Results 31 to 40 of about 7,310 (213)

Newmark-FDTD Formulation for Modified Lorentz Dispersive Medium and Its Equivalence to Auxiliary Differential Equation-FDTD with Bilinear Transformation

open access: yesInternational Journal of Antennas and Propagation, 2019
The finite-difference time-domain (FDTD) method has been popularly utilized to analyze the electromagnetic (EM) wave propagation in dispersive media. Various dispersion models were introduced to consider the frequency-dependent permittivity, including ...
Hongjin Choi   +3 more
doaj   +1 more source

Efficient Finite-Difference Time-Domain Modeling of Time-Varying Dusty Plasma [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2022
The finite-difference time-domain (FDTD) method has been widely used for the electromagnetic analysis of dusty plasma sheath in reentering hypersonic vehicles.
Yong-Jin Kim   +2 more
doaj   +1 more source

On the convergence and accuracy of the FDTD method for nanoplasmonics

open access: yesOptics Express, 2015
Use of the Finite-Difference Time-Domain (FDTD) method to model nanoplasmonic structures continues to rise - more than 2700 papers have been published in 2014 on FDTD simulations of surface plasmons. However, a comprehensive study on the convergence and accuracy of the method for nanoplasmonic structures has yet to be reported.
Antonino Calà Lesina   +3 more
openaire   +3 more sources

Local Explosion Detection and Infrasound Localization by Reverse Time Migration Using 3-D Finite-Difference Wave Propagation

open access: yesFrontiers in Earth Science, 2021
Infrasound data are routinely used to detect and locate volcanic and other explosions, using both arrays and single sensor networks. However, at local distances (<15 km) topography often complicates acoustic propagation, resulting in inaccurate ...
David Fee   +10 more
doaj   +1 more source

Optimized 3D Finite-Difference-Time-Domain Algorithm to Model the Plasmonic Properties of Metal Nanoparticles with Near-Unity Accuracy

open access: yesChemosensors, 2021
The finite difference time domain (FDTD) method is a grid-based, robust, and straightforward method to model the optical properties of metal nanoparticles (MNPs).
Mehran Rafiee   +3 more
doaj   +1 more source

A linear bicharacteristic FDTD method [PDF]

open access: yesIEEE Antennas and Propagation Society International Symposium. 2001 Digest. Held in conjunction with: USNC/URSI National Radio Science Meeting (Cat. No.01CH37229), 2002
The linear bicharacteristic scheme (LBS) is a classical leapfrog algorithm, but is combined with upwind bias in the spatial derivatives. This approach preserves the time-reversibility of the leapfrog algorithm, which results in no dissipation, and it permits more flexibility by the ability to adopt a characteristic based method.
openaire   +1 more source

Novel Time-Domain Electromagnetic Simulation Using Triangular Meshes by Applying Space Curvature

open access: yesIEEE Open Journal of Antennas and Propagation, 2020
A novel stable, accurate and fast numerical method based on triangular meshing and space transformations for electrodynamics problems with arbitrary boundaries is developed.
M. R. Kazemzadeh   +2 more
doaj   +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

A MLP Based FDTD Method

open access: yesJournal of Computer and Communications, 2020
In this paper, we proposed a novel multilayer perceptron (MLP) based Finite-Difference Time-Domain (FDTD) method to reduce the time complexity of the conventional FDTD method, MLP neural networks can be used to replace the field quantities update equations and we found that in certain scenario, we can greatly reduce the time complexity of FDTD method.
Shuangyang Li   +4 more
openaire   +2 more sources

The application of improved FDTD algorithm based on mode-matching in shielding cavity

open access: yesMATEC Web of Conferences, 2018
Due to the increasing complexity of the electromagnetic environment, the cavity with apertures are used more and more widely in electromagnetic shielding.
Gao Xuelian, Kong Lingli
doaj   +1 more source

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