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Characteristics of the fluid–structure interaction within Darrieus water turbines with highly flexible blades

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TLDR
In this article, the effect of flexible structures in a highly dynamic flow regime including separation and stall is studied systematically in an experimental setup which permits observations of all regimes ranging from quasi-static state up to the occurrence of deep dynamic stall and beyond.
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This article is published in Journal of Fluids and Structures.The article was published on 2019-07-01 and is currently open access. It has received 25 citations till now. The article focuses on the topics: Turbine blade & Tip-speed ratio.

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Citations
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Wind turbine design with emphasis on Darrieus concept Ion Paraschivoiu

TL;DR: In this article, the aerodynamic design and performance of VAWTs based on the Darrieus concept is discussed, as well as future trends in design and the inherent socioeconomic and environmental friendly aspects of wind energy as an alternate source of energy.
Journal ArticleDOI

Performance Analysis of a H-Darrieus Wind Turbine for a Series of 4-Digit NACA Airfoils

TL;DR: In this paper, the authors used the unsteady Reynolds averaged Navier-Stokes (URANS) approach with the k-ω shear stress transport (SST) turbulence model to estimate the H-Darrieus wind turbine aerodynamic performance, aerodynamic blade loads, and velocity profiles downstream behind the rotor.
Journal ArticleDOI

Passive flow control mechanisms with bioinspired flexible blades in cross-flow tidal turbines

TL;DR: In this paper, a bioinspired approach with hyperflexible turbine blades is proposed to reduce flow separation and stall in a passive manner, which results in higher efficiency and increased turbine lifetime through decreased structural loads.
Journal ArticleDOI

Experimental investigation of an optimised pitch control for a vertical-axis turbine

TL;DR: In this paper, an experimental method to obtain the motion law of a pitch system required for maximising the power output of a vertical-axis water turbine (VAWT) is presented.
Journal ArticleDOI

The effects of outline of the symmetrical flapping hydrofoil on energy harvesting performance

TL;DR: In this paper, the authors investigated the energy harvesting performance of symmetrical flapping hydrofoil varying with thickness, shape and position of pitching axis at a Reynolds number of 1100 and found that enhancing the thickness of the foil can modestly increase energy harvesting efficiency in the range of 0.03 ≤ β ≤ 0.06.
References
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Wind turbine design with emphasis on Darrieus concept Ion Paraschivoiu

TL;DR: In this article, the aerodynamic design and performance of VAWTs based on the Darrieus concept is discussed, as well as future trends in design and the inherent socioeconomic and environmental friendly aspects of wind energy as an alternate source of energy.
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Wind turbine design with emphasis on darrieus concept

TL;DR: In this article, the aerodynamic design and performance of VAWTs based on the Darrieus concept is discussed, as well as future trends in design and the inherent socioeconomic and environmental friendly aspects of wind energy as an alternate source of energy.
Journal ArticleDOI

Dynamic Stall Experiments on Oscillating Airfoils

TL;DR: In this article, the leading edge geometry of an NACA 0012 airfoil has been studied in incompressible flow at moderately large Reynolds numbers and three different types of stall were produced.
Journal ArticleDOI

Potential order-of-magnitude enhancement of wind farm power density via counter-rotating vertical-axis wind turbine arrays

TL;DR: In this article, the authors investigated the use of counter-rotating vertical-axis wind turbines (VAWTs) in order to achieve higher power output per unit land area than existing wind farms consisting of HAWTs.

The phenomenon of dynamic stall

TL;DR: In this paper, the general features of dynamic stall on oscillating airfoils are explained in terms of the vortex shedding phenomenon, and the important differences between static stall, light dynamic stall, and deep stall are described.
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