نتایج جستجو برای: fdtd method

تعداد نتایج: 1631043  

2008
Ilkka Laakso Tero Uusitupa

A simple alternative way to position dielectric materials in the finite-difference time-domain (FDTD) Yee cell grid is proposed. Plane-wave illuminated spheres are used as examples to study the performance of the alternative method compared to the standard FDTD method. Although the performances are generally equally good, the alternative method may sometimes give significantly improved accuracy...

2009
Li Zhao

Abslrczc-The 3-dimensional finite-difference time-domain method in non-orthogonal co-ordinates (non-standard FDTD) is used to calculate the frequencies of resonators. The numerical boundary conditions of the method are presented. The influences of boundary conditions and discrete meshes on the numerical accuracy are investigated. We present the nonstandard FDTD method using the boundary-orthogo...

1999
Fenghua Zheng Zhizhang Chen Jiazong Zhang

In this paper, a finite-difference time-domain method that is free of the constraint of the Courant stability condition is presented for solving electromagnetic problems. In it, the alternating direction implicit (ADI) technique is applied in formulating the finite-difference time-domain (FDTD) algorithm. Although the resulting formulations are computationally more complicate than the conventio...

Journal: :Modeling and Analysis of Information Systems 2016

Journal: :DEStech Transactions on Engineering and Technology Research 2019

2010
Xin Wang

This thesis describes an implementation of the discontinuous Galerkin finite element time domain (DGTD) method on unstructured meshes to solve acoustic wave equations in discontinuous media. In oil industry people use finite difference time domain (FDTD) methods to compute solutions of time domain wave equations and simulate seismic surveys, the first step to explore oil and gas in the earth’s ...

2014
Katherine Han Chih-Hung Chang

This paper reviews the current progress in mathematical modeling of anti-reflective subwavelength structures. Methods covered include effective medium theory (EMT), finite-difference time-domain (FDTD), transfer matrix method (TMM), the Fourier modal method (FMM)/rigorous coupled-wave analysis (RCWA) and the finite element method (FEM). Time-based solutions to Maxwell's equations, such as FDTD,...

1997
Frank D. Hastings John B. Schneider Shira L. Broschat

The nite-diierence time-domain (FDTD) method is a numerical technique that makes no explicit physical approximations to the underlying problem. The quality of an FDTD-based solution typically is determined by the discretization of the computational domain|the smaller the spacing, the more accurate the solution. Unfortunately, for large computational domains, i.e., ones spanning many wavelengths...

Journal: :CoRR 2013
A. V. Choudhari N. A. Pande M. R. Gupta

Among several techniques available for solving Computational Electromagnetics (CEM) problems, the Finite Difference Time Domain (FDTD) method is one of the best suited approaches when a parallelized hardware platform is used. In this paper we investigate the feasibility of implementing the FDTD method using the NVIDIA® GT 520, a low cost Graphical Processing Unit (GPU), for solving the differen...

Journal: :IEEE Transactions on Magnetics 2008

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