An Introduction to the Locally Corrected Nystrom Method

An Introduction to the Locally Corrected Nystrom Method

Andrew Peterson, Malcolm Bibby
ISBN: 9781608452996 | PDF ISBN: 9781608453009
Copyright © 2009 | 115 Pages | Publication Date: 01/01/2009

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This lecture provides a tutorial introduction to the Nystrom and locally-corrected Nystrom methods when used for the numerical solutions of the common integral equations of two-dimensional electromagnetic fields. These equations exhibit kernel singularities that complicate their numerical solution. Classical and generalized Gaussian quadrature rules are reviewed. The traditional Nystrom method is summarized, and applied to the magnetic field equation for illustration. To obtain high order accuracy in the numerical results, the locally-corrected Nystrom method is developed and applied to both the electric field and magnetic field equations. In the presence of target edges, where current or charge density singularities occur, the method must be extended through the use of appropriate singular basis functions and special quadrature rules. This extension is also described.

Table of Contents

Introduction
Classical Quadrature Rules
The Classical Nystrom Method
The Locally-Corrected Nystrom Method
Generalized Gaussian Quadrature
LCN Treatment of Edge Singularities

About the Author(s)

Andrew Peterson, Georgia Institute of Technology

Malcolm Bibby, Georgia Institute of Technology

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