王龙 李相伟 胡南云 李亮 周毅钧

摘 要：外场工作风力机叶片会受到环境腐蚀，导致风力发电机气动性能下降，发电效率降低。为研究腐蚀翼型的气动性能变化，建立9种腐蚀模型，计算4种风速（30m/s、35m/s、40m/s、45m/s）下腐蚀翼型的气动性能，分析翼型形状与腐蚀位置的变化对翼型气动性能的影响。数值模拟结果表明来流风速与翼型的升阻力成线性关系;S803翼型的气动性能优于S802和DU93翼型，DU93翼型发生腐蚀缺陷，气动性能表现最差;高速流体流过翼型缺陷位置，在缺陷位置发生流动分离形成涡旋流场，导致翼型气动性能降低。研究结果有利于恶劣环境下的风力机叶片选型及叶片的后期维护。

关键词：腐蚀翼型;气动性能;高风速;流动分离

中图分类号： TM315文献标志码：A

文章编号：1672-1098（2021）02-0016-07

收稿日期：2020-09-30

基金项目：安徽省自然科学基金资助项目（1708085QE123）

作者简介：王龙（1984-），男，安徽蚌埠人，副教授，博士，研究方向：风力机设计及风力机振动特性。

Research on Aerodynamic Characteristics of Corroded Airfoil under High Wind Speed

WANG Long1，LI XiangWei1， HU NangYun2， LI Liang3， ZHOU YiJun1

（1.School of Mechanical Engineering， Anhui University of Science and Technology， HuainanAnhui 232001，China;2.SafetyEvaluation DepartmentNanchang Anda Security Technology Consulting Co. Ltd.， NanchangJiangxi 330000， China;3.School of Mechanics and Optoelectronics Physics， Anhui University of Science and Technology， HuainanAnhui 232001，China）

Abstract：In the working field， the blades of wind turbines could be corroded by the environment， which would cause the aerodynamic performance of the wind turbine to decrease. Then the efficiency of power generation would decrease. In order to study the changes in the aerodynamic performance of the corroded airfoil， nine corrosion models were established to calculate the aerodynamic performance of the corroded airfoil under four wind speeds （30m/s， 35m/s， 40m/s， 45m/s）. The influence were analyzed of the change of the shape and position of the corroded airfoil to its aerodynamic performance. Numerical simulation results show that the incoming wind speed has a linear relationship with the lift drag of the airfoil， that among the three types of airfoils， the aerodynamic performance of the Type S803 is better than the Types of S802 and DU93 and the aerodynamic performance of the Type DU93 will be the worst when it has a corroded defect and that when the high-speed fluid flows through the defect location of the airfoil， it will form a vortex flow field resulting in a decrease of the aerodynamic performance. The research results are conducive to the selection of wind turbine blades and the later maintenance in harsh environments.

Key words：corroded airfoil; aerodynamic performance; high wind speed; flow separation

风沙、雨水长时间冲刷风力机叶片后，会导致叶片表面出现腐蚀现象，改变叶片表面粗糙度，该现象对风力机叶片发电效率极为不利。一旦该缺陷得不到修复，有可能会导致叶片出现裂纹扩展的现象，将严重影响风力发电机的发电稳定性和使用寿命。

文献[1]采用数值模拟方法，对FFA-W3-301 和FFA-W3-211翼型的气动性能进行分析，模拟结果的升力系数与阻力系数与风洞实验[2]的结果有较好的一致性，同时发现翼型表面粗糙度对风力机风能转化率有很大影响。文献[3-4]等根据……