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 14 of 14 for “"OWC"”.
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Significance of nanosilica incorporation in type G oil well cement pastes
… characterization mechanisms of oil well cement (OWC). OWC slurries have stringent performance requirements, including low viscosity, rapid strength development, low permeability and enhanced degradation resistance. Preliminary research work showed that nanosilica is capable of reducing OWC …
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High Capacity VCSEL Array Based Optical Wireless Links
… this demand. Optical wireless communication (OWC) systems have the potential to overcome the rapidly increasing demand for indoor data traffic. Compared to Radio frequency (RF) wireless systems, OWC systems offer several advantages, including a larger unlicensed bandwidth, immunity against …
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Experimental and Numerical Modelling of a Multiple Oscillating Water Column Structure
… using an array of oscillating water columns (OWC) and conventional wind energy technology. The focus of this thesis is on the wave energy-capturing aspects of the proposed platform. A 1:50, physical scale model of the proposed platform is described, and a tank testing programme for the model, …
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Evaluation of New Weigh-in-Motion Technology at the Virginia Smart Road
… system manufactured by Omni Weight Corporation (OWC) and was installed at the Virginia Smart Road for evaluation. The OWC scale is a completely sealed and buried system that has ten strain gauge sensors in its interior. Evaluation of both scales was performed by conducting a number of test runs …
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Power extraction from an oscillating water column along a coast
… specific case where an Oscillating Water Column (OWC) is attached to the tip of a long breakwater. A three-dimensional numerical model of a skeletal geometry of the the Foz do Douro breakwater is developed in order to determine the response inside the OWC pneumatic chamber to incident waves and …
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Theoretical modelling of two wave-power devices
… specific devices: the Oscillating Water Column (OWC), and the buoys. In the first part of this thesis we examine the effects of coastline geometry on the performance of an OWC. Under the assumption of inviscid irrotationnal flow, we develop a linear theory for the velocity potential for the case …
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Performance and power smoothing of innovative closed-circuit oscillating water column wave energy converter
… electrical energy. Oscillating-Water-Column (OWC) devices are among the most promising types of wave energy converters because of their relative simplicity. The present work investigates the possibility of improving the performance of this well-established concept by introducing a variation in …
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Implementation and Demonstration of a Time Domain Modeling Tool for Floating Oscillating Water Columns
… WEC is the floating Oscillating Water Column (OWC), which has been successfully field tested and warrants further exploration. This research implements a publicly accessible code in MatLab and SimuLink to simulate the dynamics of a floating OWC in the time domain. This code, known as the …
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Modelling and control of a floating oscillating water column
… Duct Buoy (BBDB) Oscillating Water Column (OWC) Wave Energy Converter was created based on existing isolated numerical models of the different energy conversion systems utilised by an OWC. The novel aspect of this numerical model is that it incorporates the interdependencies of the different …
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Design and optimization of a turbine for wave energy converters
… es el sistema de columna de agua oscilante (OWC, en su acrónimo en inglés). Esto es debido a que sus componentes más importantes se ubican fuera del mar (turbina y generador), lo cual es una ventaja en comparación con otros dispositivos diseñados para el mismo fin. Los componentes ubicados …
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Characterizing the Behavior of Smart Oil Well Cement for Enhancing the Monitoring of Cement Sheath Integrity
… monitoring the performance of oil well cement (OWC) used in the construction of the well. Recent oil well failures have clearly identified the importance of well cement on economic and environmental aspects of well drilling and completions. Currently, there is no technology available to monitor …
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Semi-automated modeling approaches to route selection in GIS
… comprising Ordered Weighted Combination models (OWC), Dynamic Decision Space (DDS), and Gateway-based approaches, were used to address problems associated with concurrent and dynamic changes in multi-objective decision space. These approaches provide efficient and flexible simulation capability …
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Feasibility of combined wind-wave energy platforms
… subject of this thesis, and it is found that an OWC Array platform with multi-MegaWatt wind turbines is a technically feasible, and potentially an economically feasible solution in the long term. Methods of design and analysis adopted in this thesis include numerical and physical modelling of …
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Performance and hull pressure analysis of scaled physical testing of a wave energy converter
Wave energy conversion is an emerging field with the potential to capture a significant amount of a globally abundant energy resource to lower reliance on fossil fuels. At present, many designs for wave energy converters are being developed which show great promise for efficiently capturing wave …