水平轴风力机叶片气动噪声源分布特性的试验研究  

Experimental study on the distribution characteristics of aerodynamic noise sources on horizontal axis wind turbine blades

作　　者：代元军 姜金榜[2] 吴柯 郭程 DAI Yuanjun;JIANG Jinbang;WU Ke;GUO Cheng(College of Mechanical,Shanghai DianJi University,Shanghai 201306,China;College of Mechanical and Electrical Engineering,Xinjiang Agricultural University,Urumqi 830052,China;Key Laboratory of Energy Efficient Utilization Technology,Xinjiang Institute of Engineering,Urumqi 830091,China)

机构地区：[1]上海电机学院机械学院,上海201306 [2]新疆农业大学机电工程学院,新疆乌鲁木齐830052 [3]新疆工程学院能源高效利用技术重点实验室,新疆乌鲁木齐830091

出　　处：《中国测试》2023年第1期31-35,共5页China Measurement & Test

基　　金：国家自然科学基金项目(51966018,51466015);新疆高校科研计划自然科学重点项目(XJEDU2019I027)。

摘　　要：为寻找水平轴风力机额定来流风速不同转速工况时叶片气动噪声源分布特性的规律,利用30通道切片轮式阵列采用近场声全息法和远场波束形成法对水平轴风力机近尾迹区域进行噪声数据采集和声源成像分析。其试验结果表明:风力机气动噪声源在不同噪声频段下声压级随风力机转速的升高而增大,且气动噪声源位置未发生变化;在额定来流风速和额定转速下,随着气动噪声源频率由低频段向高频段过渡,其叶片气动噪声源位置由叶片中部沿叶片展向朝叶尖处规律移动,该结论可为风力机的降噪研究提供参考。In order to find out the distribution characteristics of the aerodynamic noise source of the horizontal axis wind turbine at different speeds of the rated incoming wind speed,the 30-channel slice wheel array was used to collect noise data and analyze the sound source image in the near wake area of the horizontal axis wind turbine by using near-field acoustic holography and far-field beamforming method.The test results show that the sound pressure level of the wind turbine aerodynamic noise source increases with the increase of wind turbine speed at different noise frequency bands,and the position of the aerodynamic noise source does not change.With the frequency transition from low frequency to high frequency at the rated incoming flow wind speed and rated speed,the position of the aerodynamic noise source moves from the middle of the blade along the blade to the tip regularly,this conclusion can provide a reference for wind turbine noise reduction research.

关 键 词：风力机 气动噪声 声压级 声源定位 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程] TB9[一般工业技术—计量学]