摘要
风力机叶片覆冰会使风力发电效率下降并且威胁风力机组的安全运行。本文采用Fluent中的欧拉多相流模型,通过添加质量传递以及对流换热系数计算模型等,实现了对风力机叶片表面覆冰的二维数值模拟,结果表明:覆冰主要出现在叶片的前缘迎风面,且驻点附近覆冰最多;当增大翼型攻角时,驻点向翼型的下部尾部移动,最大覆冰位置也相应地移动;随着时间的推移,叶片表面覆冰增多。
Ice accretion on the blades reduces the efficiency of the wind power plant and even leads to unplanned downtime in severe cases.In this paper,Fluent is used to numerical simulate the ice accretion on wind turbine blades and the mass transfer model and thermodynamic model are added to the Euler multiphase flow by the User-Defined Functions(UDF).The results show that ice mainly accumulates on leading edge of the blade and the quantity of ice gets the maximum value near the stagnation point.We reach the conclusion that with the attack angle growing,the stagnation point of the blade moves towards the trailing edge,with which the maximum value of ice quantity moves.Besides,the quantity of ice on the blade increases over time.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2014年第4期770-773,共4页
Journal of Engineering Thermophysics
基金
国家973计划(No.2010CB277305)
教育部博士点专项基金(No.20130002110073)
关键词
风力机叶片
覆冰
数值模拟
多相流
wind turbine blades
ice accretion
numerical simulation
multiphase flow
