Results 11 to 20 of about 7,229 (216)

Scattering Evaluation of Equivalent Surface Impedances of Acoustic Metamaterials in Large FDTD Volumes Using RLC Circuit Modelling

open access: yesApplied Sciences, 2021
Most simulations involving metamaterials often require complex physics to be solved through refined meshing grids. However, it can prove challenging to simulate the effect of local physical conditions created by said metamaterials into much wider ...
Eric Ballestero   +6 more
doaj   +1 more source

Using WCS-FDTD Method to Study the Plasma Frequency Selective Surface

open access: yesIEEE Access, 2019
The plasma is very useful to design the dynamically tunable Frequency Selective Surface (FSS) because of its tunable property. But it is difficult to simulate the plasma FSS by using the conventional finite-difference time-domain (FDTD) method, because ...
Juan Chen   +3 more
doaj   +1 more source

Oscillator Finite-Difference Time-Domain (O-FDTD) electric field propagation model: integrated photonics and networks [PDF]

open access: yesEPJ Web of Conferences, 2021
The recently developed Lorentz Oscillator Model-inspired Oscillator Finite-Difference Time-Domain (O-FDTD) is one of the simplest FDTD models ever proposed, using a single field equation for electric field propagation.
Adão Ricardo M. R.   +4 more
doaj   +1 more source

A New Efficient Algorithm for the 2D WLP-FDTD Method Based on Domain Decomposition Technique

open access: yesInternational Journal of Antennas and Propagation, 2016
This letter introduces a new efficient algorithm for the two-dimensional weighted Laguerre polynomials finite difference time-domain (WLP-FDTD) method based on domain decomposition scheme.
Bo-Ao Xu   +4 more
doaj   +1 more source

FDTD Method for Electromagnetic Simulations in Media Described by Time-Fractional Constitutive Relations

open access: yesApplied Sciences, 2023
In this paper, the finite-difference time-domain (FDTD) method is derived for electromagnetic simulations in media described by the time-fractional (TF) constitutive relations.
Piotr Pietruszka   +2 more
doaj   +1 more source

Validation of ERMES 20.0 finite element code for MAST Upgrade O-X mode conversion [PDF]

open access: yesEPJ Web of Conferences
This study presents the validation of the frequency-domain finite element code ERMES 20.0, benchmarked against Finite Difference Time Domain (FDTD) solvers.
Otin Ruben   +4 more
doaj   +1 more source

Finite-Difference Time-Domain (FDTD) Simulation of Novel Terahertz Structures [PDF]

open access: yesINTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY, 2014
Previous work on compact, variable, efficient, high brightness radiation sources is extended by calculating the radiated power and angular distributions for different configurations and drive sources. Figures of merit are defined in terms of efficiencies or effective impedances such as the radiation coupling impedance Zr .Characteristics of ...
Yasser Hussein   +2 more
openaire   +1 more source

Research on karst collapse pillar imaging of water-rich area in coal mine

open access: yesGong-kuang zidonghua, 2019
In order to solve the problem that selection of time step was limited by Courant-Friedrich-Lewy stability condition in current finite-difference time-domain(FDTD) method commonly used in advanced detection transient electromagnetic method of water-rich ...
TIAN Feng, JIAO Cuicui, HAN Xiaobing
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

Investigation of numerical dispersion with time step of the FDTD methods: avoiding erroneous conclusions

open access: yesIET Microwaves, Antennas & Propagation, 2021
To obtain high accuracy and efficiency in the simulations, an optimum time step should be taken in finite‐difference time‐domain (FDTD) methods. The authors investigated how time steps impact on numerical dispersion of two FDTD methods including the FDTD(
Yu Cheng   +3 more
doaj   +1 more source

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