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Boundary conditions

Posted 7 mars 2012, 03:39 UTC−5 Fluid & Heat Version 4.2a 0 Replies

Francesca Messina
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Hi all,

I am simulating a flow field in an annulus around a circle.
I would like to insert as boundary condition in the external circle the equation:
(1/r)*d(ur,teta)+r*d(uteta/r,r)=0 (for r = external radius of the annulus)
where r and teta are the cylindrical coordinate (that I have already inserted) and ur and uteta are the velocity component along r and teta.
Is it possible to implement an equation as boundary conditions (in the laminar flow module)?

Thanks a lot,

Francesca
0 Replies Last Post 7 mars 2012, 03:39 UTC−5
COMSOL Moderator

Hello Francesca Messina

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