Effect of atmospheric temperature and droplet size variation on ice accretion of wind turbine blades
Effect of atmospheric temperature and droplet size variation on ice accretion of wind turbine blades
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DOI：
10.1016/j.jweia.2010.06.007
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发表时间：
2010-12-01
影响因子：
4.8
通讯作者：
Sundsbo, Per A.
中科院分区：
文献类型：
--
作者：
Homola, Matthew C.;Virk, Muhammad S.;Sundsbo, Per A.
5 MW变桨距风力涡轮机叶型积冰及流场特性的数值研究（NACA 64618）进行了研究，以了解大气温度和液滴尺寸变化对冰生长速率和形状的影响。20度结果表明，随着水滴尺寸的增加，冰的生长也会增加，而大气温度的变化会显著影响积冰的形状。在低温下观察到流线形冰的形状，而在较高温度下发现喇叭形积冰。结果表明，对于结冰叶片型线，与雨凇相比，雾凇冰情况下空气动力特性的变化最小版权所有© 2010 Elsevier Ltd
A numerical study of ice accretion and the resultant flow field characteristics of a 5 MW pitch controlled wind turbine blade profile (NACA 64618) have been carried out to understand the effects that atmospheric temperature and droplet size variations have on the rate and shape of ice growth Resultant aerodynamic characteristics of the blade profile were analysed at different angles of attack ranging from -10 degrees to +20 degrees Results show an increase in the ice growth with the increase of droplet size whereas change in atmospheric temperature significantly affects the shape of accreted ice Streamlined ice shapes were observed for low temperatures whereas horn shape ice accretion was found at higher temperatures Results show that for the Iced blade profiles changes in the aerodynamic characteristics are least prominent for the case of rime ice as compared to glaze ice (C) 2010 Elsevier Ltd All rights reserved