An experimental study on the aerodynamic performance degradation of a wind turbine blade model induced by ice accretion process
An experimental study on the aerodynamic performance degradation of a wind turbine blade model induced by ice accretion process
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DOI：
10.1016/j.renene.2018.10.032
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发表时间：
2019-04-01
期刊：
影响因子：
8.7
通讯作者：
Hu, Hui
中科院分区：
文献类型：
--
作者：
Gao, Linyue;Liu, Yang;Hu, Hui
对动态吸冰引起的风力机叶片气动性能退化进行了实验研究。实验研究在结冰研究隧道中进行，采用涡轮叶片模型，在典型的结冰条件下进行。在开始吸冰实验后，发现冰结构迅速地附着在叶片模型的上下表面上。不规则形状的冰结构对叶片模型周围的气流有很大的扰动，导致大范围的流动分离和非定常涡结构从结冰表面脱落。叶片模型的气动性能明显下降。结果表明，结冰引起的性能退化与叶片模型的攻角有很强的函数关系，攻角越小，性能退化越明显。在攻角为5.0的情况下，当吸冰实验进行600时，升力减小到原值的-12%时，阻力相应增加了4.5倍。详细的流场测量结果与气动力数据进行了关联，以阐明其物理基础。(C)2018爱思唯尔有限公司。保留所有权利。
An experimental study was conducted to characterize aerodynamic performance degradation of wind turbine blades induced by dynamic ice accretion process. The experimental study was performed in an Icing Research Tunnel with a turbine blade model under a typical glaze icing condition. Ice structures were found to accrete rapidly over both the upper and lower surfaces of the blade model after starting the ice accretion experiment. Irregular-shaped ice structures were found to disturb the airflow around the blade model greatly, resulting in large-scale flow separations and shedding of unsteady vortex structures from the ice accreting surface. The aerodynamic performance of the blade model was found to degrade significantly. The performance degradation induced by the ice accretion was found to be a strong function of the angle of attack of the blade model with more significant degradations at lower angles of attack. For the test case at the angle of attack of 5.0, while the lift decreases to only-12% of its original value after 600 s of the ice accretion experiment, the drag was found to increase 4.5 times correspondingly. The detailed flow field measurements were correlated with the aerodynamic force data to elucidate the underlying physics. (C) 2018 Elsevier Ltd. All rights reserved.