Airfoil Design for Vertical Axis Wind Turbine Operating at Variable Tip
Speed Ratios

Mei, Yi; Qu, Jianjun; Yan, Li

doi:10.2174/1874155x01509011007

Cited by 7 publications

(3 citation statements)

References 22 publications

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“…It is common that solidity varies through adding blades. These studies were conducted for VAWT equipped TOPICAL PROBLEMS OF FLUID MECHANICS 33 _______________________________________________________________________ with blades of symmetric airfoil NACA0018 only and under zero angle of pitch [17], [18]. Flow visualization and reconstruction were performed for two-blade Darrieus rotor on the basis of physical [4] and computational experiments (see Fig.…”

Section: Specialized Cfd Packagementioning

confidence: 99%

Mathematical Modelling of Vertical-Axis Wind Turbines Rotors Aerodynamics

Dovgyi,

Moiseienko,

Polevoy

et al. 2024

Topical Problems of Fluid Mechanics 2024

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Numerical modeling of unsteady turbulent separated flows of incompressible fluid around vertical axis wind turbines (VAWT) with Darrieus and Savonius rotors was performed on the basis of the Reynolds-averaged Navier-Stokes equations, closed by the SpalartAllmaras turbulence model. The numerical solution was obtained using original homemade program code that implements an implicit finite volume algorithm based on the artificial compressibility method. Verification of developed CFD code has been carried out by simulation of several typical testing problems, namely: laminar and turbulent flow around steady and unsteady cylinder, subcritical and supercritical flow around steady and oscillating NACA 4412, NACA 0015 airfoils, aerodynamics of the turbulent flow around a 30P30N multi-element airfoil in cruise, takeoff and landing configurations, turbulent flow around tractor-trailer. The results of Darrieus and Savonius rotors simulation, physical and computational experiments with different number and geometry of blades are presented in the form of detailed flow visualization and reconstruction for two- and three-blade Darrieus rotor. The analysis of flow field near rotors was carried out and the main stages of vortex development were identified and analyzed. The results of three series of computational experiments on aerodynamic of two and three-bucket Savonius rotor were obtained, presented and discussed.

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Section: Specialized Cfd Packagementioning

confidence: 99%

Mathematical Modelling of Vertical-Axis Wind Turbines Rotors Aerodynamics

Dovgyi,

Moiseienko,

Polevoy

et al. 2024

Topical Problems of Fluid Mechanics 2024

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“…Rotor blades of the proposed design, depicted in Figure 3, are of NACA0015 [22] straight airfoil. NACA0015 airfoils are widely used as H-Darrieus airfoil blades [23]. The NACA0015 airfoil is symmetrical with no camber.…”

Section: Proposed Design Configuration Of Savonius-darrieus Integratimentioning

confidence: 99%

A Computational Fluid Dynamics Study of an Integrating Savonius-Darrieus Vertical Axis Wind Turbine

Mahrous

2020

ARFMTS

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To combine the advantages of performance of both Savonius and Darrieus wind turbines, this paper aims to study computationally a novel design configuration of a Vertical Axis Wind Turbine (VAWT). The new design would help cover a broad range of performance parameters between both types of wind turbines as well as overcome drawbacks of the Savonius type at higher rotational speed. The proposed design is to integrate both of Savonius and straight blade Darrieus wind turbines in a single VAWT design configuration. In this design, the turbine rotor consists of a number of similar NACA0015 airfoil blades set in a particular arrangement. By regulating individual angles of rotor blades, the turbine would work as either Savonius or H-Darrieus VAWT. The turbine could also be set to work at different configurations between those for the Savonius and H-Darrieus ones. The computational results revealed that the performance of the proposed integrating wind turbine would be controlled and optimized to cover the operating range of both of Savonius and Darrieus wind turbines. Besides, the performance of Savonius VAWT would be modified when applying this design. When the proposed design is practically implemented, characteristics of both of Savonius and H-Darrieus based wind turbines would be found in a single design.

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“…The C-shaped drag cup-type blades and 4 series NACA0015 and NACA0012 are quite popular for VAWT model blade profiles in a H-type rotor [22][23][24]. However, this article proposes an involute-type rotor blade in the VAWT model, because it supports the lift force as well as lift supporting drag force through an available conical-shaped space.…”

Section: Introductionmentioning

confidence: 99%

Design of Rotor Blades for Vertical Axis Wind Turbine with Wind Flow Modifier for Low Wind Profile Areas

Anthony¹,

Prasad

Kannadasan

et al. 2020

Sustainability

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This work focuses on the design and analysis of wind flow modifier (WFM) modeling of a vertical axis wind turbine (VAWT) for low wind profile urban areas. A simulation is carried out to examine the performance of an efficient low aspect ratio C-shaped rotor and a proposed involute-type rotor. Further, the WFM model is adapted with a stack of decreased diameter tubes from wind inlet to outlet. It accelerates the wind velocity, and its effectiveness is examined on the involute turbine. Numerical analysis is performed with a realizable K-ε model to monitor the rotor blade performance in the computational fluid dynamics (CFD) ANSYS Fluent software tool. This viscous model with an optimal three-blade rotor with 0.96 m2 rotor swept area is simulated between the turbine rotational speeds ranging from 50 to 250 rpm. The parameters, such as lift–drag coefficient, lift–drag forces, torque, power coefficient, and power at various turbine speeds, are observed. It results in a maximum power coefficient of 0.071 for the drag force rotor and 0.22 for the lift force involute rotor. Moreover, the proposed WFM with an involute rotor extensively improves the maximum power coefficient to an appreciable value of 0.397 at 5 m/s wind speed, and this facilitates efficient design in the low wind profile area.

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Airfoil Design for Vertical Axis Wind Turbine Operating at Variable Tip Speed Ratios

Cited by 7 publications

References 22 publications

Mathematical Modelling of Vertical-Axis Wind Turbines Rotors Aerodynamics

Mathematical Modelling of Vertical-Axis Wind Turbines Rotors Aerodynamics

A Computational Fluid Dynamics Study of an Integrating Savonius-Darrieus Vertical Axis Wind Turbine

Design of Rotor Blades for Vertical Axis Wind Turbine with Wind Flow Modifier for Low Wind Profile Areas

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