Results 11 to 20 of about 25,828 (296)

Solving the complete pseudo-impulsive radiation and diffraction problem using a spectral element method [PDF]

open access: yesComputer Methods in Applied Mechanics and Engineering, 2023
21 pages, 11 ...
Jens Visbech   +2 more
core   +5 more sources

Effects of diffraction and radiation on a submerged sphere

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2001
This paper deals with an investigation of the effects of diffraction and radiation on a submerged sphere in water of finite depth d. We assume that the fluid is homogeneous, inviscid, and incompressible, and the fluid motion is irrotational.
Matiur Rahman
doaj   +2 more sources

On Sommerfeld radiation conditions for the diffraction problem with two unbounded media

open access: yesProceedings of the Royal Society of Edinburgh: Section A Mathematics, 1992
SynopsisA radiation condition is obtained, and is then used together with weighted Sobolev spaces and the limiting absorption method to establish the unique existence of solutions to the diffraction problem for the wave propagation in the case where the propagation speed is piecewise constant, and the surface separating two media is unbounded.
Roach, G. F., Zhang, Bo
openaire   +2 more sources

Automated high-throughput high-resolution X-ray diffraction capabilities at SSRL BL 2-1 [PDF]

open access: yesStructural Dynamics
High quality powder diffraction data from synchrotron radiation sources remain the cornerstone of structural characterization. They provide insights into the structure of materials; revealing subtle local and average structural details that could ...
Sikhumbuzo Masina   +5 more
doaj   +2 more sources

Comparaison des modèles numériques tridimensionnels de diffraction-radiation Comparison of Three-Dimentional Numerical Diffraction-Radiation Models

open access: yesOil & Gas Science and Technology, 2006
Le but de cet article est de présenter le bilan des études effectuées jusqu'à présent sur le problème de la diffraction-radiation. II fait suite au séminaire qui a eu lieu sur ce sujet en avril 1977 à Paris et qui a réuni les principaux chercheurs ...
Susbielles G., Berhault C.
doaj   +2 more sources

Zeptosecond electron pulse train via multiphoton inelastic Cherenkov diffraction [PDF]

open access: yesScientific Reports
High-harmonic generation and ultrafast electron coherent control are central goals in modern strong-field physics. However, the problem of producing and manipulating electron-matter-wave pulses at zeptosecond timescales remains a major challenge. Here we
H. K. Avetissian, G. F. Mkrtchian
doaj   +2 more sources

Solving problems of radiation and diffraction electromagnetic waves based on integral representations electromagnetic field

open access: yesФизика волновых процессов и радиотехнические системы, 2020
Various forms of integral representations of the electromagnetic field are considered. It is shown that the use of analytically developed integral representations of the electromagnetic field instead of the vector potential method makes it possible to ...
Dmitry P. Tabakov, Sergey V. Morozov
doaj   +3 more sources

Peak Performance: Advances in Macromolecular MicroED Data Collection [PDF]

open access: yesStructural Dynamics
High-resolution data and accurate intensity measurements are crucial for resolving detailed structural models in macromolecular electron crystallography.
Max T. B. Clabbers
doaj   +2 more sources

Directional radiation properties of two impedance monopoles mounted on a perfectly conducting rectangular screen [PDF]

open access: yesРадиофизика и электроника, 2021
Subject and Purpose. Two impedance resonant monopoles of electric length 0.2 £ l / l £ 0.3 are mounted on a rectangular screen perpendicularly to the screen surface and studied for the directional radiation properties (directive gain and radiation ...
N.P. Yeliseyeva   +2 more
doaj   +1 more source

Hydrodynamic Analysis of Two Coaxial Moonpool Floaters Using Theoretical Methodologies

open access: yesJournal of Marine Science and Engineering, 2023
The present contribution aims at presenting a semi-analytical solution methodology of the linear hydrodynamic diffraction and radiation problems induced by two coaxial moonpool-type floaters subjected to incident waves. The flow field around the floaters
Anargyros S. Mavrakos   +2 more
doaj   +1 more source

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