Experimental investigation of wind loads on wind turbine blade under various turbulent flows

被引:3
|
作者
Li, Yi [1 ,2 ]
Song, Qian [1 ]
Li, Qiu-Sheng [3 ]
Wang, Di-Ling [1 ]
Wu, Xiao-Peng [4 ]
机构
[1] Hunan Univ Sci & Technol, Hunan Prov Key Lab Struct Wind Resistance & Vibra, Taoyuan Rd, Xiangtan 411201, Hunan, Peoples R China
[2] Wuhan Univ, Sch Civil Engn, Wuhan, Peoples R China
[3] City Univ Hong Kong, Dept Architecture & Civil Engn, Kowloon, Hong Kong, Peoples R China
[4] Xiangtan Elect Mfg Grp, Xiangtan, Hunan, Peoples R China
关键词
wind turbine blade; wind tunnel test; wind pressure distribution; wind energy; turbulence; PRESSURE-MEASUREMENT SYSTEMS; AERODYNAMIC PERFORMANCE; ENERGY; OPTIMIZATION; TUNNEL; FIELD;
D O I
10.1177/13694332211040137
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
For investigation of the effects of turbulence intensity (TI) on the wind loads on wind turbine blade, a 1:20 scaled model of a typical 3D wind turbine blade is designed and used for the pressure measurement test in a wind tunnel. Five uniform flows with different turbulence intensities are simulated in the wind tunnel test. The mean and root-mean-square (RMS) wind pressure coefficients, base moment coefficients, and their power spectral densities are presented and discussed in detail. Combined with the dynamic properties of the blade structure, wind-induced displacements at the tip of the blade are calculated by the random vibration theory. The results show that the increasing of TI amplifies the aerodynamic loads on the blade in terms of RMS wind pressure coefficients and RMS bending moment coefficients. Large wind-induced displacement of the wind turbine blade may be stimulated by high TI even under the feathering condition. This article aims to further the understanding of wind loads on wind turbine blades and provide useful information for the wind-resistant design of wind farms established in regions with high turbulence levels.
引用
收藏
页码:3809 / 3824
页数:16
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