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Coordinate transform

Posted 11 juil. 2012, 14:20 UTC−4 Version 4.3 0 Replies

Negin Kananizadeh
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Hi all,

I really need to solve my problem. I asked my question before; however, I didn't receive any response. I want to do the surface integration. I need to do this integration in r direction. But the only component that are in comsol are x, y and z. So I defined the spherical coordinates as sys.2.
Is there any way that I can implement this new coordinate? I want to determine dc/dr. How can I get this from dc/dx or dc/dy or dc/dz?
In the insert expression or add expression there are coordinate transform to sys2 ( which is the spherical coordinate), but I don't know what are this expression means? Please help me . I really appreciate it.

Thanks,

Negin
0 Replies Last Post 11 juil. 2012, 14:20 UTC−4
COMSOL Moderator

Hello Negin Kananizadeh

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