COMSOL two phase flow with slip boundary condition

AI Thread Summary
COMSOL users are discussing modeling a two-phase flow problem with a slip boundary condition at the interface of two fluids with different properties. There is uncertainty about whether COMSOL offers a built-in slip boundary condition or if custom equations are necessary. The conversation suggests that employing a Level-set or phase function may be required, though the user is unsure how to implement it. A helpful resource, a paper from COMSOL, is shared for further guidance. Engaging with the COMSOL community is also recommended for quicker responses.
pleasemesh
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Hey all,

I am try to model a problem in which one fluid (of known properties) sits on top of another fluid (with different properties) and there is an imposed slip boundary condition at the interface.

I'm wondering if COMSOL has a Slip boundary condition that can be readily used or if I'll have to use the equations to impose one. I have read online that the Level-set/phase function might need to be employed but I'm not completely sure how to use it.

Any insight or comments would be appreciated!
 
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Pleasemesh,
Have you seen this paper: http://www.comsol.com/academic/papers/628/ it may help you.
You can also try asking on the http://www.comsol.com/community where you may get a faster answer.
 
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