boundary condition

sinatahmooresi · December 5, 2015, 01:56

Hi! why I cant see the boundary condition correctly in ansys fluent. I made boundary conditions contains : wall, inlet and symmetry in gambit. but I just have wall and interior default in ansys boundary conditions zone box . I cant see the inlet or symmetry for example. why ?

shereez234 · December 6, 2015, 15:31

if you see the names of parts, then why don't you change them in fluent? it will be the same.

LuckyTran · December 7, 2015, 15:35

This is a gambit issue and not a Fluent issue. It also happens for many other softwares as well. The problem is that the meshing utility doesn't properly setup the .msh file correctly. Behavior is also wildly different for 2D vs. 3D.

If you can at least confirm that all your boundaries are present, it's best to just re-name them in Fluent and not bother with trying to define/declare them in the meshing utility. A frequent problem is that a boundary surface (which is a wall/surface basically) gets imported into Fluent as an interior (a volume), and that is probably the most annoying issue to run into.

December 5, 2015, 01:56	boundary condition	#1
sinatahmooresi Senior Member CFD_Lovers Join Date: Mar 2015 Posts: 168 Rep Power: 11	Hi! why I cant see the boundary condition correctly in ansys fluent. I made boundary conditions contains : wall, inlet and symmetry in gambit. but I just have wall and interior default in ansys boundary conditions zone box . I cant see the inlet or symmetry for example. why ?

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December 6, 2015, 15:31		#2
shereez234 Senior Member M Sereez Join Date: Jan 2014 Location: England Posts: 352 Blog Entries: 1 Rep Power: 13	if you see the names of parts, then why don't you change them in fluent? it will be the same.

December 7, 2015, 15:35		#3
LuckyTran Senior Member Lucky Join Date: Apr 2011 Location: Orlando, FL USA Posts: 5,668 Rep Power: 65	This is a gambit issue and not a Fluent issue. It also happens for many other softwares as well. The problem is that the meshing utility doesn't properly setup the .msh file correctly. Behavior is also wildly different for 2D vs. 3D. If you can at least confirm that all your boundaries are present, it's best to just re-name them in Fluent and not bother with trying to define/declare them in the meshing utility. A frequent problem is that a boundary surface (which is a wall/surface basically) gets imported into Fluent as an interior (a volume), and that is probably the most annoying issue to run into.