Analysis on the Wind Loadings on Dish Solar Concentrator Based on Virtual Wind Tunnel Experiment with Constant Wind

摘要

For the problem of the optimal shelter posture of dish solar concentrator, in this paper, virtual wind tunnel experimental with constant wind is implemented for simulation analysis of the wind loadings on dish solar concentrator at different attitudes and wind speeds. The results show that the amplitudes of the wind force and torque on the dish solar concentrator increase by 110% at least when the wind speed changes from 15 m/s to 25 m/s. Additionally, when the azimuth angle is α = 0°, the side force, tumbling moment and azimuth moment of the concentrator reach to the minimum value while the drag force, lift force and pitching moment reach to the maximum value, which will be beneficial to the stability of the dish solar concentrator to a great extent. Moreover, the forces and torques on the dish solar concentrator at different azimuth angles based on virtual wind tunnel experiment are identical when the altitude angle is β = 90° due to its structure of disk.