Author:
Xin Zhiqiang,Liu Songyang,Cai Zhiming,Liao Shenghai,Huang Guoqing
Abstract
In this study, the large eddy simulation method and the actuator line model are used to investigate the wake redirection of two turbines. Different turbine spacings and yaw-based control of the upstream turbine are considered. The effects of yaw angle and turbine spacing on the output power of two turbines are comprehensively analyzed, and the physical mechanisms of the wake deficit, deflection and interaction are revealed from the distributions of the wake velocity, turbulence intensity and the structures of wake vortices. The results show that the overall power of two turbines is related to the yaw angle of the upstream turbine and the spacing between two turbines. We find yaw angle is the dominant factor in the total power improvement compared to turbine spacing. Still, a large yaw angle causes significant power fluctuations of the downstream turbine. The deficit of wake velocity and the change of output power are determined by the characteristics of the wake flow field, which the yaw control regulates.
Funder
National Natural Science Foundation of China
the Fundamental Research Funds for the Central Universities
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference32 articles.
1. Flow Structure and Turbulence in Wind Farms
2. Wind-Turbine and Wind-Farm Flows: A Review
3. A simple model for cluster efficiency;Katic;Proceedings of the European Wind Energy Association Conference and Exhibition,1986
4. Calculating the flowfield in the wake of wind turbines
5. Wind fields in wakes;Larsen;Proceedings of the 1996 European Union Wind Energy Conference,1996
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