A novel actuator line-immersed boundary (AL-IB) hybrid approach for wake characteristics prediction of a horizontal-axis wind turbine

2022 ◽  
Vol 253 ◽  
pp. 115193
Author(s):  
Renwei Ji ◽  
Ke Sun ◽  
Jianhua Zhang ◽  
Renqing Zhu ◽  
Shuqi Wang
Energy ◽  
2021 ◽  
Vol 218 ◽  
pp. 119519
Author(s):  
Yuan Fang ◽  
Gen Li ◽  
Lei Duan ◽  
Zhaolong Han ◽  
Yongsheng Zhao

2017 ◽  
Vol 60 (4) ◽  
pp. 593-601 ◽  
Author(s):  
LiRu Zhang ◽  
JiangKuan Xing ◽  
JianWen Wang ◽  
RenYu Yuan ◽  
XueQing Dong ◽  
...  

Energies ◽  
2019 ◽  
Vol 12 (12) ◽  
pp. 2395 ◽  
Author(s):  
Haojun Tang ◽  
Kit-Ming Lam ◽  
Kei-Man Shum ◽  
Yongle Li

This paper presents wind tunnel tests on the wake characteristics of a three-blade horizontal axis wind turbine and the wake effect on the performance of a downstream turbine. For a single turbine model, the performance was determined and this was followed by measurement of the wind characteristics including velocities, turbulence intensities, and correlation in the wake flow field. Subsequently, taking two horizontal axis wind turbines in a tandem arrangement into account, their performance was tested and the aerodynamic mechanism was discussed. The results showed that the upstream turbine with blades set at a small pitch angle provided smaller disturbance to the flow, but as the blade turned faster, larger changes in the velocity and the turbulence intensity occurred in its wake due to the more frequent disturbance of the wind turbine. The correlation of wake velocities in the turbine swept area also obviously decreased from the free-stream situation. For the downstream turbine, the output power loss largely depended on the wake characteristics of the upstream turbine, which was closely related to lower wind velocities or higher turbulence intensities. The decrease in correlation of the streamwise velocity within the blade swept area is accompanied by the increased correlation of the tangential velocity, which may be beneficial to the downstream turbine’s performance.


2014 ◽  
Vol 2014 (0) ◽  
pp. _0520-1_-_0520-2_
Author(s):  
Yuji TASAKA ◽  
Takahiro NAKASHIMA ◽  
Yuichi MURAI ◽  
Yoshihiko OISHI

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