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I get an error in the example "Convection Cooling of Circuit Boards"
Posted 02.10.2022, 13:05 GMT-4 Heat Transfer, Studies & Solvers Version 5.6 0 Replies
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Hello! I just started to study COMSOL. I found an ideal example that looks like my task https://www.comsol.com/model/convection-cooling-of-circuit-boards-8212-3d-natural-convection-449.
I'm trying to solve a 2D-problem. The default example works, but when I try to change the size of the air area from 12mm by 120mm, I get the following error:
- Feature: Stationary Solver 1 (sol1/s1) Undefined value found.
- Detail: Undefined value found in the equation residual vector. There are 927 degrees of freedom giving NaN/Inf in the vector for the variable comp1.T. at coordinates: (0,0.00892234), (0,0.00777926), (0,0.00654675), (0,0.00516429), (0,0.01), ...
There are 342 degrees of freedom giving NaN/Inf in the vector for the variable comp1.p. at coordinates: (0,0.00892234), (0,0.00777926), (0,0.00654675), (0,0.00516429), (0,0.01), ...
There are 925 degrees of freedom giving NaN/Inf in the vector for the variable comp1.u. at coordinates: (0,0.00892234), (0,0.00777926), (0,0.00654675), (0,0.00516429), (0,0.01), ...
There are 925 degrees of freedom giving NaN/Inf in the vector for the variable comp1.v. at coordinates: (0,0.00892234), (0,0.00777926), (0,0.00654675), (0,0.00516429), (0,0.01), ...
How to fix?
Hello Vladimir Vladimirovich
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