Research on Wake Characteristics and Output Characteristics of Umbrella Wind Turbines

被引：0
作者：
Liu D. [1 ]
Bao D. [1 ]
Liu X. [1 ]
Liu J. [1 ]
Wu S. [1 ]
Wang P. [1 ]
Tang D. [1 ]
机构：
[1] School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot
来源：
Zhongguo Jixie Gongcheng/China Mechanical Engineering | 2022年 / 33卷 / 14期
关键词：
output characteristic; umbrella wind turbine; vorticity; wake;
D O I：
10.3969/j.issn.1004-132X.2022.14.014
中图分类号：
学科分类号：
摘要：
In order to adapt to the harsh application environment of distributed wind turbines, while meeting the needs of power regulation and fan self-protection, a new type of umbrella wind turbine was proposed. In order to study the influences of the umbrella wind turbine wheel contraction angles on the wake characteristics and output characteristics, the numerical simulation and wind tunnel tests were carried out respectively. The results show that when the contraction angles of the wind turbine wheels increase, the swept areas decrease, the wake diameters decrease, the axial influence ranges of the wakes increase, and the speed recovery slows down. At the same time, the strengths of the tip vortex may decrease. The strengths of the central vortex first increase and then decrease. However, the strengths of the central vortex are always greater than those of the tip vortex, so the speed losses behind the blade roots are always greater than those of behind the tips. Besides, the wind tunnel tests also verify the effectiveness of the wind wheel contraction angles on power control. © 2022 China Mechanical Engineering Magazine Office. All rights reserved.
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页码：1751 / 1759
页数：8
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