Split and Unsplit Finite-Volume Absorbers: Formulation and Performance Comparison

Author

Sankaran, Krishnaswamy ; Fumeaux, Christophe ; Vahldieck, Rudiger

Author_Institution

Lab. for Electromagn. Fields & Microwave Electron., ETH Zurich

fYear

2006

fDate

10-15 Sept. 2006

Firstpage

17

Lastpage

20

Abstract

Time-domain models of split and unsplit finite-volume absorbers (FiVA) used as perfectly matched layer (PML) are analyzed in this paper. These models are employed on unstructured meshes in the framework of the finite-volume time-domain (FVTD) method. A systematic comparison with emphasis on the differences in their mathematical construct and dynamic performance is presented. Numerical analysis on the absorber thickness and loss-parameter is carried out to study the limitations of these absorber models. Numerical reflection coefficients in the range of -80 dB are achieved demonstrating the capability of these models

Keywords

computational electromagnetics; electromagnetic wave absorption; finite volume methods; time-domain analysis; absorber models; absorber thickness; absorbing boundary condition; computational electromagnetics; finite-volume time-domain method; loss-parameter; numerical reflection coefficients; perfectly matched layer; split finite-volume absorbers; time-domain models; unsplit finite-volume absorbers; unstructured meshes; Computational electromagnetics; Electromagnetic analysis; Electromagnetic fields; Electromagnetic modeling; Electromagnetic reflection; Laboratories; Numerical analysis; Perfectly matched layers; Performance analysis; Time domain analysis; Absorbing Boundary ConditionÂ¿ABC; Computational Electromagnetics; Finite-Volume Time-DomainÂ¿FVTD; Numerical Reflection Coefficient; Perfectly matched layerÂ¿PML;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2006. 36th European

Conference_Location

Manchester

Print_ISBN

2-9600551-6-0

Type

conf

DOI

10.1109/EUMC.2006.281170

Filename

4057735