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Appl. Sci. 2018, 8(3), 434; https://doi.org/10.3390/app8030434

Study on Actuator Line Modeling of Two NREL 5-MW Wind Turbine Wakes

1
College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
2
School of Mathematics, Computer Sciences & Engineering, City, University of London, London EC1V 0HB, UK
*
Author to whom correspondence should be addressed.
Received: 8 February 2018 / Revised: 28 February 2018 / Accepted: 9 March 2018 / Published: 13 March 2018
(This article belongs to the Section Mechanical Engineering)

Abstract

The wind turbine wakes impact the efficiency and lifespan of the wind farm. Therefore, to improve the wind plant performance, research on wind plant control is essential. The actuator line model (ALM) is proposed to simulate the wind turbine efficiently. This research investigates the National Renewable Energy Laboratory 5 Million Watts (NREL 5-MW) wind turbine wakes with Open Field Operation and Manipulation (OpenFOAM) using ALM. Firstly, a single NREL 5-MW turbine is simulated. The comparison of the power and thrust with Fatigue, Aerodynamics, Structures, and Turbulence (FAST) shows a good agreement below the rated wind speed. The information relating to wind turbine wakes is given in detail. The top working status is proved at the wind speed of 8 m/s and the downstream distance of more than 5 rotor diameters (5D). Secondly, another case with two NREL 5-MW wind turbines aligned is also carried out, in which 7D is validated as the optimum distance between the two turbines. The result also shows that the upstream wind turbine has an obvious influence on the downstream one. View Full-Text
Keywords: wind turbine wakes; ALM; NREL 5-MW; OpenFOAM; two wind turbines wind turbine wakes; ALM; NREL 5-MW; OpenFOAM; two wind turbines
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Yu, Z.; Zheng, X.; Ma, Q. Study on Actuator Line Modeling of Two NREL 5-MW Wind Turbine Wakes. Appl. Sci. 2018, 8, 434.

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