Title
Crank-Nicolson finite element discretizations for a two-dimensional linear Schrödinger-type equation posed in a noncylindrical domain
Abstract
Motivated by the paraxial narrow-angle approximation of the Helmholtz equation in domains of variable topography, we consider an initiala- and boundary-value problem for a general Schrodinger-type equation posed on a two space-dimensional noncylindrical domain with mixed boundary conditions. The problem is transformed into an equivalent one posed on a rectangular domain, and we approximate its solution by a Crank-Nicolson finite element method. For the proposed numerical method, we derive an optimal order error estimate in the L-2 norm, and to support the error analysis we prove a global elliptic regularity theorem for complex elliptic boundary value problems with mixed boundary conditions. Results from numerical experiments are presented which verify the optimal order of convergence of the method.
Year
Venue
Keywords
2015
MATHEMATICS OF COMPUTATION
Schrodinger-type equation,noncylindrical domain,Robin-type boundary condition,elliptic regularity,Crank-Nicolson time stepping,finite element method,apriori error estimates,underwater acoustics
Field
DocType
Volume
Mathematical optimization,Mathematical analysis,Schrödinger's cat,Underwater acoustics,Finite element method,Crank–Nicolson method,Mathematics,Computation
Journal
84
Issue
ISSN
Citations 
294
0025-5718
0
PageRank 
References 
Authors
0.34
3
4
Name
Order
Citations
PageRank
D. C. Antonopoulou182.99
Georgia D. Karali222.25
M. Plexousakis3283.48
Georgios E. Zouraris421228.97