A sustainable galloping piezoelectric energy harvesting wind barrier for power generation on railway bridges

Xinxin Xue, Hongjun Xiang, Yiman Ci and Jingyan Wang

Energy, 2025, vol. 320, issue C

Abstract: Wind barriers are essential for ensuring the safety of high-speed trains in areas with strong crosswinds. A key challenge in such environments is providing a reliable power supply for monitoring equipment. In this work, a galloping piezoelectric energy harvesting wind barrier (GPEHWB) is proposed to power wireless sensing nodes (WSNs) along the railway. The GPEHWB is designed to optimize wind energy harvesting while maintaining its windproof function. The study explores the flow field and wind speed variation within the wind barrier hole. The analysis and design process for integrating the wind barrier with the galloping piezoelectric energy harvester (GPEH) is given. A theoretical model for predicting the performance of the GPEHWB is established. The accuracy of the model is validated by experimental data. The results show that the GPEHWB unit can generate a maximum power of 0.233 mW. When the incoming wind speed (Ui) reaches 9 m/s, the wind speed inside the wind barrier hole increases by 12.5 %, leading to a 38.5 % increase in output power. The increase in wind speed inside the wind barrier hole enhances energy output. The GPEHWB can provide a stable power supply for railway applications.

Keywords: Wind energy harvesting; Railway bridge; Wind barrier; CFD analysis; Galloping; Piezoelectric (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:320:y:2025:i:c:s0360544225007777

DOI: 10.1016/j.energy.2025.135135

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