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How to define a boundary condition where temperature is a function of temperature gradient?

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Hi, I'm new to Comsol and I'm working on a time dependent model. The temperature distribution along a wall is a function of temperature gradient and also something calculated based on result from previous step. My questions are: 1. Do I use Matlab code to define my boundary condition? How can I extract data of temperature gradient from result of previous step? 2. I need to use some code to calculate something every step. How can I do that in Comsol?

Before I come to Comsol, I tried Ansys Fluent, I can define user-defined-function on both boundary condition and 'Execute at end' section, do we have something like that in Comsol?

Any help will be so much appreciated. Thanks in advance.

Jing


0 Replies Last Post 2018年9月19日 GMT-4 19:09
COMSOL Moderator

Hello Jing Yuan

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