Accession Number:

ADA402564

Title:

Electromagnetic Scattering

Descriptive Note:

Final progress rept. 1 Apr 1999-30 Nov 2001

Corporate Author:

MINNESOTA UNIV MINNEAPOLIS SCHOOL OF MATHEMATICS

Personal Author(s):

Report Date:

2001-11-30

Pagination or Media Count:

11.0

Abstract:

The problems and techniques addressed under the present contract deal with issues of analysis and computation in electromagnetics. The primary goal consists of the development of efficient numerical tools for the prediction of scattered fields in a number of practical configurations. For this, substantial effort will be devoted to the extension and enhancement 0 the Method of Variation of Boundaries MVB. Specific objectives in connection with MVB include 1 advancement and implementation of algorithmic improvements for very high-order calculations 2 application to the solution of eigenvalue problems related to cavities, resonators and waveguides to the calculation of electromagnetic scattering from damaged objects and rough terrain and to inverse scattering problems. 3 Concurrent with these endeavors the program will pursue the incorporation of the boundary-variation approach in more classical computational techniques, such as the finite-element methods FEM. A first instance of such interactions will be sought through the implementation of high-order boundary perturbation approximations to computational radiation conditions typically imposed on separable geometries. To enable and enhance such applications, the plan includes the development of new high-order discontinuous Galerkin DG finite element approach to electromagnetic scattering calculations which is expected to provide an advantageous setting for adaptivity and parallelization. Alternative high-order methods e.g., based on integral equation formulations will also be considered.

Subject Categories:

  • Numerical Mathematics
  • Electricity and Magnetism
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE