Results 21 to 30 of about 25,828 (296)
Resonant properties of an impedance monopole located on a perfectly conducting rectangular screen [PDF]
Радиофизика и электроника, 2020 Subject and Purpose. A resonant monopole of an electrical length 0.2 £ l / l £ 0.3 mounted on an infinite, perfectly conducting plane or on a rectangular, perfectly conducting screen is considered.
N.P. Yeliseyeva +2 more
doaj +1 more source
An extension of the physical theory of diffraction concept for aperture radiation problems [PDF]
Radio Science, 1994 A correction to the Kirchhoff‐Huygens approximation in the format of a diffraction coefficient is derived for an aperture terminated by a half plane. As in the physical theory of diffraction (PTD), this is achieved by considering the end point contribution to the aperture integral.
Altıntaş, A. +2 more
openaire +2 more sources
Journal of Marine Science and Engineering, 2020 The present paper deals with the analytical evaluation of the hydrodynamic characteristics of an array of vertical axisymmetric bodies of arbitrary shape, placed in front of a reflecting vertical breakwater, which can be conceived as floaters for wave ...
Dimitrios N. Konispoliatis +2 more
doaj +1 more source
Wave Diffraction from a Bicone Conjoined with an Open-Ended Conical Cavity
Applied Sciences, 2023 The problem of axially symmetric TM-wave diffraction from a bicone conjoined with an open-ended conical cavity is analysed rigorously. The scatterer is formed by the perfectly conducting semi-infinite and truncated semi-infinite conical surfaces; the ...
Dozyslav B. Kuryliak +1 more
doaj +1 more source
A WISER way for simulating the performance of gratings
Journal of Synchrotron Radiation, 2022 Soft X-ray monochromators for synchrotron radiation sources have been continuously developed over the years, improving energy resolution and stability.
Michele Manfredda +2 more
doaj +1 more source
Numerical Study on Hydrodynamics of Ships with Forward Speed Based on Nonlinear Steady Wave
Journal of Marine Science and Engineering, 2020 In this paper, an improved potential flow model is proposed for the hydrodynamic analysis of ships advancing in waves. A desingularized Rankine panel method, which has been improved with the added effect of nonlinear steady wave-making (NSWM) flow in ...
Tianlong Mei +3 more
doaj +1 more source
A Coupling between Integral Equations and On-Surface Radiation Conditions for Diffraction Problems by Non Convex Scatterers [PDF]
Mathematics, 2021 The aim of this paper is to introduce an orignal coupling procedure between surface integral equation formulations and on-surface radiation condition (OSRC) methods for solving two-dimensional scattering problems for non convex structures. The key point is that the use of the OSRC introduces a sparse block in the surface operator representation of the ...
Alzahrani, Saleh Mousa +2 more
openaire +3 more sources
Journal of Electronic Science and Technology, 2022 The simulation mechanism of surface plasmon polaritons (SPPs) and localized surface plasmon (LSP) in different structures was studied, including the Au reflection grating (Au grating), Au substrate with dielectric ribbons grating (Au substrate grating ...
Ling-Xi Hu, Min Hu, Sheng-Gang Liu
doaj +1 more source
Effect of Internal Fluid Resonance on the Performance of a Floating OWC Device
한국해양공학회지, 2021 In the present study, the performance of a floating oscillating water column (OWC) device has been studied in regular waves. The OWC model has the shape of a hollow cylinder.
Il Hyoung Cho
doaj +1 more source
DIPOLE ANTENNAS WITH A SECTOR-SHAPED RADIATION PATTERN [PDF]
Radio Physics and Radio AstronomySubject and Purpose. The directivity characteristics of a dipole antenna when it is placed above and parallel to a perfectly conducting screen of rectangular shape are considered, aiming to theoretically study dipole antennas with sector-shaped radiation
M. M. Gorobets +3 more
doaj +1 more source