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

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Jean-Francois Georgin 2017-9-22

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https://ww2.mathworks.cn/matlabcentral/answers/357860-how-can-we-consider-time-derivatives-in-the-source-f-coefficient-in-the-pdetool-system-method

关闭： MATLAB Answer Bot 2021-8-20

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 2017-9-27

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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