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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 2017 年 9 月 22 日
閉鎖済み: MATLAB Answer Bot 2021 年 8 月 20 日
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 2017 年 9 月 27 日
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 2017 年 9 月 28 日
The PDE toolbox does not support this type of dependency.
Regards,
Svetlana Pease
Technical writer, MathWorks documentation group

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