Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4967392 | Journal of Computational Physics | 2017 | 16 Pages |
Abstract
Scattering from large, open cavity structures is of importance in a variety of electromagnetic applications. In this paper, we propose a new well conditioned integral equation for scattering from general open cavities embedded in an infinite, perfectly conducting half-space. The integral representation permits the stable evaluation of both the electric and magnetic field, even in the low-frequency regime, using the continuity equation in a post-processing step. We establish existence and uniqueness results, and demonstrate the performance of the scheme in the cavity-of-revolution case. High-order accuracy is obtained using a Nyström discretization with generalized Gaussian quadratures.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
Jun Lai, Leslie Greengard, Michael O'Neil,