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RE: Boundary Conditions with Weak Form PDE's

Posted Mar 9, 2020, 9:13 a.m. EDT General, Equation-Based Modeling Version 5.4 1 Reply

Jeff Hiller COMSOL Employee

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Hello Jose,

This blog post shows how to implement a transient diffusion equation in the weak form, including how to handle boundary conditions.

Best regards,

Jeff

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Jeff Hiller
1 Reply Last Post Mar 13, 2020, 6:39 p.m. EDT
Jose Mechanical Engineering
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Posted: 5 years ago Mar 13, 2020, 6:39 p.m. EDT
Updated: 5 years ago Mar 13, 2020, 6:39 p.m. EDT

Hello!

Quick question, when I make the weak form of my PDE, I end up with domain and surface integrals.

Do I input both types of integrals in the same spot? Are the surface integrals like using boundary conditions? If so, can I not put in the surface integrals and use the built in boundary conditions in comsol instead, like Periodic?

I'm attempting to solve a 2D transient diffusion problem.

Thank you for you help!

Hello! Quick question, when I make the weak form of my PDE, I end up with domain and _surface_ integrals. Do I input both types of integrals in the same spot? Are the surface integrals like using boundary conditions? If so, can I not put in the surface integrals and use the built in boundary conditions in comsol instead, like Periodic? I'm attempting to solve a 2D transient diffusion problem. Thank you for you help!

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