An improved Jacobi-Davidson algorithm applied to non-Hermitian electromagnetic eigenvalue problems
An implementation of the Jacobi-Davidson method for solving non-Hermitian eigen problems in electromagnetics will be presented. The standard jacobi-Davidson algorithm has been extended to reduce memory requirements and to improve computational speed through the use of a multi-grid approach. Algorithmic details particular to the types of problem typically encountered in design applications will be described, including the capability to handle highly glossy materials and the need for many degrees of freedom to accurately represent an electromagnetic field. The classes of eigenproblem to which this method has been applied include periodic and lossy structures, discretized on both structured and unstructured meshes. Each class of problem will be described, with reference to the particular difficulties that it presents, and examples will be used to demonstrate the effectiveness of this technique as a general eigenfrequency solver.
- Research Organization:
- Naval Research Lab., Washington, DC (US)
- Sponsoring Organization:
- US Department of the Navy, Office of Naval Research (ONR)
- OSTI ID:
- 20034287
- Resource Relation:
- Conference: 1999 IEEE International Conference on Plasma Science, Monterey, CA (US), 06/20/1999--06/24/1999; Other Information: PBD: 1999; Related Information: In: The 26th IEEE international conference on plasma science, 342 pages.
- Country of Publication:
- United States
- Language:
- English
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