Vol18 No.5: 1340-1351
【Title】Wind-sand movement characteristics and erosion mechanism of a solar photovoltaic array in the middle of the Hobq Desert, Northwestern China
【Author】TANG Guo-dong1,2; MENG Zhong-ju1,2*; GAO Yong1,2; DANG Xiao-hong1,2
【Addresses】1 College of Desert Control Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; 2 Inner Mongolia Key Laboratory of Aeolian Physics and Desertification Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
【Corresponding author】MENG Zhong-ju
【Citation】Tang GD, Meng ZJ, Gao Y, et al. (2021) Wind-sand movement characteristics and erosion mechanism of a solar photovoltaic array in the middle of the Hobq Desert, Northwestern China. Journal of Mountain Science 18(5). https://doi.org/10.1007/s11629-020-6273-2
【Abstract】The operation and power generation of utility-scale solar energy infrastructure in desert areas are affected by changes in surface erosion processes resulting from the construction ofsolar photovoltaic (PV) power stations. However, few studies have addressed the interactions between solar PV arrays and aeolian erosion processes. In this study, wind flow field characteristics and the vertical distribution of sediments were investigated in the near-surface transport layer at three different locations with respect to the solar PV arrays in a 200 WM-p PV power station in the central Hobq Desert, northwestern China. The results indicate that the sediment transport varied around the panels, with the greatest transport occurring between the panels, followed by behind and in front of the panels. The sediment ﬂuxes of all of the observation sites obey an exponential function. The secondary flow field zones formed around the PV panels: the conflux accelerating zone between the panels, the resistance decelerating zone of the under panels, and the transition zone of the rapid velocity increase in front of and behind the panels. This resulted in a greater shear force in front of the panels under the downward flow diversion effect of PV panels, and the wind erosion depressions were finally formed here. The results of this study provide information for planning better technical schemes for wind-sand hazards at solar PV power stations, which would ensure operational stability and safety in desert areas.
【Keywords】Solar photovoltaic array; Wind flow field characteristics; Sediment transport; Hobq Desert