A study on wind vibration response of a tower heliostat based on comparison of a rigid model and an aeroelastic model wind tunnel test

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Journal of Vibration and Shock ›› 2022, Vol. 41 ›› Issue (8) : 134-140.

LIU Zhenhua1，NIU Huawei1，LI Hongxing2，HE Shaohua2

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Abstract

The tower heliostat is an important concentrating device in the solar power tower plant, and the control load is wind load. A finite element model of the tower heliostat structure was established by ANSYS. The modal analysis shows that the frequency distribution of structure is dense, and the change of the wind attack angle has little effect on the low-order mode of the heliostat structure. Based on the pressure measurement wind tunnel test of the rigid model, the wind-induced vibration response of the tower heliostat was analyzed by ANSYS, and the aeroelastic model vibration test was carried out. The errors between the two are within 10%. The results show that the modes that affect the wind-induced vibration of the structure are mainly the first 3 orders, and the displacement response at the end of the main purlin is the largest. The wind vibration coefficient is recommended to be 1.57.

Key words

tower heliostat / rigid model / aeroelastic model / wind tunnel test / finite element analysis / wind vibration coefficient

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LIU Zhenhua1，NIU Huawei1，LI Hongxing2，HE Shaohua2. A study on wind vibration response of a tower heliostat based on comparison of a rigid model and an aeroelastic model wind tunnel test[J]. Journal of Vibration and Shock, 2022, 41(8): 134-140

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