Trouble with faces

gman105 · November 29, 2010, 15:44

Hello,

I am a noob trying to figure out a couple of things in Simulation with ANSYS 11.0 and would appreciate any help you guys can offer.

More than likely my problems exist because of my geometry in DesignModeler.

In Simulation I cannot specify interior bc's. If my geometry were thought of as two concentric cylinders, how would I specify a bc on the interior cylinder faces?

Further, in other CFD softwares, this simple cylinder problem would require that the smaller cylinder be "cut" from the larger one and then added in. Does the "add material" option in DM both cut and add material so that, somehow, two different materials will exist in the same location?

Thank you for your time.

Cheers,
Grant

gman105 · November 30, 2010, 13:48

Did I post this question in the wrong forum?

PSYMN · December 1, 2010, 13:12

If you want the inner cylinder to be cut in as a separate volume, you will need to use the option to Add Frozen... This will result in a separate part with faces you can apply bocos to.

If you want the mesh separate, keep the parts separate. If you want the mesh conformal, create a multibody part in DM.

Simon

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gman105 · December 1, 2010, 14:29

Fantastic. Thank you PSYMN. I will look into the "add frozen" option.

November 29, 2010, 15:44	Trouble with faces	#1
gman105 New Member GE Join Date: Nov 2010 Posts: 3 Rep Power: 15	Hello, I am a noob trying to figure out a couple of things in Simulation with ANSYS 11.0 and would appreciate any help you guys can offer. More than likely my problems exist because of my geometry in DesignModeler. In Simulation I cannot specify interior bc's. If my geometry were thought of as two concentric cylinders, how would I specify a bc on the interior cylinder faces? Further, in other CFD softwares, this simple cylinder problem would require that the smaller cylinder be "cut" from the larger one and then added in. Does the "add material" option in DM both cut and add material so that, somehow, two different materials will exist in the same location? Thank you for your time. Cheers, Grant

December 1, 2010, 13:12	Right place, you just need patience with CFD Online...	#3
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	If you want the inner cylinder to be cut in as a separate volume, you will need to use the option to Add Frozen... This will result in a separate part with faces you can apply bocos to. If you want the mesh separate, keep the parts separate. If you want the mesh conformal, create a multibody part in DM. Simon ======================== Please help guide development at ANSYS by filling in these surveys Public ANSYS ICEM CFD Users Survey This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)... CFD Online Users Survey

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November 30, 2010, 13:48		#2
gman105 New Member GE Join Date: Nov 2010 Posts: 3 Rep Power: 15	Did I post this question in the wrong forum?

December 1, 2010, 14:29		#4
gman105 New Member GE Join Date: Nov 2010 Posts: 3 Rep Power: 15	Fantastic. Thank you PSYMN. I will look into the "add frozen" option.