STUDY ON WIND PRESSURE DEFORMATION OF PENTAGONAL HELIOSTAT BASED ON DUAL LINEAR ARM DRIVE

Gao Bo; Xu Xiaocheng; Yang Xiangyu; Huang Tao; Mao Kai

doi:10.19912/j.0254-0096.tynxb.2024-1206

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Acta Energiae Solaris Sinica ›› 2025, Vol. 46 ›› Issue (11) : 412-418. DOI: 10.19912/j.0254-0096.tynxb.2024-1206

STUDY ON WIND PRESSURE DEFORMATION OF PENTAGONAL HELIOSTAT BASED ON DUAL LINEAR ARM DRIVE

Gao Bo, Xu Xiaocheng, Yang Xiangyu, Huang Tao, Mao Kai

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Abstract

For the pentagonal heliostat driven by a dual linear-arm drive, a model of a regular pentagonal heliostat with an area of 48.5 m² was constructed, and numerical simulations were conducted using the SST k-ω turbulence model. The primary objective of the study was to evaluate the surface wind pressure and surrounding flow field characteristics, as well as to analyze the drag coefficient and pressure distribution at different elevation angles. Additionally, the impact of wind pressure on mirror deformation was examined using a static structural analysis module. The simulation results indicated that the drag coefficient gradually increases with the elevation angle, reaching a maximum value of 1.28. Furthermore, the structure-flow coupling analysis revealed that the deformation of the mirror reaches its maximum at an elevation angle of 90°, with a deformation value of 6.24 mm, and the maximum deformation occurs at the sharp corner above the heliostat.

Key words

heliostat / flow field / deformation / wind load / numerical simulation

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Gao Bo, Xu Xiaocheng, Yang Xiangyu, Huang Tao, Mao Kai. STUDY ON WIND PRESSURE DEFORMATION OF PENTAGONAL HELIOSTAT BASED ON DUAL LINEAR ARM DRIVE[J]. Acta Energiae Solaris Sinica. 2025, 46(11): 412-418 https://doi.org/10.19912/j.0254-0096.tynxb.2024-1206

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