Investigation on the unsteady aerodynamic coefficients of iced conductors and the applicability of quasi-static assumptions
Guanghui Liu, Zhongbin Lv, Bo Zhang, Chuan Wu, Yuhang Nie, Haobo Liang · 2026
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Description
Guanghui Liu and five colleagues measure how wind forces act on ice-coated power lines, and test a shortcut engineers use to predict dangerous line vibration. Ice building up on one side of a cable gives it a crescent shape that catches the wind unevenly. The 2026 team ran wind tunnel tests at speeds from 10 to 18 metres per second with ice layers 14, 24, and 33 millimetres thick. A swinging model captured how forces change as the cable moves, not just when it sits still.
Fitted formulas linked the steady forces to the wind angle. A neural network trained on the measurements then predicted forces for untested settings with fit values above 0.95. Converting steady values through the standard quasi-static shortcut matched the swinging-model data well in this range. The authors say the shortcut holds here, and the network gives designers a sharper tool for judging galloping risk on overhead lines.
Catalog record
| CREATOR | Guanghui Liu, Zhongbin Lv, Bo Zhang, Chuan Wu, Yuhang Nie, Haobo Liang |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 107237 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |