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BC at 2-phase interface ?

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Old   July 26, 2001, 03:15
Default BC at 2-phase interface ?
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Hi all. In two-phase flow, (I wanna use modified VOF scheme such like a SURFER, or HRIC ....)

doesn't it need any pressure or velocity boundary conditions at interface ? (It just depends on discretization scheme ?)

reply plz...
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Old   July 26, 2001, 05:32
Default Re: BC at 2-phase interface ?
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You are right, and in SURFER, you have a term which accounts for the capillary force which is realized by a volume fraction.

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Old   July 26, 2001, 11:19
Default Re: BC at 2-phase interface ?
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The interfacial boundary conditions are taken care of within the one-Fluid formulation, with some simplifications of course..

Read: Kataoka (1986) Local Instant Formulation of 2-phase flow. International Journal o

Multiphase flow v12(5)pp745-768

A more of an engineering derivation (from a slightly different approach) can be found in a thesis of W. Sabisch from Karlsruhe. I think their was a paper by him also at the ICMF2001 conference.

I would suggest trying to derive the equations from scratch to really understand where they come from and what exactly their limitations are...

Happy VOFing...
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Old   August 27, 2001, 06:54
Default spray evaporation
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Hi I developed CFD code for spray evaporation and mixing in cylandrical duct . therefor I need experimental data of spray evaporation in duct for validated my coed ,if you have such data please send for me . thank's
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