空气动力学
垂直轴风力涡轮机
涡流
风洞
空气动力
高超声速风洞
机械
压力系数
流动可视化
涡轮机
结构工程
流量(数学)
物理
工程类
航空航天工程
作者
Qingan Li,Chang Cai,Takao Maeda,Takumi Kawaguchi,Kento Shimizu,Yehong Dong,Fanghong Zhang,Jianzhong Xu
出处
期刊:Energy
[Elsevier]
日期:2021-06-01
卷期号:225: 120274-120274
被引量:8
标识
DOI:10.1016/j.energy.2021.120274
摘要
This paper investigated the evaluation of the aerodynamic performance and vortex characteristic of a straight-bladed Vertical Axis Wind Turbine (VAWT) in the spanwise direction. To observe the aerodynamic forces characteristics, pressures acting on the blade surface were measured by a multiport pressure measurement device. Pressure measurement was carried out in the spanwise sections of z/(H/2) = 0, 0.4, 0.70, 0.8 and 0.90 with wind tunnel experiments. Meanwhile, panel method based on the lifting surface theory was used to study the flow characteristics of VAWT. As a result, it was clarified that the absolute value of radial force coefficient from measurement took the maximum value at the upstream region around the azimuth angle of 100° and became small at the downstream region. Moreover, the radial force coefficient of the experimental value was significantly affected by the three-dimensional and decreased as it approached the blade tip. For the flow field, the circulation amount contour of the vertical vortex was wider near the blade center and became narrower around the blade tip in the blade spanwise direction. This study provided a better understanding of the development of aerodynamic forces and vortex characteristic through pressure measurements and panel method calculations.
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