Results 31 to 40 of about 730,430 (197)

Subcell Treatment of Sloped Interfaces between Debye Materials in the FDTD Method

open access: yesJournal of Amasya University the Institute of Sciences and Technology, 2020
This paper presents the application of the subcell technique for the treatment of sloped interface in finite-difference time-domain method. The technique is based on the averaging of permittivities in each cell crossed by the material interface.
Kenan Tekbas
doaj  

FDTD Analysis of Electromagnetic Wave Propagation in an Inhomogeneous Ionosphere under Arbitrary-Direction Geomagnetic Field [PDF]

open access: yesJournal of the Korean Institute of Electromagnetic Engineering and Science, 2018
The finite-difference time-domain (FDTD) model was developed to analyze electromagnetic (EM) wave propagation in an inhomogeneous ionosphere. The EM analysis of ionosphere is complicated, owing to various propagation environments that are significantly ...
Jun-Ho Kweon   +3 more
doaj   +1 more source

Application of finite-difference time domain and dynamic differential evolution for inverse scattering of a two-dimensional perfectly conducting cylinder in slab medium [PDF]

open access: yes
[[abstract]]We apply the dynamic differential evolution (DDE) algorithm to solve the inverse scattering problem for which a two-dimensional perfectly conducting cylinder with unknown cross section is buried in a dielectric slab medium.
Sun, Chi-Hsien
core   +1 more source

Simulations of solar cell absorption enhancement using resonant modes of a nanosphere array [PDF]

open access: yes, 2012
We propose an approach for enhancing the absorption of thin-film amorphous silicon solar cells using periodic arrangements of resonant dielectric nanospheres deposited as a continuous film on top of a thin planar cell.
Atwater, Harry A.   +3 more
core   +2 more sources

Finite-difference time-domain simulation of spacetime cloak

open access: yesOptics Express, 2014
In this work, we present a numerical method that remedies the instabilities of the conventional FDTD approach for solving Maxwell's equations in a space-time dependent magneto-electric medium with direct application to the simulation of the recently proposed spacetime cloak.
Cornelius, Jason   +2 more
openaire   +3 more sources

Finite-difference time-domain modelling of photonic crystal structures [PDF]

open access: yesProceedings of 2001 3rd International Conference on Transparent Optical Networks (IEEE Cat. No.01EX488), 2002
The usual, highly efficient, modelling tools for planar optical devices are generally not suitable for modelling photonic crystal structures. For example, the beam propagation method fails when applied to these strongly scattering structures since presumptions are made on the propagation direction of the waves. The finite-difference time-domain method (
de Ridder, René M., Stoffer, Remco
openaire   +2 more sources

Finite-difference time-domain simulation of partial discharges in a gas insulated switchgear

open access: yesHigh Voltage, 2016
It is important to estimate the current magnitude and charge amount of a partial discharge (PD) in a gas-insulated switchgear (GIS). In this study, electromagnetic fields generated by a PD in an 84 kV-class three-phase GIS for testing have been measured ...
Hiroki Tanaka   +6 more
doaj   +1 more source

Electromagnetic modelling of a monolithic pulse reshaper based on a photonic crystal waveguide integrated with a SOA [PDF]

open access: yes, 2006
Finite difference time domain (FDTD) and finite element (FE) frequency domain methods are used to study the propagation of arbitrary chirped pulses in photonic crystal (PhC) waveguide.
Cao, T   +9 more
core   +2 more sources

A multi-domain hybrid method for head-on collision of black holes in particle limit

open access: yes, 2011
A hybrid method is developed based on the spectral and finite-difference methods for solving the inhomogeneous Zerilli equation in time-domain. The developed hybrid method decomposes the domain into the spectral and finite-difference domains.
DEBANANDA CHAKRABORTY   +3 more
core   +1 more source

A novel high accuracy finite-difference time-domain method

open access: yesEarth, Planets and Space
The finite-difference time-domain (FDTD) method is widely used for numerical simulations of electromagnetic waves and acoustic waves. It is known, however, that the Courant condition is restricted in higher dimensions and with higher order differences in
Harune Sekido, Takayuki Umeda
doaj   +1 more source

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