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conditions in ALE boundary conditions

Posted Jun 20, 2011, 5:06 p.m. EDT 1 Reply

Olga Sergienko
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Hello there,

does anybody know how to make conditional boundary conditions in ALE (sorry for tautology). Specifically, I have a freely deforming boundary in ALE which velocity is determined by a solution of Navier-Stokes equations. By definition of my problem, this free boundary should always be positive. At some point in time, the location of that boundary becomes negative. I was wondering whether anybody knows how to impose a condition that it stays positive.

Thanks in advance
1 Reply Last Post Jul 13, 2011, 6:34 a.m. EDT
sindhuja r
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Posted: 1 decade ago Jul 13, 2011, 6:34 a.m. EDT
A simple if condition ,like move the boundary only if position has a positive value at that point, might work.
A simple if condition ,like move the boundary only if position has a positive value at that point, might work.

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