Results 21 to 30 of about 20,239 (157)

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

The combined use of adaptive optics and nonlinear optical wavefront reversal techniques to compensate for turbulent distortions when focusing laser radiation on distant objects [PDF]

open access: yesКомпьютерная оптика, 2020
Approaches to constructing a mock-up of a system for focusing laser radiation on distant objects using both adaptive optics elements and nonlinear-optical wavefront reversal methods providing compensation for turbulent distortions are considered ...
V.P. Lukin   +4 more
doaj   +1 more source

THE APPLICATION OF MESHLESS CYLINDER CONTROL SURFACE IN RANKINE-KELVIN HYBRID METHOD

open access: yesBrodogradnja, 2016
The solution of the three-dimensional seakeeping problem with forward speed in the frequency domain still has some well-known problems. In this paper, a Rankine-Kelvin hybrid method benefiting the merits of both the Rankine source and Kelvin source is ...
Hui Li   +3 more
doaj   +1 more source

Méthode intégro-variationnelle appliquée aux probèmes intérieur et extérieur avec surface libre de l'hydrodynamique linéaire Integro-Variational Method Applied to Indoor and Outdoor Problems with a Free Surface of Linear Hydrodinamics

open access: yesOil & Gas Science and Technology, 2006
Le but de cet article est de montrer que l'on peut appliquer une rintégro-variationnelle pour résoudre les problèmes intérieur (comportement)liquide en milieu confiné) et extérieur (diffraction-radiation) de l'hydrodynamique linéaire. Une comparaison des
Berhault C.
doaj   +1 more source

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   +1 more source

Recent Developments in UV Optics for Ultra-Short, Ultra-Intense Coherent Light Sources

open access: yesPhotonics, 2015
With the advent of Free Electron Lasers and general UV ultra-short, ultra-intense sources, optics needed to transport such radiation have evolved significantly to standard UV optics.
Daniele Cocco
doaj   +1 more source

TERAHERTZ CLYNOOROTRON WITH AN AZIMUTHAL COMB [PDF]

open access: yesРадиофизика и электроника, 2017
The results of theoretical and experimental studies of oro-trons – oscillators of diffraction radiation with spatially developed electrodynamic systems, electromagnetic oscillations in which are excited, as a rule, by nonrelativistic spatially developed ...
V. D. Yeryomka   +3 more
doaj   +1 more source

'Seeing' Atoms: The Crystallographic Revolution

open access: yesCHIMIA, 2014
Laue's experiment in 1912 of the diffraction of X-rays by crystals led to one of the most influential discoveries in the history of science: the first determinations of crystal structures, NaCl and diamond in particular, by W. L.
Dieter Schwarzenbach
doaj   +1 more source

Theoretical Analysis of a Vertical Cylindrical Floater in Front of an Orthogonal Breakwater

open access: yesFluids, 2020
This study investigates the effect of an orthogonal-shaped reflecting breakwater on the hydrodynamic characteristics of a vertical cylindrical body. The reflecting walls are placed behind the body, which can be conceived as a floater for wave energy ...
Dimitrios N. Konispoliatis   +1 more
doaj   +1 more source

Existence and Uniqueness of Solutions of Integral Equations for Acoustic Radiation and Diffraction Problems [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1967
Although a radiation or diffraction problem may have a unique solution, certain formulations of the problem may result in integral equations that do not have solutions, or whose solutions are not unique. Typically, when considering the exterior problem, trouble may occur at frequencies corresponding to resonance in the interior of the body.
openaire   +1 more source

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