An Experimental Investigation on the Aeromechanic Performance and Wake Characteristics of a Wind Turbine Model Subjected to Pitch Motions

2016 ◽  
Author(s):  
Hui Hu ◽  
Morteza Khosravi ◽  
Partha Sarkar
Keyword(s):  
Experimental Investigation ◽  
Wind Turbine ◽  
Turbine Model ◽  
Wake Characteristics

Experimental Investigation of Instantaneous and Mean Flow Characteristics Behind the Rotor Model of Wind Turbine

2013 ◽  
Vol 8 (3) ◽  
pp. 89-97
Author(s):  
Ivan Kabardin ◽  
Igor Naumov ◽  
Robert Mikkelsen ◽  
Vladimir Pavlov ◽  
Grigory Bakakin ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Wind Turbine ◽  
Optical System ◽  
Flow Characteristics ◽  
Work Efficiency ◽  
Mean Flow ◽  
Force Characteristics ◽  
Rotor Model ◽  
Far Wake ◽  
Turbine Model

This work sufficiently appends and extends experimental investigation of flow structure downstream of the triblade turbine model, which was started in 2011. Shadow zones from blades were removed and a measuring zone was increased as a result of changing in optical system of PIV. These changes made possible to carry out measurements in much more far zone downstream the rotor model. As a result new features of flow were found out in near and far wake downstream the turbine. The estimation of turbine work efficiency on different work regimes was carried out due to tensometric measurements of rotor force characteristics. This data corresponds to assumptions and hypothesis of classical theories of rotors and to a form for the optimum blades designed by the BEM method

Aerodynamic Performance and Wake Characteristics of a Wind Turbine Model Subjected to Surge and Sway Motions

2021 ◽  
Author(s):  
Haoran Meng ◽  
Hao Su ◽  
Jia Guo ◽  
Timing Qu ◽  
Liping Lei
Keyword(s):  
Wind Turbine ◽  
Power Output ◽  
Force Sensor ◽  
Particle Image Velocimetry System ◽  
Mean Power ◽  
Electronic Load ◽  
Mean Power Output ◽  
The Impact ◽  
Turbine Model ◽  
Wake Characteristics

Abstract A wind-tunnel experimental study was performed to investigate the impact of the surge and sway motions of a wind turbine model on the power output, rotor thrust and wake characteristics. A wind turbine model was mounted on a translation platform to simulate the surge and sway motions under given amplitude and frequency. The power output and rotor thrust of the turbine model subjected to surge and sway motions were measured by using a DC variable electronic load and a six-component force sensor, respectively. For comparison, these measurements were also performed in a bottom-fixed wind turbine. The results show that the mean power output and mean rotor thrust of the turbine model under surge and sway motions are almost the same as those of the bottom-fixed turbine. However, the thrust fluctuation amplitude of the turbine model under surge motion is significantly higher than those of the turbine model under sway motion and the bottom-fixed turbine. In addition, the wake characteristics of the turbine model were also investigated by using a particle image velocimetry system. The results show that the surge and sway motions have slight effect on the near and intermediate wake of the turbine model in the horizontal plane at the rotor hub height.

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