Date: Aug 21, 2013 10:14 AM
Author: Torsten
Subject: Re: Solving PDE (how to introduce an specific Boundary condition)
"alonsovg" wrote in message <kv0tj5$li1$1@newscl01ah.mathworks.com>...

> Hello,

>

> I have some troubles when trying to solve for a second order PDE. Would be wonderful if you can help me.

>

> The PDE I want to solve is the following:

>

> uxx + (2*y^2)*uyy + (1+0.3*x*ux+0.5*(2-y)*uy) = 0.3*u

>

> defined for x>=0 and y>=0

>

> and with boundaries: u(0,y)=0 and ux(y,y)=-1

>

> ( where u denotes the function to solve for u(x,y); ux is the first derivative with respect to x, uy the partial wrt to y, and uxx denote second derivatives).

>

> My first trouble is with the boundary condition: I am using the pde tool, and I don't see how can I implement this boundary condition in the options of Neumann or Dirichlet available.

>

> Thank you!

Impossible to solve with pde toolbox.

Best wishes

Torsten.