风速和翼型弯度对垂直轴风机气动性能的影响

doi:10.3969/j.issn.1674-8530.17.3006

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Abstract To investigate the effect of wind speed and airfoil camber on the aerodynamic performance of vertical axis wind turbine(VAWT), three wind speeds such as 4, 8 and 12 m/s were specified as the design speeds and four airfoils namely NACA0015, NACA2415, NACA4415 and NACA6415 were selected as the design airfoils. 2D unsteady numerical simulations of a small H-type VAWT with these airfoils under these wind speeds were conducted to assess the C_P-λ, P_a-n and Q_a-n characteristic curves. The results showed that wind speed and airfoil camber both had a great impact on the aerodynamic performance. Wind speed mainly affects the C_P(P_a)value of rotor, range of tip speed ratio and efficient operation region width, which all increase with increasing wind speed. Airfoil camber mainly affects the C_Pmax value of rotor, range of tip speed ratio, efficient operation region width, C_P(P_a)value of rotor, economy and starting performance. However, the wind speed almost has no effect on the determination of airfoil camber. Considering various factors observed, the airfoil with a camber of 0-2% is the best choice for VAWTs.

Key words： vertical axis wind turbines wind velocity airfoil camber aerodynamic performance

Received: 21 August 2017

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	SONG Chen-Guang-

	ZHAO Zhen-Zhou-^*
	WU Guo-Qing-

	ZHU Wei-南

	LIU Ze-Wei-

Cite this article:

SONG Chen-Guang-^,,ZHAO Zhen-Zhou-^*等. Effect of wind speed and airfoil camber on aerodynamic performance of vertical axis wind turbines[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(3): 243-249.

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http://zzs.ujs.edu.cn/pgjx/EN/10.3969/j.issn.1674-8530.17.3006 OR http://zzs.ujs.edu.cn/pgjx/EN/Y2018/V36/I3/243

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