Simulation analysis of effects of wind field and photovoltaic DC field allocation on aeolian-sand structure

The sand transport and aeolian-sand structure of the array in 0-50 cm with different wind speeds, wind direction, power station array spacing, and whether or not there are the wheat straw sand barrier were analyzed by wind tunnel simulation, which aimed to investigate the effect of photovoltaic array on drifting sand with different allocation of wind field and photovoltaic DC field. The results showed that: 1) the sand transport rate of the array was proportional to the wind speed, and inversely proportional to the sand collection height in 0-50 cm. And the polynomial simulation of the sand transport rate under 3 kinds of wind speed was optimal. 2) The sand transport rate of the array and its characteristic value (λ) of aeolian-sand flow were the highest when the wind was south. And the best simulation of the south wind (180°), northeast wind (45°) and northwest wind (315°) were polynomial, logarithmic and exponential function, respectively. 3)The sand transport rate of the array in 20 cm (reduced in equal proportion to electric field) was the highest. 4) The characteristic value of aeolian-sand flow structure was 1.75 when the wheat straw sand barrier was laid at the front of the array, indicating unsaturated status and sand carrying capacity of aeolian-sand flow at this time.