PDE Model Boundary Conditions

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Patrick Frey
Patrick Frey on 29 Feb 2024
Commented: Patrick Frey on 1 Mar 2024
Hi Everyone,
I have a question regarding the Matlab PDE Model Boundary Conditions.
Currently, I am working with a 2D mesh with heatflux on one egdes. This egdes has 9 nodes. When I looked at state.u I recognized that this is a 1x12 array. But why?

Answers (1)

Torsten on 29 Feb 2024
Edited: Torsten on 29 Feb 2024
If you output state.x and state.y in the function, you can see to which evaluation points state.u belongs.
Torsten on 1 Mar 2024
If you use a heatflux condition, the temperatures at the boundary are not known in advance. I'm not sure how the PDE Toolbox approximates the temperatures in the node points. Maybe with some helper points to approximate dT/dn in the node points ?
But if you need this information reliably, you should contact MATLAB support.
Patrick Frey
Patrick Frey on 1 Mar 2024
Thank you very much for your help

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