High-resolution numerical investigation into the effects of winglet on the aerodynamic performance for a three-dimensional vertical axis wind turbine

Xu, Wenhao; Li, Gaohua; Wang, Fuxin; Li, Ye

doi:10.1016/j.enconman.2019.112333

Cited by 45 publications

(14 citation statements)

References 37 publications

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“…The length of the bars and the density of the bowl should be considered [19] . Comparative analysis reveals that under three distinct end speed ratio scenarios, VAWTs with winglets can achieve a noteworthy improvement in power coefficients of 16 to 19 percentage points while maintaining the same coverage area [13] .…”

Section: Power Coefficient and Torquementioning

confidence: 99%

“…The classical drawing line theory, on the other hand, states that a drop in the vortex tip usually leads to a decrease in the beam's load, which may reverse with an increase in the style coefficient. In order to build and arrange winglets that are optimal for practical engineering applications, it is necessary to better clarify the winglet effect from a fluid mechanics perspective [13] .…”

Section: Introductionmentioning

confidence: 99%

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Advanced Turbine Working: Impact of Winglet on Vertical Wind Turbine Darrieus Tipe H

Amir,

Soenoko,

Wijayanti

et al. 2024

MECHTA

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In this study, the effect of winglets on improving the performance of type h darrieus wind turbines was investigated. The aim is to determine the most suitable winglet design and find out the magnitude of the increase in wind turbine performance. The method used is experimentation to find the RPM and torque used for calculate the TSR value and turbine power. From all the trial and error experiments, the type of blended winglet that best suited the characteristics of the VAWT. The experimental results show that the addition of blended winglet increases RPM of 13.6% in the 3-blade turbine and turbine it increases of 9% in the 4-blade turbine. The increase in average torque is 13.2% in a 3-blade turbine and 9.4% in a 4-blade turbine. The average increase in power coefficient is 11% in a 3-blade turbine and 9% in a 4-blade blade. In conclusion, the addition of blended winglets produces better torque and power compared to turbine models without winglets.

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Section: Power Coefficient and Torquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advanced Turbine Working: Impact of Winglet on Vertical Wind Turbine Darrieus Tipe H

Amir,

Soenoko,

Wijayanti

et al. 2024

MECHTA

View full text Add to dashboard Cite

show abstract

“…They concluded that LSB moved near to leading edge of the aerofoil as the Reynolds number was enhanced from 2.5×10 4 to 7.5×10 4 and smaller laminar separation bubbles (LSB) generated at lower angle of attack. Xu et al [7] performed numerical simulations on the aerodynamic performance of vertical-axis wind turbine blade sections. They used winglets to improve the performance of the performance of the wind turbine.…”

Section: Introductionmentioning

confidence: 99%

High-resolution direct numerical simulations of flow structure and aerodynamic performance of wind turbine airfoil at wide range of Reynolds numbers

Nakhchi

Naung

Rahmati

2021

Energy

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“…A large number of studies have been conducted to increase power production while neglecting the self-starting problem [18][19][20][21][22][23][24][25]. An important inherent parameter of any VAWT is airfoil geometry.…”

Section: Introductionmentioning

confidence: 99%

Application of Simultaneous Symmetric and Cambered Airfoils in Novel Vertical Axis Wind Turbines

et al. 2021

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Two novel four-blade H-darrieus vertical axis wind turbines (VAWTs) have been proposed for enhancing self-start capability and power production. The two different airfoil types for the turbines are assessed: a cambered S815 airfoil and a symmetric NACA0018 airfoil. For the first novel wind turbine configuration, the Non-Similar Airfoils 1 (NSA-1), two NACA0018 airfoils, and two S815 airfoils are opposite to each other. For the second novel configuration (NSA-2), each of the S815 airfoils is opposite to one NACA0018 airfoil. Using computational fluid dynamics (CFD) simulations, static and dynamic conditions are evaluated to establish self-starting ability and the power coefficient, respectively. Dynamic stall investigation of each blade of the turbines shows that NACA0018 under dynamic stall impacts the turbine’s performance and the onset of dynamic stall decreases the power coefficient of the turbine significantly. The results show that NSA-2 followed by NSA-1 has good potential to improve the self-starting ability (13.3%) compared to the turbine with symmetric airfoils called HT-NACA0018. In terms of self-starting ability, NSA-2 not only can perform in about 66.67% of 360° similar to the wind turbine with non-symmetric airfoils (named HT-S815) but the power coefficient of NSA-2 at the design tip speed ratio of 2.5 is also 4.5 times more than the power coefficient of HT-S815; the power coefficient difference between HT-NACA0018 and HT-S815 (=0.231) is decreased significantly when HT-S815 is replaced by NSA-2 (=0.076). These novel wind turbines are also simple.

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High-resolution numerical investigation into the effects of winglet on the aerodynamic performance for a three-dimensional vertical axis wind turbine

Cited by 45 publications

References 37 publications

Advanced Turbine Working: Impact of Winglet on Vertical Wind Turbine Darrieus Tipe H

Advanced Turbine Working: Impact of Winglet on Vertical Wind Turbine Darrieus Tipe H

High-resolution direct numerical simulations of flow structure and aerodynamic performance of wind turbine airfoil at wide range of Reynolds numbers

Application of Simultaneous Symmetric and Cambered Airfoils in Novel Vertical Axis Wind Turbines

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