Using PDE Mode in COMSOL to Model Temperature Change

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Using the PDE mode in COMSOL Multiphysics allows users to model temperature changes effectively. The discussion centers on modeling a copper piece transitioning from 6 Kelvin to 300 Kelvin and verifying results against custom equations. Users encounter challenges with boundary conditions and errors related to zero matrices. Identifying the source of the zero matrix error is crucial for successful modeling. Understanding how to input equations and set boundary conditions is essential for accurate simulations in COMSOL.
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Hi everyone,

Can anyone explain how to use the PDE mode in COMSOL Multiphysics? I used the heat transfer package to model a piece of copper undergoing a change in temperature from 6 Kelvin to 300 Kelvin. Now I want to check to see that I can get the same results with my own equations. I don't even know how I would set the boundaries conditions.
 
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Hi everyone,

I kind of figured out where to input my simple equation, but I keep getting an error due to a zero matrix. How do I find where this zero matrix is located?
 

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