Journal ArticleDOI
A Vortex Model of the Darrieus Turbine: An Analytical and Experimental Study
TLDR
A preliminary aerodynamic performance prediction model has been constructed for the Darrieus turbine using a vortex lattice method of analysis and a series of experiments were conducted for the express purpose of validating the analytical model.Abstract:
A preliminary aerodynamic performance prediction model has been constructed for the Darrieus turbine using a vortex lattice method of analysis. A series of experiments were conducted for the express purpose of validating the analytical model. These experiments were conducted on a series of two dimensional rotor configurations which were towed in a large tank of water. The use of water as a working fluid was intended to facilitate both flow visualization and the ability to measure aerodynamic blade forces while allowing operation at sufficiently high Reynolds numbers. The primary purpose of this research was to allow reasonable predictions of aerodynamic blade forces and moments to be made.read more
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Journal ArticleDOI
Aerodynamic models for Darrieus-type straight-bladed vertical axis wind turbines
TL;DR: In this article, the main aerodynamic models that have been used for performance prediction and design of straight-bladed Darrieus-type VAWTs are presented. But, the authors did not discuss the performance of these models.
Journal ArticleDOI
Wind-Turbine and Wind-Farm Flows: A Review
TL;DR: This review summarizes recent experimental, computational, and theoretical research efforts that have contributed to improving the understanding and ability to predict the interactions of ABL flow with wind turbines and wind farms.
Journal ArticleDOI
Progress and recent trends in wind energy
TL;DR: In this article, the authors reviewed wind energy history, wind-power meteorology, the energy-climate relations, windturbine technology, wind economy, wind hybrid applications and the current status of installed wind energy capacity all over the world reviewed critically with further enhancements and new research trend direction suggestions.
Journal ArticleDOI
Experimental analysis of the flow field around horizontal axis tidal turbines by use of scale mesh disk rotor simulators
Luke Myers,AbuBakr S. Bahaj +1 more
TL;DR: In this article, the authors identify and provide an understanding of the principal parameters that govern the downstream wake structure and its recovery to the free-stream velocity profile, and demonstrate that there are a number of interdependent variables that affect the rate of wake recovery and will have a significant impact on the spacing of marine current turbines within an array.
Journal ArticleDOI
Near wake flow analysis of a vertical axis wind turbine by stereoscopic particle image velocimetry
TL;DR: In this article, the development of the near wake of a vertical axis wind turbine is investigated by stereoscopic particle image velocimetry in an open-jet wind tunnel on an H-shaped rotor, operated at a tip speed ratio of 4.5 and an average chord-based Reynolds number of 1.7 × 10 5.