Results 11 to 20 of about 76,854 (243)

Frequency‐dependent finite‐difference time‐domain method based on iterated Crank–Nicolson scheme

open access: yesElectronics Letters, 2023
The finite‐difference time‐domain (FDTD) method based on the iterated Crank–Nicolson (ICN) scheme is extended to a frequency‐dependent version. The Drude model is used to express a metal dispersion, which is incorporated into the iterated Crank–Nicolson ...
Jun Shibayama   +3 more
doaj   +1 more source

A Finite-Difference Time-Domain Formulation for Modeling Air Ionization Breakdown Streamers

open access: yesJournal of Microwaves, Optoelectronics and Electromagnetic Applications, 2022
A numerical model based on the finite-difference timedomain (FDTD) method is developed for calculating discharge currents and fields produced due air ionization between two electrodes. Electric conductivity σ of the ionized channel between two electrodes
Rodrigo M. S. de Oliveira   +4 more
doaj   +1 more source

Finite-Difference Time-Domain Simulations of Radon Transport in Porous Media

open access: yesAtom Indonesia, 2020
In this work, an efficient algorithm, using a finite-difference time-domain (FDTD) technique, is proposed for modeling the variation of radon concentration as a function of soil structure parameters and vice versa.
A. Tayebi   +3 more
doaj   +1 more source

Modeling Dispersive Media in Finite-Difference Time-Domain Method for Radiative Cooling Applications

open access: yesIEEE Access, 2022
Radiative cooling offers a new strategy to address building cooling problems in an environmentally friendly way, compared with traditional cooling methods that require high-power consumption. The goal of radiative cooling is to maximize absorption at the
Munseong Bae, Haejun Chung
doaj   +1 more source

Dry band formation mechanism of composite insulator with generalized finite difference-time domain

open access: yes电力工程技术, 2022
The pollution flashover of composite insulators is mainly the flashover caused by alternate occurrence of arc development and dry band formation. At present, researchers have investigated the development of insulator arc along the surface.
HE Jiahong, DONG Bowen, HE Kang
doaj   +1 more source

Numerical study on extinction performance of Ag nanoparticles@ SiO2 ellipsoid

open access: yesJournal of Materials Research and Technology, 2020
A new composite nanostructure, placing two circle Ag nanoparticles (NPs) on the surface of a SiO2 ellipsoid nanoparticle (abbreviated as AgNPs@SE), was established to analyze the extinction spectra using finite-difference time-domain (FDTD) method.
Jing Liu   +4 more
doaj   +1 more source

A Subcell Finite-Difference Time-Domain Implementation for Narrow Slots on Conductive Panels

open access: yesApplied Sciences, 2023
Efficiently modeling thin features using the finite-difference time-domain (FDTD) method involves a considerable reduction in the spatial mesh size. However, in real-world scenarios, such reductions can lead to unaffordable memory and CPU requirements ...
Miguel Ruiz Cabello   +7 more
doaj   +1 more source

Explicit FDTD method based on iterated Crank–Nicolson scheme

open access: yesElectronics Letters, 2022
An implicit Crank–Nicolson procedure can be replaced with an explicit iteration process. An explicit finite‐difference time‐domain method based on the iterated Crank–Nicolson scheme that has been widely used for solving Einstein's equations is newly ...
Jun Shibayama   +3 more
doaj   +1 more source

Exploiting graph neural networks to perform finite-difference time-domain based optical simulations

open access: yesAPL Photonics, 2023
Having an artificial neural network that solves Maxwell’s equations in a general setting is an intellectual challenge and a great utility. Recently, there have been multiple successful attempts to use artificial neural networks to predict electromagnetic
L. Kuhn, T. Repän, C. Rockstuhl
doaj   +1 more source

Non-standard and Numerov finite difference schemes for finite difference time domain method to solve one-dimensional Schrödinger equation

open access: yesJournal of Physics: Theories and Applications, 2018
The purpose of  this paper is to show some improvements of the finite-difference time domain (FDTD) method using Numerov and non-standard finite difference (NSFD) schemes for solving the one-dimensional Schrödinger equation.
Lily Maysari Angraini, I Wayan Sudiarta
doaj   +1 more source

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