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Dirichlet and Neumann Boundary Condition on a boundary

Posted 24 feb 2021, 12:40 GMT-5 Electromagnetics, General 2 Replies

Umesh Shahdadpuri
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I have to solve laplace equation in 2D domain (rectangle 0< x < a , 0 <y <b)

I need to enter the boundary condition on one side of rectangle i.e. going from (0,0) to (a,0)

On this line I want to enter mix boundary condition i.e. if (x<d1) V = V_o

else if (d1< x <d2) n.(del V) = 0

else V = V_o

Can someone help how I can enter this mixed boundary condition on one boundary?

2 Replies Last Post 21 mar 2021, 03:51 GMT-4
Jeff Hiller COMSOL Employee

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Posted: 4 years ago 24 feb 2021, 13:18 GMT-5

Hello Umesh,

Assuming that d1 and d2 are known quantities, I would split that bottom boundary into three by adding points at d1 and d2. See attached file.

Best,

Jeff

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Jeff Hiller
Hello Umesh, Assuming that d1 and d2 are known quantities, I would split that bottom boundary into three by adding points at d1 and d2. See attached file. Best, Jeff

Attachments:

Umesh Shahdadpuri
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Posted: 4 years ago 21 mar 2021, 03:51 GMT-4
Updated: 4 years ago 21 mar 2021, 04:24 GMT-4

Hello Jeff,

Thank you very much.

Regards! Umesh

Hello Jeff, Thank you very much. Regards! Umesh

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