I am simulating flow around a bubble and I need to implement a weak contribution at the bubble surface, the best way to use this weak contribution is to define it using spherical coordinates. However, I only can add the weak contribution in Cartesian coordinates.
So, Does anyone have a clue on this problem ?
Thanks in Advance.
Shiuh-Hwa Shyu
In Definition => Coordinate System, you can choose spherical coordinate system
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Zoubair Boulahia
Use this forum.
https://www.comsol.com/community/forums/general/thread/1/
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Ahmed Mohamed Diaa
Thanks Prof.Shyu and Dr.Boulahia for your answers, however, I know how to define the spherical coordinates system, but the problem I am facing is how to write the weak contribution expression in spherical coordinates.
I have already tried but a problem in solution occurs.
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