Title
Legendre Gauss Spectral Collocation for the Helmholtz Equation on a Rectangle
Abstract
A spectral collocation method with collocation at the Legendre Gauss points is discussed for solving the Helmholtz equation -?u+?(x,y)u=f(x,y) on a rectangle with the solution u subject to inhomogeneous Robin boundary conditions. The convergence analysis of the method is given in the case of u satisfying Dirichlet boundary conditions. A matrix decomposition algorithm is developed for the solution of the collocation problem in the case the coefficient ?(x,y) is a constant. This algorithm is then used in conjunction with the preconditioned conjugate gradient method for the solution of the spectral collocation problem with the variable coefficient ?(x,y).
Year
DOI
Venue
2004
10.1023/B:NUMA.0000040056.52424.49
Numerical Algorithms
Keywords
DocType
Volume
Helmholtz equation,boundary conditions,spectral collocation,Legendre Gauss points,error bound,matrix decomposition,eigenvalue problem
Journal
36
Issue
ISSN
Citations 
3
1017-1398
9
PageRank 
References 
Authors
0.85
4
2
Name
Order
Citations
PageRank
Bernard Bialecki111418.61
Andreas Karageorghis220447.54