Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 47 for “"breaking waves"”.
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Simulating breaking waves using smoothed particle hydrodynamics
… of fluid 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 …
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Laboratory measurements of deep water breaking waves
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1986.
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Laboratory measurements of three-dimensional breaking waves
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
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A laboratory study of three-dimensional breaking waves
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1995.
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Spray Aerosols From Saltwater to Freshwater Breaking Waves
… sea spray aerosols (SSAs) generation by oceanic breaking waves continues to be an active research area, lake spray aerosols (LSAs) production by freshwater breaking waves is an emerging research field. Recent studies have linked LSAs to regional cloud processes and the aerosolization of …
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Laboratory measurements of the sound generated by breaking waves
Breaking waves dissipate energy, transfer momentum from the wind to surface currents and breaking enhances the transfer of gas and mass across the air-sea interface. Breaking waves are believed to be the dominant source of sea surface sound at frequencies greater than 500 Hz and the presence of …
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An experimental study of air entrainment by breaking waves
Breaking waves charge the surface layer of the ocean with small air bubbles which play an important role in air-sea gas transfer and in underwater acoustics near the ocean surface. This work reports on a series of laboratory and field experiments on the measurement on air entrainment by breaking …
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An experimental study of air entrainment by breaking waves
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1993.
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Numerical Modelling of Breaking Waves under the Influence of Wind
Wave breaking plays an important role in air-sea interaction, surf zone dynamics, nearshore sediment transport, marine hydrodynamics, and wave-structure interaction. When the wind is blowing over water waves, it not only enhances the exchanges of heat, mass and momentum on the air-water interface, …
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Effects of reflected waves on energy dissipation in breaking waves
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1999.
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Bubble characteristics from breaking waves in fresh water and simulated seawater
The appearance of bubbles was determined in three different wind wave facilities utilizing an optical bright field technique. Based on the bubble detection algorithm by W. Mischler [20], an algorithm has been developed by means of which bubbles and their sizes can be detected automatically. The …
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Numerical Investigation of breaking waves and their interations with structures using MLPG_R method
… in 2D cases without the occurrence of the breaking waves. In this thesis, MLPG_R method has been further developed to numerically simulate breaking waves and the interactions between breaking waves and structures in 2D and 3D cases. The main difference between this meshless method and …
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Numerical investigation of breaking waves and their interactions with structures using MLPG_R method
… in 2D cases without the occurrence of the breaking waves. In this thesis, MLPG_R method has been further developed to numerically simulate breaking waves and the interactions between breaking waves and structures in 2D and 3D cases. The main difference between this meshless method and …
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Quantitative imaging of the air-water flow fields formed by unsteady breaking waves
… fields on the air and water side of unsteady breaking waves is presented. The method is applied to breaking waves to investigate the physics of the air and water flow fields to further our knowledge of the impact of wave breaking on air-sea interaction. The method includes a novel technique …
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Experimental investigation of small-scale breaking waves : flow visualization across the air-water interface
The dynamics of breaking waves significantly affect air-sea fluxes of heat, momentum, mass and energy across the ocean interface. Breaking waves also contribute considerable loading to offshore and coastal structures, and furthermore, the quasi-steady bow wave on a ship increases drag and ease of …
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Detecting Breaking Waves and Measuring Bore Speeds in Optical Surf Zone Imagery using Machine Learning
… learning algorithm is developed to detect breaking waves in optical remote sensing data collected under visually diverse conditions along a kilometer-scale beach in Duck, NC. Bore speeds are estimated from the breaking-wave detections and are compared with theoretical models using surveyed …
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The effect of fluid acceleration on sediment transport in the surf zone
The surf zone is defined by highly non-linear, breaking waves that have very different acceleration signatures beneath their respective crests and troughs. The consequences of this dissimilarity on sediment transport is not fully understood. This thesis develops methodologies to predict sediment …
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Cross-shore transformation of breaking random waves in the surfzone
The transformation of breaking waves in the surfzone, including the evolution of the roller, the foamy air-water mixture on the surface of a breaking wave, and the turbulence, determines the wave-driven onshore-directed mass transport, the vertical structure of the compensating return flow …
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Cross-shore Transformation of Breaking Random Waves in the Surfzone
The transformation of breaking waves in the surfzone, including the evolution of the roller, the foamy air-water mixture on the surface of a breaking wave, and the turbulence, determines the wave-driven onshore-directed mass transport, the vertical structure of the compensating return flow …
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Analysis of acoustic communication channel characterization data in the surf zone
… acoustic transmission in very shallow water and breaking waves. In analyzing the data, several questions arose. The majority of the acoustic channel probe data was corrupted by crosstalk in the receiver array cable. This thesis investigates methods to correct for the effects of the crosstalk, to …
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