Performance effects of attachment on blade on a straight-bladed vertical axis wind turbine

Yan, Li; Tagawa, Kotaro; Liu, Wei

doi:10.1016/j.cap.2009.11.072

Cited by 38 publications

(18 citation statements)

References 5 publications

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“…When the Reynolds number was lower than 30,000, the operation performance would be improved as the roughness increased; however, when the Reynolds number exceeded 30,000, the power coefficient decreased. Similarly, Li [77] investigated how attachments would impact on the operation performance of H Darrieus VAWT, as shown in Fig. 25.…”

Section: Impact Of Surface Roughness and Attachmentsmentioning

confidence: 99%

“…Chong [77] designed a novel omni-direction-guide-vane (ODGV) surrounding a VAWT to improve the performance of the wind turbine, as shown in Fig. 24.…”

Section: Efficiency Improvementsmentioning

confidence: 99%

“…Comparative analysis of different turbulence models to validate LES [40] 3D CFD To study the aerodynamic performances Evaluation of energy performance and aerodynamic forces for VAWT [62,63] To compare the computational results obtained by using different methods Comparison of computational results with results obtained from the blade element momentum theory and 2D CFD analysis [64]; comparison of computational results with results obtained from 2D CFD analysis and experimental measurements [3] Experimental test Wind tunnel test To study the aerodynamic performances Experimental research under unsteady wind conditions by using the wind tunnel test [65]; observation of flow separation [66]; study on change of unsteady pressure distributed over an airfoil [67]; aerodynamic loading behavior under vibration and isolated vibration conditions [68] To improve efficiency Study on effect of an upstream deflector on output power of two reversely rotating "H" wind turbines [71]; use of zero-net mass flux actuation to improve the blade performance under low wind speeds [72]; study on application of synthetic jets in VAWTs under dynamic stall [73]; study on effect of plasma actuators on performances of VAWTs [74]; investigated the effect of guide vane geometry on the performance of a straight-bladed vertical axis wind turbine [75]; Test the omni-direction-guide-vane (ODGV) surrounding a vertical axis wind turbine (VAWT) [76] To study the effect of surface roughness and attachments Study on impact of surface roughness on operation performances [3]; effect of attachments on operation performance of "H" wind turbines [77] Particle image velocimetry measurement…”

Section: Efficiency Improvementsmentioning

confidence: 99%

See 2 more Smart Citations

Darrieus vertical axis wind turbine: Basic research methods

Jin

Zhao

Ke-jun

et al. 2015

Renewable and Sustainable Energy Reviews

118

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Section: Impact Of Surface Roughness and Attachmentsmentioning

confidence: 99%

“…Chong [77] designed a novel omni-direction-guide-vane (ODGV) surrounding a VAWT to improve the performance of the wind turbine, as shown in Fig. 24.…”

Section: Efficiency Improvementsmentioning

confidence: 99%

Section: Efficiency Improvementsmentioning

confidence: 99%

See 1 more Smart Citation

Darrieus vertical axis wind turbine: Basic research methods

Jin

Zhao

Ke-jun

et al. 2015

Renewable and Sustainable Energy Reviews

118

View full text Add to dashboard Cite

“…Due to these merits, SB-VAWT has gained more and more attentions recent years. Researchers from many universities and institutions have investigated in this kind of turbine [2].…”

Section: Introductionmentioning

confidence: 99%

Investigation on Performance Influence of Maximum Thickness Position on Vertical Axis Wind Turbine Airfoil

Mei

2011

2011 Asia-Pacific Power and Energy Engineering Conference

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Airfoil geometric configuration is very important for aerodynamic performance of a straight-bladed vertical axis wind turbine (SB-VAWT). In recent study, Islam et al have pointed out old NACA-4 are not perfectly suited for SB-VAWT operating at low Reynolds number and special purpose airfoils is needed. Islam has singled out four required geometric features which would be suitable for SB-VAWT airfoil. However, the maximum thickness position, considered one of the important geometric parameters, was not involved in Islam's research. In this paper, NACA0015 airfoil was chosen as the basic airfoil, whose maximum thickness position was shifted to generate another four airfoils. With the approach of combining XFLR5 program and Viterna-Corrignan psot-stall mode, airfoil characteristics in attack angle range from 0 degree to 90 degree have been calculated. It has been found in this paper that, with the Reynolds number changing from 50,000 to 500,000, altering the maximum thickness position has varying degrees of affects on airfoil aerodynamic characteristics. The maximum thickness position should be involved in the SB-VAWT airfoil design, and the optimum maximum thickness position needs to be determined with the consideration of the Reynolds number range where the SB-VAWT operates.

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“…Furthermore, the icing rate and icing area of blade were also calculated and analyzed. Li et al (2010Li et al ( , 2011Li et al ( , 2012) also performed some wind tunnel tests and numerical simulations on the blade icing both for HAWT and VAWT.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation on the Aerodynamic Performance of NLF-0414 Iced-Airfoil

Ebrahimi¹,

Hajipour²,

Hasheminasa³

2016

JAFM

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Icing phenomenon on a natural laminar flow airfoil (NLF-0414) has been experimentally investigated. Double horn glaze ice geometry which was acquired during a 15 minutes spray time at−2.23℃ with liquid water content and a median volumetric diameter of 1.0 g/m 3 and 20 μm, has been extracted from database of NASA Lewis Research Center. Pressure distribution over airfoil surfacewas evaluated at angles of attack between -2 to 6 degreesfor both iced and clean airfoils. Aerodynamics performance degradation of the iced airfoil has been studied and it is shown that double horn ice accretion, due to its unique geometry, severely affects aerodynamic characteristics of natural laminar flow airfoils. Reattachment locations have been evaluated for upper and lower separation bubbles. The upper surface separation bubble was seen to increase in size in contrary to the lower surface separation bubble.

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Performance effects of attachment on blade on a straight-bladed vertical axis wind turbine

Cited by 38 publications

References 5 publications

Darrieus vertical axis wind turbine: Basic research methods

Darrieus vertical axis wind turbine: Basic research methods

Investigation on Performance Influence of Maximum Thickness Position on Vertical Axis Wind Turbine Airfoil

Experimental Investigation on the Aerodynamic Performance of NLF-0414 Iced-Airfoil

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