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Integration over a domain

Posted Mar 3, 2023, 10:07 a.m. EST Version 6.1 3 Replies

Lucky Ugochukwu Adoh
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How do i write an expression for intergation over a domain in comsol. I am trying to compute the load carry capacity of a collar in Comsol. the LCC is the integral of the pressure over the domain.

3 Replies Last Post Mar 6, 2023, 1:49 a.m. EST
Andrii Grytsan COMSOL Employee

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Posted: 2 years ago Mar 3, 2023, 10:29 a.m. EST

Hello,

I suppose you are after Definitions->Nonlocal Couplings -> Integration https://doc.comsol.com/6.1/docserver/#!/com.comsol.help.comsol/comsol_ref_definitions.20.086.html

Hello, I suppose you are after Definitions->Nonlocal Couplings -> Integration https://doc.comsol.com/6.1/docserver/#!/com.comsol.help.comsol/comsol_ref_definitions.20.086.html
Lucky Ugochukwu Adoh
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Posted: 2 years ago Mar 5, 2023, 3:29 p.m. EST

Thank you for your response. But how do i incoporate pressure term in the integration.

LCC= integral (P)dxdy

Thank you for your response. But how do i incoporate pressure term in the integration. LCC= integral (P)*dx*dy
Andrii Grytsan COMSOL Employee

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Posted: 2 years ago Mar 6, 2023, 1:49 a.m. EST

Say that you have defined integration intop1 over a domain. You can then use an expression intop1(P) to define a variable or to use in Results section for evaluation (Global Evaluation)

Say that you have defined integration intop1 over a domain. You can then use an expression intop1(P) to define a variable or to use in Results section for evaluation (Global Evaluation)

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