poisolv - Fast solution of Poisson's equation on rectangular grid
Syntax
u=poisolv(b,p,e,t,f)
Description
u=poisolv(b,p,e,t,f) solves
Poisson's equation with Dirichlet boundary conditions on a regular
rectangular grid. A combination of sine transforms and tridiagonal
solutions is used for increased performance.
The boundary conditions b must specify Dirichlet
conditions for all boundary points.
The mesh p, e, and t must
be a regular rectangular grid. For details on the mesh data representation,
see initmesh.
f gives the right-hand side of Poisson's
equation.
Apart from roundoff errors, the result should be the same as u=assempde(b,p,e,t,1,0,f).
Reference
Strang, Gilbert, Introduction to Applied Mathematics,
Wellesley-Cambridge Press, Cambridge, MA, 1986, pp. 453–458.
See Also
| poicalc | Partial Differential Equation Toolbox |
| poimesh | Partial Differential Equation Toolbox |
 | poimesh | | refinemesh |  |
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