基于剖面分割的大型风力发电机叶片三维覆冰增长特性分析

打开文本图片集

中图分类号：TM85 文献标志码：A 文章编号：1000-582X（2025）10-001-10

Analysis of three-dimensional icing characteristics of large wind turbine blades based on profile segmentation

FAN Caijin'，NIU Wei²，ZHUO Ran'，CHEN Peilong²，LIU Lei’，MAO Xianyin²， HUANG Huan²，YANG Qi² （1.Electric Power Research Institute，China Southern Power Grid， Guangzhou 510663，P.R.China; 2.Key Laboratory of Ice Prevention & Disater Reducing of China Southern Power Grid Co.，Ltd.，Electric Power Research Institute of Guizhou Power Grid Co.，Ltd.， Guiyang 55oo02，P.R.China）

Abstract： Ice accretion is a crucial factor affcting the safe and stable operation of wind turbines.Developing a numerical model for simulating ice formation on wind turbine blades is essential for predicting icing phenomena. Although the finite element method iscurrentlythe most widelyusedapproach，itiscomputationally intensiveand inefficient for large-scale applications. This study focuses on the blades of a 300kW wind turbine， employing a profilesegmentation method to investigate water droplet impact，freezing，and iceaccretion morphology changes on blade surfaces.A multiphase flow simulation model for air and liquidon the blade surface is developed，and formulas for local and overall collsion and freezing coefficients are derived.This approach enables characterization of overall water droplet impact and freezing behavior with reduced computational load.Results reveal that the water droplet collsion coefficient decreases gradually from the blade tip toward the root，with reductions exceeding 80% in the maximum values of β1 and a1 at approximately 0.5R. Maximum water droplet capture occurs near the blade tip （ 0.8R to 0.9R ），while significant ice accretion predominantly occurs between 0.5R and R .The overflow effect of the water film results in low freezing coeficients in the droplet colision zone buthighervalues in the overflowregion.Furthermore，closer tothe bladetip，ice growth exhibits greateriterative shape changes，and reduced linearity in the ice accretion rate.

Keywords： wind turbine blade; icing; water droplet collision; icing accretion morphology

近年来，风力发电已成为全球可再生能源的重要组成部分之一。（剩余10732字）