Results 11 to 20 of about 893,377 (238)
Kelvin wake pattern at small Froude numbers [PDF]
Journal of Fluid Mechanics, 2021 Abstract
Ravindra Pethiyagoda +3 more
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Negative group velocity and Kelvin-like wake pattern [PDF]
Physical Review B, 2022 5 pages, 2 figures. Modified title and abstract to emphasize general character of discovered effect, minor text changes. Version to be published in Phys.
Eugene B. Kolomeisky +2 more
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Applied SciencesWhen using optical remote sensing methods for Kelvin wake imaging, the imaging is affected by sea-surface stochastic fluctuation, imaging noise, and weak reflectivity contrast, resulting in weak wake image signals.
Mingzhu Song +3 more
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Kelvin wake pattern at large Froude numbers [PDF]
Journal of Fluid Mechanics, 2013 AbstractGravity waves generated by an object moving at constant speed at the water surface form a specific pattern commonly known as the Kelvin wake. It was proved by Lord Kelvin that such a wake is delimited by a constant angle${\simeq }19. 4{7}^{\circ } $.
Darmon, Alexandre +2 more
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Towards eliminating the nonlinear Kelvin wake
Journal of Fluid MechanicsThe nonlinear disturbance caused by either a localised pressure distribution moving at constant speed on the free surface of a liquid of finite depth or a flow over a topographic obstacle, is investigated using (i) the weakly nonlinear forced Kadomtsev–Petviashvili equation which is valid for depth-based Froude numbers near unity and (ii) the fully ...
Jack S. Keeler +2 more
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A GPU-Accelerated Method for 3D Nonlinear Kelvin Ship Wake Patterns Simulation
Applied Sciences, 2023 The study of ship waves is important for ship detection, coastal erosion and wave drag. This paper proposed a highly paralleled numerical computation method for efficiently simulating three-dimensional nonlinear kelvin waves. First, a numerical model for
Xiaofeng Sun, Miaoyu Cai, Junchen Ding
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IEEE Access, 2018 The method for detecting and locating a Kelvin wake in the background of a two-dimensional (2-D), large-scale, random rough sea surface is studied. In this method, the large-scale, 2-D dynamic sea surface is partitioned, the correlation function between ...
Nan Bi, Jiahui Qin, Tao Jiang
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Towards the Kelvin wake and beyond
American Journal of Physics, 2013 The difference between wave propagation in dispersive and non-dispersive media can be effectively demonstrated by observing the wave patterns invoked by uniformly moving surface disturbances. Although the dispersion relation of surface waves on water is complicated, there are some frequency intervals where the phase velocity of the waves reduces to the
Likar, Andrej, Razpet, Nada
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International Journal of Antennas and Propagation, 2016 Based on the polarimetric scattering model of second-order small-slope approximation (SSA-II) with tapered wave incidence for reducing the edge effect caused by limited surface size, monostatic and bistatic polarimetric scattering signatures of two ...
Pengju Yang, Lixin Guo
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Ship Wakes: Kelvin or Mach Angle? [PDF]
Physical Review Letters, 2013 From the analysis of a set of airborne images of ship wakes, we show that the wake angles decrease as U(-1) at large velocities, in a way similar to the Mach cone for supersonic airplanes. This previously unnoticed Mach-like regime is in contradiction with the celebrated Kelvin prediction of a constant angle of 19.47° independent of the ship's speed ...
Rabaud, Marc, Moisy, Frederic
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