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Wind loading and response of solar tracker arrays
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NETL
NSTL
Techno-Press
Understanding the aeroelastic response of solar trackers under high turbulence wind flow is crucial for optimizing their design and performance. This paper presents a wind tunnel study on the aeroelastic response of solar trackers at a 1/20 scale. Three models were tested in a boundary layer wind tunnel under various wind directions (at specific intervals between 0 degrees and 180 degrees) and tilt angles ranging from 0 degrees to 50 degrees. The aerodynamic loads (i.e., moment coefficients) acting on the torque tube were determined, and the aerodynamic response of the models was investigated. The results show that the mean and maximum moments are largest in magnitude for wind directions from 0 degrees to 40 degrees and 140 degrees to 180 degrees. A notable increase in the mean moment coefficient is observed for tilt angles between 0 degrees and 15 degrees, followed by a progressive decrease as the tilt angle increases from 15 degrees to 50 degrees. The aerodynamic derivatives A(2)(& lowast; )and A(3)(& lowast;) were also obtained using a quasi-steady approach. The findings of this study suggest that the wind direction influences the response of the structure; the tilt angle, the natural frequency of the tracker and the stiffness of the torque tube are critical factors in preventing aeroelastic instabilities and should be carefully considered in the design process.
NETL
NSTL
Techno-Press
