数字农科院2.0

Aerodynamic performance degradation of offshore wind turbine blades under icing with varying angles of attack

文献类型： 外文期刊

作者： Zhongqiu Mu;Guizhong Tian;Xiaoming Feng;Senlin Mu;Fanting Kong;Bin Zhang;Xiangyi Meng

作者机构：

关键词： Aerodynamic performance;Blade;Icing;Numerical simulation;Offshore wind turbine;Wind tunnel test

期刊名称： Ocean Engineering

ISSN： 0029-8018

年卷期： 2025 年 341 卷

页码：

收录情况： SCIE（2025版） ; ; EI（2025版）

摘要： Ice accretion on offshore wind turbine blades under cold and humid marine environments significantly deteriorates aerodynamic performance and threatens operational safety. This study systematically investigates the coupled effects of angle of attack and saline atmospheric icing on the aerodynamic behavior of a NACA0018 blade airfoil, combining wind tunnel experiments and computational fluid dynamics (CFD) simulations. Glaze and rime ice conditions were simulated with varying salinity (0 mg/m3 and 8 mg/m3) across a range of attack angles (0 °–20°). Ice accumulation characteristics were quantitatively evaluated using the dimensionless icing area ratio (DIAR) and average icing thickness (AIT). Results reveal that increasing salinity mitigates ice accretion, especially under glaze ice, by reducing both DIAR and AIT. However, this mitigating effect diminishes under rime ice, where severe asymmetric accretion dominates at higher attack angles. Aerodynamic analysis demonstrates that icing induces substantial reductions in lift coefficient (CL) and lift-to-drag ratio (K) while increasing drag, with rime ice without salinity causing the most severe degradation. Flow field analysis further shows enhanced flow separation and earlier stall onset induced by icing, particularly under rime conditions. These findings provide new insights into offshore blade icing mechanisms and offer practical guidance for optimizing anti-/de-icing strategies and aerodynamic designs for offshore wind turbines operating in cold marine climates.

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