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Problem with BC on non-overlapping grid interface

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Old   August 29, 2006, 10:21
Default Problem with BC on non-overlapping grid interface
Ori Levin
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I am using grid interfaces in order to create nice meshes. However, when ever I end up with a non-overlapping part of one interface surface that should be a wall, I am not able to get a no-slip boundary condition.

When defining grid interfaces, new surfaces "wall-XX" corresponding to the non-overlapping regions are created (if no non-overlapping region, they are simply empty). As I understand it, those new surfaces should take care of the boundary condition as you wish to have. But even though I keep the default condition of a no-slip wall I get slip conditions at these "interface walls".

What should I do to receive no-slip boundary conditions at these non-overlapping interfaces? To further help you to help me, I have prepared a home page with some figures and the Gambit and Fluent files for a small example problem located at:

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Old   August 29, 2006, 18:32
Default Re: Problem with BC on non-overlapping grid interf
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Hi Ori,

Check out the viscosity of the fluid and the speed at which it is flowing near the area of concern. Boundary layers depend on these issues as well.


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