Visualization of aerodynamic forces and flow field on a straight-bladed vertical axis wind turbine by wind tunnel experiments and panel method
| Autor: | Chang Cai, Yehong Dong, Qing'an Li, Takao Maeda, Fanghong Zhang, Jianzhong Xu, Kento Shimizu, Yasunari Kamada |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Vertical axis wind turbine 020209 energy Mechanical Engineering Flow (psychology) 02 engineering and technology Building and Construction Mechanics Aerodynamics Pollution Industrial and Manufacturing Engineering law.invention Vortex Aerodynamic force Azimuth General Energy Pressure measurement 020401 chemical engineering law 0202 electrical engineering electronic engineering information engineering 0204 chemical engineering Electrical and Electronic Engineering Civil and Structural Engineering Wind tunnel |
| Zdroj: | Energy. 225:120274 |
| ISSN: | 0360-5442 |
| DOI: | 10.1016/j.energy.2021.120274 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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