Results 31 to 40 of about 156,506 (292)

Wave loadings on a vertical cylinder due to heave motion

International Journal of Mathematics and Mathematical Sciences, 1995
Wave forces and moments due to scattering and radiation for a vertical circular cylinder heaving in water of finite depth are derived analytically. These are derived from the total velocity potential which can be decomposed as two velocity potentials ...
D. D. Bhatta, M. Rahman
doaj   +1 more source

Diffraction radiation from a screen of finite conductivity

, 2010
An exact solution has been found for the problem of diffraction radiation appearing when a charged particle moves perpendicularly to a thin finite screen having arbitrary conductivity and frequency dispersion.
A. A. Tishchenko, A. A. Tishchenko, A. P. Kazantsev, A. P. Potylitsyn, B. M. Bolotovskii, B. M. Bolotovskii, D. V. Karlovets, D. V. Karlovets, D. V. Karlovets, L. D. Landau, V. L. Ginzburg   +10 more
core   +1 more source

Brightness of Synchrotron radiation from Undulators and Bending Magnets [PDF]

, 2014
We consider the maximum of the Wigner distribution (WD) of synchrotron radiation (SR) fields as a possible definition of SR source brightness. Such figure of merit was originally introduced in the SR community by Kim.
Geloni, Gianluca, Kocharyan, Vitali, Saldin, Evgeni   +2 more
core   +1 more source

Application of Laboratory Diffraction Methods in Characterization of Elements Made By Additive SLM Methods – State of the Art

Fatigue of Aircraft Structures, 2021
The greatest challenge of widely developed incremental manufacturing methods today is to obtain, as a result of the manufacturing process, such components that will have acceptable strength properties from the point of view of a given application.
Gadalińska Elżbieta, Pawliszak Łukasz, Moneta Grzegorz   +2 more
doaj   +1 more source

THE METHOD OF DETERMINING THE DIELECTRIC RELATIVE PERMITTIVITY IN THE MM AND SUBMM WAVELENGTH RANGES BASED ON THE MEASURING OF THE PLASMON-POLARITONE RESONANCE PARAMETERS [PDF]

Radio Physics and Radio Astronomy, 2020
Purpose: The purpose of the work is to develop a new method for determining the complex dielectric permeability of dielectrics in mm and submm wavelength ranges.
L. N. Lytvynenko, V. V. Myshenko, V. V. Bortsov, V. M. Lisachenko, O. V. Polikarpov, V. K. Gavrikov, I. S. Spevak   +6 more
doaj   +1 more source

Dependence of volume FEL (VFEL) threshold conditions on undulator parameters [PDF]

, 2001
The idea and principles of volume free electron lasers were proposed in [1-4]. It was shown there that volume distributed feedback (VDFB) can essentially reduce the threshold current of generation and provide the possibility of smooth frequency tuning ...
Baryshevsky, Baryshevsky, Ginzburg, K. Batrakov, Marshall, V. Baryshevsky   +5 more
core   +2 more sources

PROSPECTS OF THE USE OF GRADIENT GRATES IN THE LASERS OF TERAHERTZ RANGE [PDF]

Radio Physics and Radio Astronomy, 2018
Purpose: The improvement and development of terahertz radiation sources is required for the further development of the terahertz frequency range. Submillimeter lasers are one of the few sources of terahertz radiation.
M. I. Dzyubenko, V. A. Maslov, E. N. Odarenko, V. P. Radionov   +3 more
doaj   +1 more source

Hydrodynamic Behavior of a Submerged Spheroid in Close Proximity to the Sea Surface

Journal of Marine Science and Engineering
The principal objective of this investigation is to assess the hydrodynamic characteristics and the exciting forces induced by waves acting upon a shallowly submerged spheroid.
Anargyros S. Mavrakos, Dimitrios N. Konispoliatis, Spyridon A. Mavrakos   +2 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

Oil & 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

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

Brodogradnja, 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 , Lizhu Hao, Huilong Ren , Bo Tian   +3 more
doaj   +1 more source