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## Re: Solving PDE; novice question

**From**: |
Ivan Sutoris |

**Subject**: |
Re: Solving PDE; novice question |

**Date**: |
Wed, 15 Apr 2009 00:18:26 +0200 |

On Tue, Apr 14, 2009 at 6:58 AM, John B. Thoo <address@hidden> wrote:
>* Hello, everyone.*
>
>* I've had Octave loaded on my PowerBook for a long time (v. 2.1.73)*
>* and have used it *very* lightly for very simple things, mostly to*
>* obtain simple plots. Now I have a good reason to upgrade Octave and*
>* learn to use it better: I need to solve a PDE. Henry Mollet sent me*
>* instructions on upgrading to v. 3.x some time ago and I've kept those*
>* instructions, so I can upgrade. (Thanks, Henry!) :-)*
>
>* Now my questions. The questions are about Octave, but please note*
>* that I don't have any experience with numerics or coding at all, so*
>* please be gentle.*
>
>* 1) Can Octave be used to solve an equation like this:*
>
>* u_{tt}(x,t) - C * u_{xx}(x,t)*
>* = B * \int_{-infty}^{+\infty} K(x-y,y) * u(x-y,t) * u(y,t) dy,*
>
>* where B, C are constants and K is some kernel.*
>
>* 2) If the answer is yes, then where should I look in the*
>* documentation (or elsewhere) to learn (in baby steps) how to solve*
>* such an equation eventually? (I think one good step along the way,*
>* after some initial baby steps solving some baby equations, would be*
>* to solve the inviscid Burgers equation:*
>
>* u_t + u*u_x = 0, u = u(x,t).)*
>
>* Thanks for your help.*
>
>* ---John.*
I'm not expert on PDE's, but I think Octave itself does not have
specific function for PDE solving, and I don't see such package at
Octave-Forge either. I've discovered some finite element code for
Octave on the web [1], [2] , but haven't tried it myself.
[1] FEMOCTAVE: http://ideas.repec.org/c/cod/octave/c090801.html
[2] OctMesh: http://octmesh.forja.rediris.es/
Regards
Ivan Sutoris