Influence of microcylinders with different vibration laws on the flow control effect of a horizontal axis wind turbine

Wind Energy ◽  
2019 ◽  
Vol 22 (12) ◽  
pp. 1800-1824
Author(s):  
Ying Wang ◽  
Gaohui Li ◽  
Dahai Luo ◽  
Diangui Huang
Keyword(s):  
Flow Control ◽  
Wind Turbine ◽  
Horizontal Axis ◽  
Control Effect ◽  
Horizontal Axis Wind Turbine

Numerical investigation of active flow control with co-flowing jet in a horizontal axis wind turbine

2020 ◽  
pp. 0309524X2096139
Author(s):  
Fangrui Shi ◽  
Yingqiao Xu ◽  
Xiaojing Sun
Keyword(s):  
Flow Control ◽  
Wind Turbine ◽  
Performance Enhancement ◽  
Active Flow Control ◽  
Three Dimensional ◽  
Horizontal Axis ◽  
Suction Surface ◽  
Horizontal Axis Wind Turbine ◽  
Momentum Coefficient ◽  
Active Flow

In this paper, a three-dimensional numerical simulation of the aerodynamic performance of a horizontal axis wind turbine (HAWT) whose blades are equipped with a new active flow control concept called Co-Flowing Jet (CFJ) is carried out. Numerical results show that the use of CFJ over the blade suction surface can effectively delay flow separation, thus improving the net torque and power output of HAWT. Besides, this increment in the net power produced by the turbine is considerably higher than the power consumed by the CFJ. Thus, the overall efficiency of the HAWT can be greatly increased. Furthermore, influences of different CFJ operating parameters including location of injection port, jet momentum coefficient and slot length on the performance enhancement of a HAWT are also systematically studied and the optimal combination of these parameters to obtain the best possible turbine efficiency throughout a range of different wind speeds has been identified.

Quantitative impact of a micro-cylinder as a passive flow control on a horizontal axis wind turbine performance

Energy ◽  
2021 ◽  
pp. 122654
Author(s):  
Wafaa Mostafa ◽  
Abouelmagd Abdelsamie ◽  
Momtaz Sedrak ◽  
Dominique Thévenin ◽  
Mohamed H. Mohamed
Keyword(s):  
Flow Control ◽  
Wind Turbine ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbine ◽  
Passive Flow Control ◽  
Passive Flow ◽  
Turbine Performance ◽  
Quantitative Impact

scholarly journals Application of flow control using plasma actuator to horizontal axis wind turbine

2020 ◽  
Vol 1618 ◽  
pp. 052022
Author(s):  
T Matsuda ◽  
T Maeda ◽  
Y Kamada ◽  
T Ushigusa ◽  
H Kobayashi ◽  
...  
Keyword(s):  
Flow Control ◽  
Wind Turbine ◽  
Plasma Actuator ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbine

Withdrawal: Computations of Aerodynamic Behaviour of Small Horizontal Axis Wind Turbine with NACA4418 airfoil

2019 ◽  
Author(s):  
Essam E. Khalil ◽  
Gamal E. ElHarriri ◽  
Eslam E. AbdelGhany ◽  
Moemen E. Farghaly
Keyword(s):  
Wind Turbine ◽  
Horizontal Axis ◽  
Horizontal Axis Wind Turbine

scholarly journals Canard optimization for enhancing the performance of small horizontal axis wind turbine at low wind speeds

2020 ◽  
Vol 37 ◽  
pp. 63-71
Author(s):  
Yui-Chuin Shiah ◽  
Chia Hsiang Chang ◽  
Yu-Jen Chen ◽  
Ankam Vinod Kumar Reddy
Keyword(s):  
Wind Turbine ◽  
Urban Areas ◽  
Horizontal Axis ◽  
Power Coefficient ◽  
Peak Performance ◽  
Small Scale ◽  
Horizontal Axis Wind Turbine ◽  
Wind Speeds ◽  
Optimum Parameters ◽  
Low Wind Speeds

ABSTRACT Generally, the environmental wind speeds in urban areas are relatively low due to clustered buildings. At low wind speeds, an aerodynamic stall occurs near the blade roots of a horizontal axis wind turbine (HAWT), leading to decay of the power coefficient. The research targets to design canards with optimal parameters for a small-scale HAWT system operated at variable rotational speeds. The design was to enhance the performance by delaying the aerodynamic stall near blade roots of the HAWT to be operated at low wind speeds. For the optimal design of canards, flow fields of the sample blades with and without canards were both simulated and compared with the experimental data. With the verification of our simulations, Taguchi analyses were performed to seek the optimum parameters of canards. This study revealed that the peak performance of the optimized canard system operated at 540 rpm might be improved by ∼35%.

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