Numerical study of wake interaction and its effect on wind turbine aerodynamics based on actuator line model

Xu Ning, Yang Huang, Decheng Wan, Changhong Hu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Wake interaction normally occurs in all wind farms and impacts significantly the flow field and performance of downstream wind turbines. The present work aims to study the wind turbine wake interaction phenomenon through the CFD method using LES and actuator line model. The solver used in the present work is developed based on the open source C++ class library OpenFOAM, in which the PISO algorithm is applied to deal with the velocity pressure coupling problem. The simulations which consider uniform inflow condition and six different layouts are implemented to study the evolving process of the interacting wakes. From the numerical result, the interacting region of wakes contains higher level turbulent flow than the single wake. The fully developed turbulence appears the earliest in the case of tandem layout, leading to serious wake meandering in the end of computational domain. The diffusion of turbulence causes the merging of wakes, and thus the velocity is redistributed among the whole wake region. Velocity deficit caused by the wake decreases the convertible wind energy. The turbulent flow and meandering of the wake result in the multi-scale fluctuation of the aero-power curves of wind turbines downstream.

Original languageEnglish
Title of host publicationProceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019
EditorsJin S. Chung, Odd M. Akselsen, HyunWoo Jin, Hiroyasu Kawai, Yongwon Lee, Dmitri Matskevitch, Suak Ho Van, Decheng Wan, Alan M. Wang, Satoru Yamaguchi
PublisherInternational Society of Offshore and Polar Engineers
Pages483-490
Number of pages8
ISBN (Print)9781880653852
Publication statusPublished - Jan 1 2019
Externally publishedYes
Event29th International Ocean and Polar Engineering Conference, ISOPE 2019 - Honolulu, United States
Duration: Jun 16 2019Jun 21 2019

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
Volume1
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference29th International Ocean and Polar Engineering Conference, ISOPE 2019
CountryUnited States
CityHonolulu
Period6/16/196/21/19

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All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

Cite this

Ning, X., Huang, Y., Wan, D., & Hu, C. (2019). Numerical study of wake interaction and its effect on wind turbine aerodynamics based on actuator line model. In J. S. Chung, O. M. Akselsen, H. Jin, H. Kawai, Y. Lee, D. Matskevitch, S. Ho Van, D. Wan, A. M. Wang, ... S. Yamaguchi (Eds.), Proceedings of the 29th International Ocean and Polar Engineering Conference, ISOPE 2019 (pp. 483-490). (Proceedings of the International Offshore and Polar Engineering Conference; Vol. 1). International Society of Offshore and Polar Engineers.