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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 le 22 Sep 2017
Clôturé : MATLAB Answer Bot le 20 Août 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 le 27 Sep 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 le 28 Sep 2017
The PDE toolbox does not support this type of dependency.
Regards,
Svetlana Pease
Technical writer, MathWorks documentation group

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