How to input crank nicolson into matlab?

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Conrad Suen
Conrad Suen 2016 年 2 月 9 日
回答済み: Bjorn Gustavsson 2016 年 5 月 11 日
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I am at a loss on how to code these to solve in the Crank Nicolson equation. I have solved the equations, but cannot code it into matlab.

回答 (4 件)

Conrad Suen
Conrad Suen 2016 年 2 月 9 日

Conrad Suen
Conrad Suen 2016 年 2 月 9 日
This is the code and errors I am getting.

simopera6
simopera6 2016 年 5 月 11 日
編集済み: simopera6 2016 年 5 月 11 日
Hi Conrad, If you are trying to solve by crank Nicolson method, this is not the way to do it. You have to solve it by tri-diagonal method as there are minimum 3 unknowns for the next time step. There are many videos on YouTube which can explain this. Hope this helps. If you can post a code after doing this, we can have a look at it. Best,

Bjorn Gustavsson
Bjorn Gustavsson 2016 年 5 月 11 日
Crank-Nicolson is for partial differential equations, this seems to be ordinary differential equations. Perhaps try matlabs ode23 et al.
HTH

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