Performance of FDTD Method Cpu Implementations for Simulation of Electromagnetic Processes

Markovich, Dmitry; Ladutenko, Konstantin; Belov, Pavel A.

doi:10.2528/pier13031910

Cited by 6 publications

(5 citation statements)

References 18 publications

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“…By substituting (20) into (15), the modified constitutive relationship of dispersive time-domain can be given as…”

Section: The Conformal Dispersive Fdtd Methodsmentioning

confidence: 99%

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A Dispersive Conformal FDTD Technique for Accurate Modeling Electromagnetic Scattering of THZ Waves by Inhomogeneous Plasma Cylinder Array

Ai¹,

Tian²,

Cui³

et al. 2013

PIER

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Abstract-A dispersive conformal FDTD method has been proposed to accurately model the interface between two adjacent dispersive mediums and implemented to study the scattering of THz electromagnetic (EM) waves by inhomogeneous collisional plasma cylinder array. The method is based on the technology of area average, which is different from existing dispersive conformal FDTD schemes. Numerical results show that the proposed method enhances the accuracy level compared to the staircasing FDTD scheme involved in the inhomogeneous plasma. It is interesting to find that the THz EM waves can propagate through the plasma array more easily with higher frequencies or larger separations, hence the scattering width in the backward direction becomes smaller, and the forward scattering exhibits a little different. This study will be useful for further designing intelligent plasma antenna arrays in the THz band and terahertz reentry telemetry through plasma.

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“…By substituting (20) into (15), the modified constitutive relationship of dispersive time-domain can be given as…”

Section: The Conformal Dispersive Fdtd Methodsmentioning

confidence: 99%

“…The FDTD method [18][19][20] as a powerful and robust tool has been applied in solving various EM problems, including those concerned with frequency dispersive and non-dispersive materials due to its simplicity and accuracy. In order to model plasma materials, the dispersive FDTD method [21][22][23][24][25] should be used.…”

Section: Introductionmentioning

confidence: 99%

A Dispersive Conformal FDTD Technique for Accurate Modeling Electromagnetic Scattering of THZ Waves by Inhomogeneous Plasma Cylinder Array

Ai¹,

Tian²,

Cui³

et al. 2013

PIER

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show abstract

“…If a wave is moving to a boundary in free space, it is traveling by speed of light c 0 in one time step in FDTD. The reason for using PML is its effectiveness and versatility in working with different media [14][15][16][17][18][19].…”

Section: Fdtd In Two Dimensionsmentioning

confidence: 99%

“…It is well remarkable that the propagating wave displays a larger energy loss after certain time step for lower permittivity constant and the loss of energy is reduced with the increase of permittivity constant up to 11, as noticed in Figs. (14)(15)(16). The wave guiding in dielectric materials control the propagation characteristics for electric field distribution in these systems.…”

Section: Wave Guide In 2d Systemsmentioning

confidence: 99%

Untitled

2020

DJNB

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In this study, Finite Difference Time Domain (FDTD) is employed to model and simulate both dielectric materials and metamaterials. Interestingly, the metamaterials own very peculiar characteristics that are related to the simultaneous negative permittivity and permeability. Based on FDTD technique, we can simulate the electromagnetic devices with the inclusion of the simultaneous electric and magnetic fields over time. The striking features of metamaterials illustrate the increase and backward propagation as well as the energy absorption in one-dimensional (1D) or two-dimensional (2D) systems. These systems could have potential applications, such as metamaterial superlens.

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“…The finite-difference-time-domain (FDTD) method and its enhanced methods [1][2][3][4][5][6][7][8] are widely used in modeling electromagnetic problems due to their simpleness in updating equations and easiness in numerical implementation [9][10][11][12][13][14]. Constrained by the Courant-Friedrichs-Lewy (CFL) condition, however, its maximum time step is limited by the minimum cell size, which seriously affects its computational efficiency when fine meshes are required in the object under analysis [15].…”

Section: Introductionmentioning

confidence: 99%

Reduction of Numerical Dispersion of Adi-FDTD Method With Quasi Isotropic Spatial Difference Scheme

Yi-long¹,

Su²,

Liu³

2013

PIER B

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Abstract-In this paper, the difference scheme of the alternatingdirection-implicit finite-difference time-domain (ADI-FDTD) method is replaced by the quasi isotropic (QI) spatial difference scheme to improve its numerical dispersion characteristics. The unconditional stability advantage of QI-ADI-FDTD is analytically proven and numerically verified. The numerical dispersion of the novel method can be dramatically reduced by choosing proper weighting factor. An example is simulated to demonstrate the accuracy and efficiency of the proposed method.

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Performance of FDTD Method Cpu Implementations for Simulation of Electromagnetic Processes

Cited by 6 publications

References 18 publications

A Dispersive Conformal FDTD Technique for Accurate Modeling Electromagnetic Scattering of THZ Waves by Inhomogeneous Plasma Cylinder Array

A Dispersive Conformal FDTD Technique for Accurate Modeling Electromagnetic Scattering of THZ Waves by Inhomogeneous Plasma Cylinder Array

Untitled

Reduction of Numerical Dispersion of Adi-FDTD Method With Quasi Isotropic Spatial Difference Scheme

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