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How can we consider time derivatives in the source f coefficient in the pdetool system method?

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Jean-Francois Georgin
Jean-Francois Georgin el 22 de Sept. de 2017
Cerrada: MATLAB Answer Bot el 20 de Ag. de 2021
I use pdetool in 2D to solve a partiel differentiel a set of equations (4 equations). But I have to introduce in the f coefficient (fcoeffunction(region,state)) corresponding to one solution component a term which depends on the time derivative of another solution component. But state.ut(i,:) doesn't exist a priori.
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Vaidyanathan Thiagarajan
Vaidyanathan Thiagarajan el 27 de Sept. de 2017
Can you please be more specific? What is the system of PDE that you are trying to solve? Can you please explicitly state the equations? I believe you are trying to solve a non-linear equation - is that right?

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Svetlana Pease
Svetlana Pease el 28 de Sept. de 2017
The PDE toolbox does not support this type of dependency.
Regards,
Svetlana Pease
Technical writer, MathWorks documentation group

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