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how can i define it

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Old   July 30, 2004, 17:00
Default how can i define it
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a face not wall,fluide is water,this face is open to air,how can i define it ?
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Old   August 6, 2004, 01:43
Default Re: how can i define it
Dan Brzozowski
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You can definate it as a free surface using the "Symmetry" buondary consition. This will set all derivatives gradients equal equal zero normal to the boundary.

Of coure this does not allow for evaportation, surface deforemation, etc

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