A summary of experimental studies on heliostat wind loads in a turbulent atmospheric boundary layer
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(Accepted version)
Date
2020
Authors
Arjomandi, M.
Emes, M.
Jafari, A.
Yu, J.
Ghanadi, F.
Kelso, R.
Cazzolato, B.
Coventry, J.
Collins, M.
Editors
Richter, C.
Advisors
Journal Title
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Volume Title
Type:
Conference paper
Citation
AIP Conference Proceedings, 2020 / Richter, C. (ed./s), vol.2303, pp.030003-1-030003-10
Statement of Responsibility
Maziar Arjomandi, Matthew Emes, Azadeh Jafari, Jeremy Yu, Farzin Ghanadi, Richard Kelso, Benjamin Cazzolato, Joe Coventry, Mike Collins
Conference Name
Solar Power and Chemical Energy Systems Annual Conference (SolarPACES) (1 Oct 2019 - 4 Oct 2019 : Daegu, South Korea)
Abstract
The aerodynamic loads on heliostats have been investigated through an extensive range of experimental studies at the University of Adelaide in association with the Australian Solar Thermal Research Institute (ASTRI). Applied modelling techniques using spires and roughness elements were adopted for generation and characterisation of the temporal and spatial turbulence fluctuations, matching those in the lower region of the atmospheric boundary layer (ABL) where full-scale heliostats are positioned. Heliostat wind loads were found to be highly dependent on the critical scaling parameters of the heliostat and the turbulence intensities and scales in the ABL flow. The peak drag and lift coefficients on heliostats followed a similar variation with elevation and azimuth angles to those previously reported in the literature at a similar turbulence intensity. However, the current study revealed a linear increase of the peak drag and lift coefficients on heliostats in operating and stow positions with a parameter defined by the product of the turbulence intensity and the ratio of the turbulence length scales to the heliostat chord length.
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© 2020 Author(s). Published by AIP Publishing.