Numerical investigations of wake flows of counter-rotating wind turbines in shear inflows

Heming Bai, Yang Huang, Decheng Wan, Changhong Hu

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

Wake effect” is a universal phenomenon in large-scale wind farms, which will adversely affect the benefit of wind farms. In this study, we adopt a tandem arrangement of two wind turbines to investigate a new wake effect restraining strategy called “Counter-Rotating Wind Turbine (CRWT) system” based on actuator line model and large eddy simulation. From the numerical results, the power output of the downstream wind turbine in counter-rotating configuration increased compared with co-rotating configuration. As the longitudinal spacing increases, the fluctuation of the power output of the downstream wind turbine increases, and the rotation direction has little effect on it. The yaw moment ( and blade-root out-of-plane bending moment ( Moop Myaw ) ) increase with increasing longitudinal spacing due to the local wake meandering caused by the amplified unstable shed vortex, but the rotation direction of the downstream wind turbine has little effects on them. Moreover, the low-speed shaft torque ( ) of the downstream wind turbine with the Mlss reverse rotation strategy increases when the longitudinal spacing is closer, which is consistent with the power output result.

本文言語英語
ホスト出版物のタイトルProceedings of the 31st International Ocean and Polar Engineering Conference, ISOPE 2021
出版社International Society of Offshore and Polar Engineers
ページ459-467
ページ数9
ISBN(印刷版)9781880653821
出版ステータス出版済み - 2021
イベント31st International Ocean and Polar Engineering Conference, ISOPE 2021 - Virtual, Online
継続期間: 6 20 20216 25 2021

出版物シリーズ

名前Proceedings of the International Offshore and Polar Engineering Conference
ISSN(印刷版)1098-6189
ISSN(電子版)1555-1792

会議

会議31st International Ocean and Polar Engineering Conference, ISOPE 2021
CityVirtual, Online
Period6/20/216/25/21

All Science Journal Classification (ASJC) codes

  • エネルギー工学および電力技術
  • 海洋工学
  • 機械工学

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