A sparse matrix open boundary method for finite element analysis

Author

Lowther, D.A. ; Freeman, E.M. ; Forghani, B.

Author_Institution

Infolytica Corp., Montreal, Que., Canada

Volume

25

Issue

4

fYear

1989

fDate

7/1/1989 12:00:00 AM

Firstpage

2810

Lastpage

2812

Abstract

A novel implicit mapping method for handling exterior- and far-field problems is described. The method provides a way of maintaining sparsity. Several boundary methods are compared, and the implicit mapping approach is described in detail. In terms of complexity the proposed method is more expensive than a hybrid or ballooning method, but this cost is offset for many problems by its simplicity and the fact that far-field values are readily available. In addition, the method can be used to extend the range of boundary conditions available in a standard finite-element package to include inhomogeneous Neumann conditions

Keywords

boundary-value problems; electromagnetic field theory; finite element analysis; matrix algebra; exterior field problems; far-field problems; finite element analysis; implicit mapping method; inhomogeneous Neumann conditions; sparse matrix open boundary method; Conductors; Finite element methods; Insulation; Magnetic analysis; Poles and towers; Resistors; Sparse matrices; Stripline; Superconducting magnets; Transmission line matrix methods;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.34292

Filename

34292