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Finite-difference time-domain modeli...

Yuan, Xiaojuen.

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Finite-difference time-domain modeling of acoustic and electromagnetic wave scattering.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Finite-difference time-domain modeling of acoustic and electromagnetic wave scattering./
Author:	Yuan, Xiaojuen.
Description:	126 p.
Notes:	Source: Dissertation Abstracts International, Volume: 58-03, Section: B, page: 1459.
Contained By:	Dissertation Abstracts International58-03B.
Subject:	Engineering, Electronics and Electrical. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9726214
ISBN:	0591351145

Finite-difference time-domain modeling of acoustic and electromagnetic wave scattering.
Yuan, Xiaojuen.

Finite-difference time-domain modeling of acoustic and electromagnetic wave scattering. - 126 p.

Source: Dissertation Abstracts International, Volume: 58-03, Section: B, page: 1459.

Thesis (Ph.D.)--The University of Utah, 1997.

The finite-difference time-domain method (FDTD) is one of the most powerful numerical methods for both acoustic and electromagnetic simulations. It is also one of the most efficient methods and extremely valuable for parallel computing. This method, however, has not been accurate enough to simulate sonar and radar systems due to the imperfect boundary conditions. Developing high performance absorbing boundary conditions for FDTD simulation is of major interest to many researchers in this field. Recently, a perfectly matched layer (PML) boundary condition was proposed by J. P. Berenger to solve the boundary problem with satisfactory accuracy. Berenger has shown through numerical simulations that his idea works very well for the 2-D TE mode EM wave case. Katz et al. extended this method to 3-D vector EM waves.

ISBN: 0591351145Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Finite-difference time-domain modeling of acoustic and electromagnetic wave scattering.
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100 1 $a Yuan, Xiaojuen. $3 1929730
245 1 0 $a Finite-difference time-domain modeling of acoustic and electromagnetic wave scattering.
300 $a 126 p.
500 $a Source: Dissertation Abstracts International, Volume: 58-03, Section: B, page: 1459.
502 $a Thesis (Ph.D.)--The University of Utah, 1997.
520 $a The finite-difference time-domain method (FDTD) is one of the most powerful numerical methods for both acoustic and electromagnetic simulations. It is also one of the most efficient methods and extremely valuable for parallel computing. This method, however, has not been accurate enough to simulate sonar and radar systems due to the imperfect boundary conditions. Developing high performance absorbing boundary conditions for FDTD simulation is of major interest to many researchers in this field. Recently, a perfectly matched layer (PML) boundary condition was proposed by J. P. Berenger to solve the boundary problem with satisfactory accuracy. Berenger has shown through numerical simulations that his idea works very well for the 2-D TE mode EM wave case. Katz et al. extended this method to 3-D vector EM waves.
520 $a This dissertation focuses on extending and developing the PML boundary conditions for more general applications. Specifically, the PML boundary conditions have been extended to acoustic simulations. A dispersive PML (DPML) boundary condition is developed for matching ambient dispersive media. A state variable approach has also been developed to extend the FDTD method to simulate media with dispersion. The PML idea is also extended to simulate elastic wave propagation and scattering. Numerical simulations have been employed to prove the ideas and methods developed in this research.
590 $a School code: 0240.
650 4 $a Engineering, Electronics and Electrical. $3 626636
650 4 $a Physics, Electricity and Magnetism. $3 1019535
650 4 $a Physics, Acoustics. $3 1019086
690 $a 0544
690 $a 0607
690 $a 0986
710 2 0 $a The University of Utah. $3 1017410
773 0 $t Dissertation Abstracts International $g 58-03B.
790 $a 0240
791 $a Ph.D.
792 $a 1997
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9726214