Can we solve ODEs as a nested function while using pdepe?

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Hashim 2022-7-14

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评论： Hashim 2022-7-17

Hi,

I would like to know how to solve ODEs as a nested function or some other way in my pdepe scripts? So lets say this below:

function [c,f,s] = pdex1pde(x,t,u,DuDx)
c = pi^2;
f = DuDx;
s = 0;
end

How do I add a nested function to alter the source s? I know I can do it within the function above as well but I would like to make a more complex function elsewhere and introduce it at s as a sum or subtraction.

Hope I am making some sense.

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Hashim 2022-7-15

编辑：Hashim 2022-7-15

Inputs required to solve the ODE are given within the parent function. And yes I just want a separate function to solve the ODE at the grid point. Then add or subtract that solution from s.

The system of equations is given here. Now I have been able to solve these what I am thinking is if I want to add/subtract another source term I want to be able to do it as a separate nested function within the script.

Torsten 2022-7-15

From pdex1pde, call a function in which you provide the necessary data to solve the ODE, solve the ODE and return the result to pdex1pde. What's the problem ? And where is the ODE in the set of equations you gave the link to ?

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