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How to define the normal and tangential component of a variable in boundary condition?
Posted 10 févr. 2018, 20:04 UTC−5 General, Studies & Solvers 0 Replies
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Hello,
I am new to COMSOL and struggling to learn it. I need to solve a problem in 2D using the weak form PDE study.
At the boundary condition stage, I need to assign a condition expressed as:
,
where 
is my variable and 
and 
is my tangential and normal vector respectively, c is a constant.
My question is how to apply these boundary conditions since I do not know how to find the normal and tangential vector of them.
Any help would be appreciate. Thank you.
Hello lauran Zhuang
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