The Poisson Class

The Poisson class provides an easy way to define and solve the Poisson equation

$\displaystyle -u\hackscore{,ii}=f\; .$

(74)

with homogeneous boundary conditions

$\displaystyle n\hackscore{i}u\hackscore{,i}=0$

(75)

and homogeneous constraints

$\displaystyle u=0$ where $\displaystyle q>0$

(76)

has to be a scalar Data object in the general FunctionSpace and

must be a scalar Data object in the solution FunctionSpace.

$\begin{classdesc}{Poisson}{domain} opens a Poisson equation on the \class{Domain... ...class{Poisson}\xspace is derived from \class{LinearPDE}\xspace . \end{classdesc}$

$\begin{methoddesc}[Poisson]{setValue}{f=escript.Data(),q=escript.Data()} assigns new values to \var{f} and \var{q}. \end{methoddesc}$

esys@esscc.uq.edu.au