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How to modify the built-in equations in Comsol Multiphysics

Posted Jun 30, 2020, 10:29 p.m. EDT Fluid & Heat, Equation-Based Modeling Version 5.4 1 Reply

Breeze Chen
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Hello everyone,

I want to modify the built-in equations in Comsol Multiphysics, but always encounter problems. For example, I want to add a starting pressure gradient in Darcy's law in Porous Media Module, but the system prompts an error. The lamp is a variable (starting pressure gradient) defined by me, as shown in attached files. Thank you very much.

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1 Reply Last Post Jul 1, 2020, 8:25 a.m. EDT
Alexis Prel
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Posted: 4 years ago Jul 1, 2020, 8:25 a.m. EDT

Hello, What does the error message say?

Hello, What does the error message say?

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