Research on absorbing boundary condition in FDTD method

Li, Ting; Liu, Ce; Guo, Chen; Zhang, Yong

doi:10.1109/iccsnt.2012.6526220

Cited by 2 publications

(1 citation statement)

References 6 publications

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“…For comparison, MoM is a frequency-domain approach that necessitates separate operations for every individual frequency, rendering it unsuitable for the analysis of problems involving broad bandwidths or nonlinearity. In contrast, FDTD handles open-region problems in a more natural manner, and infnite-wave propagation can be modeled efectively by employing absorbing boundary conditions [18]. Moreover, while FDTD demands a denser mesh to deal with the details, its meshing procedure is comparatively uncomplicated.…”

Section: Introductionmentioning

confidence: 99%

Composite Electromagnetic Scattering Characteristics of Actual Terrain and Moving Rockets

Peng,

Ren,

Guo

et al. 2024

International Journal of Antennas and Propagation

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This research involved studying the characteristics of composite electromagnetic scattering from a rocket moving above actual terrain using the finite-difference time-domain method. The angular distribution curve of the composite scattering coefficient was obtained, and the influences of factors such as the angle of incidence, the frequency of the incident electromagnetic wave, the content of moisture in soil, the dielectric constant of the rocket-shell material, the height of the rocket, and the undulation of the terrain on the composite scattering coefficient were investigated. Results show that the composite scattering coefficient oscillates with the scattering angle and increases in the direction of mirror reflection. It also decreases with increasing angle of incidence, frequency of the incident wave, and altitude of the rocket, while it increases with increasing soil moisture and dielectric constant of the rocket-shell materials. Although the influence of different terrain undulations on the composite scattering coefficient is noticeable, it follows no fixed pattern.

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Section: Introductionmentioning

confidence: 99%

Composite Electromagnetic Scattering Characteristics of Actual Terrain and Moving Rockets

Peng,

Ren,

Guo

et al. 2024

International Journal of Antennas and Propagation

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CBETor: a hybrid-kinetic particle-in-cell code for cross-beam energy transfer simulation

Jiao¹,

Wang²,

Zhou³

et al. 2022

Plasma Sci. Technol.

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The parametric instability related to ion motion and the resulting cross beam energy transfer are important contents in the physics of inertial confinement fusion. The numerical simulation of the above physical problems still faces great technical challenges. This paper introduces a twodimensional hybrid-kinetic particle-in-cell (PIC) code: CBETor. In this code, the motion of ions is described by the kinetic method, the motion of electrons is described by the simplified fluid method, and the propagation of laser in plasma is described by solving the wave equation. We use CBETor and the popular fully-kinetic PIC code EPOCH to simulate the stimulated Brillouin scattering and cross beam energy transfer process respectively. The physical images are in good agreement, but CBETor can significantly reduce the amount of calculation. On the premise of correctly simulate the ion dynamics, our hybrid-kinetic code can effectively suppress the noise of numerical simulation and significantly expand the simulation scale of physical problems. CBETor is very suitable for simulating the physical process dominated by ion motion in the interaction of medium intensity laser and underdense plasma.

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Research on absorbing boundary condition in FDTD method

Cited by 2 publications

References 6 publications

Composite Electromagnetic Scattering Characteristics of Actual Terrain and Moving Rockets

Composite Electromagnetic Scattering Characteristics of Actual Terrain and Moving Rockets

CBETor: a hybrid-kinetic particle-in-cell code for cross-beam energy transfer simulation

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