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Additional variable BC (CFX-5.7.1)

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Old   July 11, 2005, 09:06
Default Additional variable BC (CFX-5.7.1)
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Hi, Is it possible to make an additional variable disappear from a fluid domain as soon as it gets in contact with the top boundary of my domain. No fluid must escape the domain, hence I actually want it to work like the degassing boundary in two-phase flow, except this is a single phase flow with the inclusion of transport of an additional variable. The particalur boundary would be either a symmetri boundary or a free-slip wall.

Is this possible? /Jesper
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