Title :
Cell-centered finite-volume-based perfectly matched Layer for time-domain Maxwell system
Author :
Sankaran, Krishnaswamy ; Fumeaux, Christophe ; Vahldieck, Rüdiger
Author_Institution :
Lab. for Electromagn. Field Theor. & Microwave Electron., Swiss Fed. Inst. of Technol.-ETH Zurich, Switzerland
fDate :
3/1/2006 12:00:00 AM
Abstract :
The perfectly matched layer (PML) technique is extended for a cell-centered finite-volume time-domain (FVTD) method. A step-by-step procedure for the performance characterization of the FVTD PML is presented for both structured and unstructured finite-volume meshes. The FVTD PML is compared with the standard first-order Silver-Müller absorbing boundary condition (SM ABC) for practical applications. It is found that the FVTD PML for an unstructured grid achieves a reflection coefficient lower than -40 dB for incident angles up to 45° and outperforms the SM ABC by 15-20 dB.
Keywords :
Maxwell equations; computational electromagnetics; electronic engineering computing; finite difference time-domain analysis; finite volume methods; mesh generation; Maxwell equations; Silver-Muller absorbing boundary condition; computational electromagnetics; finite-volume meshes; finite-volume time-domain method; perfectly matched layer technique; Boundary conditions; Computational electromagnetics; Electromagnetic reflection; Electromagnetic scattering; Finite difference methods; Finite element methods; Maxwell equations; Perfectly matched layers; Samarium; Time domain analysis; Absorbing boundary condition (ABC); Maxwell´s equations; computational electromagnetics (CEM); finite volume time domain (FVTD); perfectly matched layer (PML);
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2006.869704
