Results 111 to 120 of about 2,688 (224)
Domain Decomposition CN-FDTD with Unsplit-Field PML for Time-Reversed Channel Analysis [PDF]
Radioengineering, 2018 In this paper, an efficient domain decomposition (DD) technique is introduced into the implicit Crank-Nicolson finite-difference time-domain (CN-FDTD) method to analyze the channel characteristics of time reversal (TR) waves. As an unconditionally stable
X. K. Wei +3 more
doaj
Perfectly Matched Layer in Cylindrical Coordinates
, 2007 Introduction The introduction of the Perfectly Matched Layer (PML) as an absorbing boundary condition (ABC) by Berenger [1] has spurred much interest. Different authors have proposed extensions and/or re-interpretations of the original idea.
F. L. Teixeira, W. C. Chew
core
Perfectly Matched Layer (PML) for Finite Difference Time Domain (FDTD) Computations in Piezoelectric Crystals [PDF]
, 2005 The Finite-Difference Time-Domain (FDTD) method has become a very powerful tool for the analysis of propagating electromagnetic waves. It involves the discretization of Maxwell's equations in both time and space that leads to a numerical solution of the ...
Chagla, Farid
core
An optimized perfectly matched layer for the Schrödinger equation [Elektronisk resurs]
, 2009 A perfectly matched layer (PML) for the Schrödinger equation using a modal ansatz is presented. We derive approximate error formulas for the modeling error from the outer boundary of the PML and for the error from the discretization and show how these ...
Kreiss, Gunilla,, Nissen, Anna,
core
MathematicsSeismic wave propagation in complex terrains, especially in the presence of air layers, plays a crucial role in accurate subsurface imaging. However, the influence of different boundary conditions on seismic wave propagation characteristics has not been ...
Ying Zhang +3 more
doaj +1 more source
Formulating the perfectly matched layer as a control optimization problem
, 2015 An automated approach to emulate the absorbing properties of a perfectly matched layer (PML) in wave equations is presented. Instead of applying the coordinate stretching to obtain a modified PML wave equation, a feedback boundary controller is ...
Jakubek, Stefan +2 more
core
MathematicsThis study investigates the propagation of shear horizontal transverse waves in a functionally graded piezoelectric half-space (FGPHS), where the material properties vary linearly and quadratically.
Kulandhaivel Hemalatha +6 more
doaj +1 more source
Perfectly matched layer in cylindrical coordinates
, 1997 A cylindrical perfectly matched layer (PML) is developed based on the complex coordinate system approach. By an analytic continuation of the radial coordinate to complex values, the fields can be attenuated in the radial direction with no reflection (in ...
Chew, WC, Teixeira, FL
core
, 1999 In this paper an unsplit anisotropic perfectly matched layer (PML) medium, previously utilized in the context of finite element analysis, is implemented in the finite difference time domain (FDTD) algorithm.
Tong, MS +3 more
core +1 more source
Cell-centered finite-volume-based perfectly matched layer for time-domain maxwell system
, 2006 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 ...
Vahldieck, R. +5 more
core +1 more source