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 18 of 18 for “"hydrokinetic"”.
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Modeling and simulation of hydrokinetic composite turbine system
… to other available renewable energy resources. Hydrokinetic turbine systems are advantageous over traditional dam based hydropower systems due to "zero-head" and mobility. The objective of this study is to design and analyze hydrokinetic composite turbine system in operation. Fatigue study and …
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Numerical Analysis of an Axial Flow Horizontal Axis Marine Hydrokinetic Turbine
Tidal energy extraction using marine hydrokinetic devices has become an important area of research in the renewable energy field in recent years because of the highly predictable nature of the tides. Due to its early stage of development, many studies need yet to be done before deployment of these …
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Extended Momentum Model for Single and Multiple Hydrokinetic Turbines in Subcritical Flows
… experimental data of a high-solidity cross-flow hydrokinetic turbine that was previously tested at increasing rotor speeds. Turbine arrays are investigated by integrating the previous turbine model with wake sub-models to predict the plant layout maximizing the array power. An assessment of …
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Design and Modelization of a Vertical-Axis Hydrokinetic Turbine for Low Flow Velocities
Esta tesis aborda el diseño y caracterización de una pequeña turbina hidrocinética de eje vertical para bajas velocidades de flujo. El perfil del álabe, la solidez y la relación de aspecto del modelo de turbina se han seleccionado buscando un funcionamiento autoarrancable y eficiente. El modelo de …
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Design, build and test of an axial flow hydrokinetic turbine with fatigue analysis
… predictions of OpenProp for axial flow hydrokinetic turbines, a test fixture was designed and constructed, and a model scale turbine was tested. Tests were conducted in the MIT water tunnel for tip speed ratios ranging from 1.55 to 7.73. Additional code was also written and added to …
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Development of an experimental framework for hydrodynamic characterization of hydrokinetic turbines in laboratory facilities
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-02-04 without embargo terms
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Evaluation of four rugged long-term velocity measurement methods for assessment of hydrokinetic energy production
… confidence interval of the power production from hydrokinetic turbines at potential river sites. This novel measurement buoy measures flow velocities inferred from the tilt angle of the buoy using an inertial measurement unit sensor, tension on the wire rope connecting the buoy to the riverbed …
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Impact of water wheel hydrokinetic unit spacing on hydraulic conditions in a rectangular canal under mild slope subcritical flow with physical modeling
Hydrokinetics in inland waterways has seen increased interest in recent decades as a source of renewable energy. Unlike traditional hydropower, which uses potential energy from the static head of a reservoir, hydrokinetics uses the kinetic energy from flowing water (e.g., wave tides, streams, …
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Tension-Leg Platform for Offshore Diffusor-AugmentedHydrokinetic Turbine
… design and optimization of a diffuser-augmented hydrokinetic turbine, supported by a tension-leg platform, to harness ocean and tidal currents for renewable energy production. By incorporating diffuser technology, the turbine’s efficiency is enhanced, increasing the coefficient of power and …
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Computational Analysis of Flow Around a Scaled Axial-Flow Hydro Turbine
… and maintenance of current-driven marine-hydrokinetic devices and with new designs coming out frequently it is imperative to understand the physics and dynamics involved. Recently, testing of the Sandia turbine, designed by University of California, Davis, Pennsylvania State and Sandia …
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Probabilistic engineering analysis and design under time-dependent uncertainty
… to the reliability analysis of designing a hydrokinetic turbine blade subjected to stochastic river flow loading. Extension of the proposed methods to the reliability analysis with mixture of random and interval variables is also a contribution of this dissertation. The engineering examples …
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Uncertainty analysis of acoustic flow measuring instruments for characterization of high energetic river flow
… from 0.05x10^7 to 3x10^7. As the performance of hydrokinetic turbines operating in highly energetic flows depends on localized velocity and turbulence parameters, uncertainty analysis contributes to improving river site characterization for the marine industry. The uncertainty analysis applies to …
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Energy generation in the canal irrigation network in India : a case for integrated spatial planning
… above the canal surface). The potential for hydrokinetic generation in irrigation canals, which uses the energy captured from flowing water, has not been rigorously investigated. Indeed, there are currently no canal-network level methods for energy planning that integrate generation and local …
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Performance Analysis and Tank Test Validation of a Hybrid Wave-Current Energy Converter with a Single Power Takeoff
Marine and hydrokinetic (MHK) energy, including ocean waves, tidal current, ocean current and river current, has been recognized as a promising power source due to its full-day availability and high energy potential. At this stage, ocean current energy, tidal energy and ocean wave energy are …
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Vortex-induced vibration of a linearly-sprung cylinder with nonlinear energy sinks
… VIV suppression device, but also as an efficient hydrokinetic energy harvester. For a translational NES, at a value of the Reynolds number slightly above the fixed-cylinder Hopf bifurcation, we construct a reduced-order model (ROM) of the fluid–structure interaction based on a wake oscillator, …
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Dynamics of vortices in complex wakes: modeling, analysis, and experiments
… operational capabilities of the more established hydrokinetic energy converters and the discussed technology promises to be a significant tool to generate useful power from these copiously available but previously untapped sources.
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High Resolution Measurements of the Mean Three-dimensional Flow Field in a Natural River
The flow velocity in a river is three-dimensional (3D), turbulent, and varies in time and space. Capturing this variability in field measurements to support studies of river processes has proven particularly challenging. While originally developed to measure discharge, boat-mounted acoustic Doppler …