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Showing 1 to 20 of 35 for “"wave tank"”.
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Evanescent Wave Reduction Using a Segmented Wavemaker in a Two Dimensional Wave Tank
Evanescent waves are created by the wavemaking process during tank testing. They have long been a nuisance for engineers as they contaminate the wave field in the tank and result in additional inertial force experienced by a wavemaker. Evanescent waves are created by the mismatch between the motion …
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Hydrodynamic Design Optimization and Wave Tank Testing of Self-Reacting Two-Body Wave Energy Converter
… renewable energy sources. The total available wave energy resource for the United States alone is 2,640 TWh/yr; nearly two thirds of the 4,000 TWh of electricity used in the United States each year. It is estimated that nearly half of that available energy is recoverable through wave energy …
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An experimental investigation into the most prominent sources of uncertainty in wave tank testing of floating offshore wind turbines
… Floating offshore wind platforms must undergo wave tank testing in the early stages of development to assess model responses to different wave and wind conditions. Wave tank testing, while highly beneficial, is liable to errors arising throughout the testing campaign. Errors can arise during …
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Wind wave tank for experimental investigation of momentum and enthalpy transfer from the ocean surface at high wind speed
… performed on the high seas. Therefore, a wind wave tank has been constructed in which a few aspects of a tropical storm are simulated. The air velocity inside the annular tank is comparable to that of hurricane. However, the three dimensionality of the tank obscures the quantitative comparison …
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I. Regular and chaotic motions in a wave tank, II, interactions between a free surface and a shed vortex sheet
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1992.
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Generation of Very Long Waves in Laboratory for Tsunamis Research
… of tsunamis which point out that use of solitary waves as model tsunami is not theoretically justified. In order to generate very long waves in laboratory, a bottom-tilting wave maker is designed and used at the University of Dundee. This new type of wave maker can produce waves longer than the …
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Linear and nonlinear parametric hydrodynamic models for wave energy converters identified from recorded data
Ocean waves represent an important resource of renewable energy, which can provide a significant support to the development of more sustainable energy solutions and to the reduction ofCO2 emissions. The amount of extracted energy from the ocean waves can be increased by optimizing the geometry and …
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Quantifying the effects of boat wakes on intertidal oyster reefs in a shallow estuary
… experiments at Florida Institute of Technology's wave tank to observe sediment erosion and oyster movement as a result of specific wake heights. Model selection was used for both the field and wave tank experiments to determine which variables contributed most to explaining the wake heights, …
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DYNAMICS OF A SUBMERSIBLE MUSSEL RAFT
… of a submersible mussel raft were analyzed using wave tank testing, numerical modeling, and full-scale field tests. When submerged, the raft’s pontoons are flooded, and it is held vertically by lines attached to surface floats and horizontally by a spread mooring. This submerged configuration is …
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Extração de parâmetros de ondas superficiais aquáticas empregando processamento de imagens ópticas
… of estimating the period and height of regular waves, represented by the digital processing of sequences of images. The brightness of the image is a major factor in the present study. One of the main motivations is to come up with a low cost method to measure waves, since this two cameras. The …
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Laboratory scale experiments with water surface waves
… small scale, for the study of surface gravity waves. A number of measurement techniques are developed and implemented to capture space and time evolution of waves on a water surface in gravity, gravity-capillary and capillary ranges with the purpose to study the statistics of wave turbulence in …
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An experimental investigation of the variation with water depth of lift or drag coefficients of a body on or near the bottom of a flowing stream
… use of the facilities of the Rice University wave tank. Two types of models were employed in this study, an upright flat plate attached to the bottom and a cylinder with a clearance of ,12 diameters above the bottom. The results of the tests indicate that the drag coefficient increases as the …
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Simulating breaking waves using smoothed particle hydrodynamics
… motion in the surf zone (such as under breaking waves) is difficult, because model domains must be long and narrow, and very high resolutions are required to obtain sufficiently detailed simulations. Existing modelling methods have deficiencies: one class of methods are restricted to simulating …
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Design of paired column semisubmersible hull
… bending and twisting behaviour from extreme wave conditions). Prior to this, a preliminary CFD model was developed in to understand the vortex shedding effect on the arrayed columns. An experimental setup was also put together to understand this motion behaviour, alongside a detailed review …
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Experimental investigation of internal tide generation by two-dimensional topography using synthetic Schlieren
… for the effects of viscosity in the propagating wave beams. The experiment set up comprised a wave-tank with a linear salt-water stratification and a sliding stage on which the topography oscillated horizontally to simulate tidal flow. The wave field was measured by capturing the distortion of a …
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UCT SHARC Buoy V3.0: Waves-in-ice measurement in the Antarctic MIZ
… been developed to collect and measure in situ wave data that characterises the interaction between ocean waves and sea ice. It aims to do this accurately and with a platform that is cost-effective enough to deploy at scale. To achieve this, the use of low-cost inertial measurement units (IMUs) …
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Internal tide generation by tall ocean ridges
Internal tides are internal waves of tidal period generated by tidal currents flowing over submarine topography. Tall ridges that are nominally two-dimensional (2-D) are sites of particularly strong generation. The subsequent dissipation of internal tides contributes to ocean mixing, thereby …
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Experimental study of internal gravity waves over a slope
… laboratory experiments were conducted in a glass wave tank to investigate the propagation of internal gravity waves up a sloping bottom in a fluid with constant Brunt-Vaisala frequency. Measurements of the wave motion in the fluid interior were primarily taken with electrical conductivity probes; …
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Broadband acoustical scattering in coastal environments: application to gelatinous organisms
… organisms is developed based on the Distorted Wave Born Approximation. The 3-D model is applied to a species of scyphomedusa and verified withlaboratory measurements of broadband backscattering from live individuals. The model predicts backscattering levels and broad spectral behavior within <2 …
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Forces on cylinders in relative fluid motion
… and that of monochromatic surf act- water waves incident upon a vertical surface piercing cylinder. The complicating effects of cylinder surface roughness and freestream turbulence are also considered. Detailed investigation of an oscillating cylinder experiment carried out by the author, …
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