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Rotating boundary in fluid flow problem
Posted 02.02.2019, 08:59 GMT-5 Fluid & Heat, Computational Fluid Dynamics (CFD), Parameters, Variables, & Functions Version 4.0a 0 Replies
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Hi,
I am quite new to Comsol and am trying to model the stationary fluid flow around a rotating circle within a rectangle. I'm a bit unsure of how to speicfiy the rotating boundary condition upon the internal circle. I've tried defining the angular velcoity as two parameters and speicifying this as the boundary velocity; U_x = -(sqrt(x^2+y^2)RPMsin(atand(y/x))) U_y = (sqrt(x^2+y^2)RPMcos(atand(y/x))) Any help is much apperciated.
Thanks, Dónal
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Hello Donal Murphy
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