Partial Differential Equation Toolbox
显示 更早的评论
Help please, I need to solve this differential equation 
in Matlab (where "a" is a constant parameter, it can be taken by any), I wanted to use the Partial Differential Equation Toolbox, but I ran into a problem, the elliptic equation in this Toolbox is represented in a vector form, namely -div(c*grad(u))+a*u=f.
in Matlab (where "a" is a constant parameter, it can be taken by any), I wanted to use the Partial Differential Equation Toolbox, but I ran into a problem, the elliptic equation in this Toolbox is represented in a vector form, namely -div(c*grad(u))+a*u=f.Please help me convert my equation to this form and tell me how it can be done or at least name the sources of information from which I can learn this knowledge.
I really need to solve this equation in Matlab,so please tell me how it can be done.
2 个评论
Torsten
2019-4-1
What is the domain where you want to solve the equation and what are the boundary and initial conditions ?
Dmitrij Soldatenko
2019-4-2
采纳的回答
Take
c = [- x, x - y ; - ( x - y ), - y]
Then
-div(c*grad(u)) = x * d^2u/dx^2 + y * d^2u/dy^2
Section 2-62 in
http://www.cmap.polytechnique.fr/~jingrebeccali/frenchvietnammaster2_files/2017/pdetool_doc
2 个评论
Dmitrij Soldatenko
2019-4-3
Bosnian Kingdom
2019-6-2
Can you put you code here or can you send me on e-mail or private message? I really need example of pde solution.
Thanks in advance.
更多回答（0 个）
类别
在 帮助中心 和 File Exchange 中查找有关 Electromagnetics 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
