Results 21 to 30 of about 945,950 (190)
Experimental Study of the Morphological Evolution of a Reef Island under Regular Waves
Redai dili, 2023 Reef islands are composed of unconsolidated carbonate sediment from the reef that has been organized and deposited on an atoll and platform reef by ocean hydrodynamics.
Zhang Xinyi +3 more
doaj +1 more source
Generalized wave-front reconstruction algorithm applied in a Shack-Hartmann test [PDF]
, 2000 A generalized numerical wave-front reconstruction method is proposed that is suitable for diversified irregular pupil shapes of optical systems to be measured. That is, to make a generalized and regular normal equation set, the test domain is extended to
Zhang, Zhenchao, Zou, Weiyao
core +1 more source
Cylindrical gravitational waves in expanding universes: Models for waves from compact sources [PDF]
, 2007 New boundary conditions are imposed on the familiar cylindrical gravitational wave vacuum spacetimes. The new spacetime family represents cylindrical waves in a flat expanding (Kasner) universe. Space sections are flat and nonconical where the waves have
B. Douglas Edmonds +5 more
core +2 more sources
Spatial Spectrum Analysis of Wave-Front Correction with a Segmented Mirror [PDF]
, 2003 An expression is derived for the spatial power spectrum of wave-front errors after correction with a segmented mirror. This includes estimates of the spectral contributions of segment piston and tilt corrections and spatial aliasing by a regular array of
Padin, Stephen
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CURRENT DEPTH REFRACTION OF REGULAR WAVES
Coastal Engineering Proceedings, 1984 The complete set of equations for the refraction of small surface gravity waves on large-scale currents over a gradually varying sea bed is derived and presented. Wave lengths, direction of propagation and wave heights are all determined along the so-called wave rays as solutions to ordinary, first-order differential equations.
Ivar G. Jonsson, John B. Christoffersen
openaire +2 more sources
Visualization of the Onset of Scour under a Pipeline in Waves
Applied Sciences, 2020 This paper visualizes the onset of scour under a pipeline in regular waves and studies the mechanism in this process. After the test started, the sand particles near the downstream mudline began to oscillate periodically, probably due to the distribution
Yehui Zhu +3 more
doaj +1 more source
Regularity of rotational travelling water waves [PDF]
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2012 Several recent results on the regularity of streamlines beneath a rotational travelling wave, along with the wave profile itself, will be discussed. The survey includes the classical water wave problem in both finite and infinite depth, capillary waves and solitary waves as well.
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Superharmonic instability for regularized long-wave models*
Nonlinearity, 2022 Abstract We examine the spectral stability and instability of periodic traveling waves for regularized long-wave models. Examples include the regularized Boussinesq, Benney–Luke, and Benjamin–Bona–Mahony equations. Of particular interest is a striking new instability phenomenon—spectrum off the imaginary axis extending into infinity. The
Jared C Bronski +2 more
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On the Comparative Seakeeping Analysis of the Full Scale KCS by Several Hydrodynamic Approaches
Journal of Marine Science and Engineering, 2020 The main transport channel of the global economy is represented by shipping. Engineers and hull designers are more preoccupied in ensuring fleet safety, the proper operation of the ships, and, more recently, compliance with International Maritime ...
Florin Pacuraru +2 more
doaj +1 more source
Imaging of Hydrodynamic Field Around Submerged Objects Regular Wave and Tsunami Conditions [PDF]
E3S Web of Conferences, 2023 Hydrodynamic particle movement under regular waves and tsunami wave are rarely studied due to its complicated sensors. This research is aimed at investigating flow fields around submerged structures due to regular waves and tsunami wave.
Arifullah Arifullah +6 more
doaj +1 more source