Title :
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
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 Condition¿ABC; Computational Electromagnetics; Finite-Volume Time-Domain¿FVTD; Numerical Reflection Coefficient; Perfectly matched layer¿PML;
Conference_Titel :
Microwave Conference, 2006. 36th European
Conference_Location :
Manchester
Print_ISBN :
2-9600551-6-0
DOI :
10.1109/EUMC.2006.281170
