Numerical Study on the Performance Effect of Solidity on the Straight-Bladed Vertical Axis Wind Turbine

Li, Shengmao; Li, Yan

doi:10.1109/appeec.2010.5449269

Cited by 22 publications

(10 citation statements)

References 2 publications

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“…These results agree with findings in [32,35,[41][42][43] The normal and tangential voltages are both periodic values that undergo important variations during rotor rotation. The total tangential voltage produces the total torque.…”

Section: Power Variations Produced As a Function Of The Rotational Anglesupporting

confidence: 83%

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Electric Circuit Model for the Aerodynamic Performance Analysis of a Three-Blade Darrieus-Type Vertical Axis Wind Turbine: The Tchakoua Model

et al. 2016

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Abstract:The complex and unsteady aerodynamics of vertical axis wind turbines (VAWTs) pose significant challenges for simulation tools. Recently, significant research efforts have focused on the development of new methods for analysing and optimising the aerodynamic performance of VAWTs. This paper presents an electric circuit model for Darrieus-type vertical axis wind turbine (DT-VAWT) rotors. The novel Tchakoua model is based on the mechanical description given by the Paraschivoiu double-multiple streamtube model using a mechanical-electrical analogy. Model simulations were conducted using MATLAB for a three-bladed rotor architecture, characterized by a NACA0012 profile, an average Reynolds number of 40,000 for the blade and a tip speed ratio of 5. The results obtained show strong agreement with findings from both aerodynamic and computational fluid dynamics (CFD) models in the literature.

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Section: Power Variations Produced As a Function Of The Rotational Anglesupporting

confidence: 83%

“…These results agree with findings in [32,35,[41][42][43]. The power produced by each blade is always positive and is a variable and periodic quantity with a period of π.…”

Section: Power Variations Produced As a Function Of The Rotational Anglesupporting

confidence: 83%

Electric Circuit Model for the Aerodynamic Performance Analysis of a Three-Blade Darrieus-Type Vertical Axis Wind Turbine: The Tchakoua Model

et al. 2016

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“…Similar result has been investigated by Tangler JL. et al [30], as well as Li S. et al [31]. However, these recently accomplished studies do not account for support structure that tend to have considerable influence on the performance of VAWT.…”

Section: Introductionmentioning

confidence: 98%

Effect of number of blades on aerodynamic forces on a straight-bladed Vertical Axis Wind Turbine

Maeda

Kamada

et al. 2015

Energy

175

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“…The azimuthal angle θ indicates the position of the blade in the track circle, θ = θ 0 + ωt, in which ω is the angular velocity around the rotation center O and θ 0 is the initial azimuthal angle of the blade. At present, prediction methods for the hydrodynamic performance of vertical axis tidal turbines can broadly be divided into the following four types: Stream-tube model methods [4][5][6], vortex model methods [7][8][9], computational fluid dynamic (CFD) methods [2,10,11] and model test methods [12][13][14][15]. Stream-tube model methods are based on the momentum theorem and have difficulties predicting the flow field characteristics of turbines when the speed ratio increases to a point past which the momentum equation may diverge, leading to no solution.…”

Section: Methodsmentioning

confidence: 99%

An Unsteady Boundary Element Model for Hydrodynamic Performance of a Multi-Blade Vertical-Axis Tidal Turbine

Chen

2018

Water

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An unsteady boundary element model is developed to simulate the unsteady flow induced by the motion of a multi-blade vertical axis turbine. The distribution of the sources, bound vortices and wake vortices of the blades are given in detail. In addition, to make the numerical solution more robust, the Kutta condition is also introduced. The developed model is used to predict the hydrodynamic performance of a vertical axis tidal turbine and is validated by comparison with experimental data and other numerical solutions available in the literature. Good agreement is achieved and the calculation of the proposed model is simpler and more efficient than prior numerical solutions. The proposed model shows its capability for future profile design and optimization of vertical axis tidal turbines.

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Numerical Study on the Performance Effect of Solidity on the Straight-Bladed Vertical Axis Wind Turbine

Cited by 22 publications

References 2 publications

Electric Circuit Model for the Aerodynamic Performance Analysis of a Three-Blade Darrieus-Type Vertical Axis Wind Turbine: The Tchakoua Model

Electric Circuit Model for the Aerodynamic Performance Analysis of a Three-Blade Darrieus-Type Vertical Axis Wind Turbine: The Tchakoua Model

Effect of number of blades on aerodynamic forces on a straight-bladed Vertical Axis Wind Turbine

An Unsteady Boundary Element Model for Hydrodynamic Performance of a Multi-Blade Vertical-Axis Tidal Turbine

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