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Solve convective heat transfer problem using moving mesh method
Posted Jan 11, 2010, 11:30 p.m. EST 0 Replies
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I am trying to solve a convective heat transfer problem when a hot droplet is impinging into cold flat substrate. The droplet takes the shape of disk with changing radius R(t) and changing height b(t) (2D axis symmetric). R(t) is a given function of time, thus b(t) can be solved using mass conservation. The velocity field is given by Vr = C*z*r, Vz = -C*z*z, while C can be solved by C = (2/(R*b))*(R'). (R' is derivative of R.)
The velocity field can be solved independently. Since the geometry of the domain is changing, a moving mesh method is used to solve the convective heat transfer problem.
Two things are difficult for me:
1) How to set the coupled coefficient C in COMSOL?
2) How to set the boundary conditions in ALE mode?
Thanks a lot!
Hello Junfeng Xiao
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