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Готові списки джерел за темами / Low wind

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Дисертації

Добірка наукової літератури з теми "Low wind"

Автор: Grafiati

Опубліковано: 24 травня 2025

Оновлено: 30 травня 2025

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Дисертації з теми "Low wind"

1

Dahmer, Marc R. Market Patrick S. "Investigating near-surface wind fields as influenced by low-level jet occurrences in Missouri." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6555.

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Анотація:

The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on November 13, 2009). Thesis advisor: Dr. Patrick S. Market Includes bibliographical references.

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2

Marchenko, S. V. "Wind inhomogeneities in low-Z environment : observations." Universität Potsdam, 2007. http://opus.kobv.de/ubp/volltexte/2008/1776/.

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We discuss the results of time-resolved spectroscopy of three presumably single Population I Wolf-Rayet stars in the Small Magellanic Cloud, where the ambient metallicity is $sim 1/5 Z_odot$. We were able to detect and follow numerous small-scale wind-embedded inhomogeneities in all observed stars. The general properties of the moving features, such as their velocity dispersions, emissivities and average accelerations, closely match the corresponding characteristics of small-scale inhomogeneities in the winds of Galactic Wolf-Rayet stars.

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3

Harvey, Scott A. "Low-speed wind tunnel flow quality determination." Thesis, Monterey, California. Naval Postgraduate School, 2011. http://hdl.handle.net/10945/5584.

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Approved for public release; distribution is unlimited.<br>lected points. Incorporated instrumentation includes pressure transducers attached to a pitot-static tube, wall static pressure taps, and a pressure rake; a hotwire anemometry system, and a linear traverse system. These were integrated with a data acquisition (DAQ) processor with analog to digital conversion and digital I/O boards, and controlled using in-house developed LabVIEW software. Testing showed a maximum axial velocity of 38 m/s, which is 84% of the tunnel?s rated speed. The 2-D flow uniformity was within Â±7% by pressure rake

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4

Keeli, Anupama. "Low frequency transmission for remote power generating systems." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41190.

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Анотація:

The goal of this Masters Thesis research is to evaluate alternative transmission systems from remote wind farms to the main grid using low-frequency AC technology. Low frequency means a frequency lower than nominal frequency (60/50Hz). The low-frequency AC network can be connected to the power grid at major substations via cyclo-converters that provide a low-cost interconnection and synchronization with the main grid. Cyclo-converter technology is utilized to minimize costs which result in systems of 20/16.66 Hz (for 60/50Hz systems respectively). Low frequency transmission has the potential t

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5

Alam, Muhammad Mahbubul. "Wind-driven rotodynamic pumps for low-lift applications." Thesis, University of Reading, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359007.

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6

Prevezer, Tanya. "Wind pressure fluctuations on a low-rise building." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287236.

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7

Wang, Shuai. "The low-level wind structure of tropical cyclones." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/44564.

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Анотація:

The main effects of tropical cyclones include high winds, extensive storm surges, and widespread flooding. These main effects are all closely related to the low-level wind structure, the height of which is about 2 km from the underlying surface. A physically based analytic model (λ model) is presented to describe the low-level wind structure of tropical cyclones in terms of one intensity measure, one size measure, and the storm meridional position. The λ model provides an accurate fit of the near-surface azimuthal wind field simulated with an idealized full-physics numerical model. This numeri

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8

Feldman, Michael A. "Efficient Low-Speed Flight in a Wind Field." Thesis, Virginia Tech, 1996. http://hdl.handle.net/10919/36527.

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Анотація:

A new software tool was needed for flight planning of a high altitude, low speed unmanned aerial vehicle which would be flying in winds close to the actual airspeed of the vehicle. An energy modeled NLP formulation was used to obtain results for a variety of missions and wind profiles. The energy constraint derived included terms due to the wind field and the performance index was a weighted combination of the amount of fuel used and the final time. With no emphasis on time and with no winds the vehicle was found to fly at maximum lift to drag velocity, V<sub>md</sub>. When flying in tail wind

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9

Carrion, Marina. "Low mach number CFD for wind turbine analysis." Thesis, University of Liverpool, 2014. http://livrepository.liverpool.ac.uk/2005639/.

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Анотація:

To maximise the amount of energy extracted from wind turbines, the rotor diameter has increased, reaching values of 160m in some cases. Large scale wind turbines are working at high Reynolds numbers and a wide range of flow conditions, with virtually incompressible flow present at the root and mildly compressible near the blade tips, where the Mach numbers can reach locally 0.48 for the largest wind turbines employed to date. In traditional aerodynamics, most CFD methods were designed to cope with high Mach number flows and consequently solve the compressible Navier-Stokes equations. This is t

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10

Sangpanich, Umarin. "Optimization of wind-solar energy systems using low wind speed turbines to improve rural electrification." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=18944.

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Анотація:

Electricity is significant in improving the quality of life for people in rural and remote areas in developing countries. There are two main options for Rural Electrification (RE), namely grid extension and stand-alone systems. The governments and developers face the challenges of their limitations, namely technical, economic and environmental effects of each RE choice. This thesis intends to improve RE by focusing on renewable energy technologies, namely Wind Turbine (WT) and Photovoltaic (PV) systems. They have been developed and applied to RE because they are simple and environmentally frie

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