the mesh, so can anyone help me? Thanks!

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June 4, 2013, 11:42		#2
oj.bulmer Senior Member OJ Join Date: Apr 2012 Location: United Kindom Posts: 473 Rep Power: 20	In mesh display dialogue box, try clicking all the surfaces one by one, you should get the name of the outlet that FLUENT recognizes. OJ

June 4, 2013, 22:28		#3
ringtail Member Join Date: Dec 2009 Location: China Posts: 79 Rep Power: 16	Since you cann't find the surface in the boundary conidtions menu, I guess, you haven't separate these grid cells into a individual part. Right? You can do this in Fluent by Mesh -> Separate ->Faces.. More details can get from section 5.8.2.1 in Ansys Fluent User's Guide.