亚声速轴流风扇静子宽频辐射噪声预报与参数影响研究  

Prediction and parameter study of rear-stator’s broadband radiated noise in subsonic axial fans

作　　者：武星宇 魏应三[1] 靳栓宝[1] 王东[1] 祝昊[1] 胡鹏飞[1] 孙方旭[1] WU Xingyu;WEI Yingsan;JIN Shuanbao;WANG Dong;ZHU Hao;HU Pengfei;SUN Fangxu(National Key Laboratory of Science and Technology on Vessel Integrated Power System,Research Institute of Special Electrical Science and Technology,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]中国人民解放军海军工程大学军用电气科学与技术研究所舰船综合电力技术国防科技重点实验室,武汉430033

出　　处：《振动与冲击》2021年第8期28-34,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金(51875573,51877213,51825703,51690181)。

摘　　要：为预报亚声速轴流风扇静子的宽频辐射噪声,介绍并推导了叶栅宽频辐射声功率计算表达式,考虑到工作在转子尾流中静子的情况,采用Park-Gauss尾流模型模拟转子尾流,建立转子尾流三维湍流波数频率谱模型,推导得到考虑转子尾流作用的静子宽频辐射声功率级计算公式。通过与Boeing和NASA风扇模型试验结果对比,结果显示上述公式较Hanson计算公式能够更准确的预报静子的宽频辐射声功率级,其预报结果与试验结果相差在5 dB以内。在NASA风扇模型的基础上改变静子叶片设计参数,显示减少静子叶片数可在高频段降低风扇的宽带噪声。To predict the broadband radiated noise of rear-stator’s in subsonic axial fans,a calculation formula of cascade broadband acoustic power was introduced and derived.On this base,considering the actual fan stator working in the rotor wake,the rotor wake turbulence wave spectrum model was established with the Park-Gauss wake model and the broadband acoustic power calculation formula of the interaction between the stator and the rotor was derived.The difference between the prediction result by above formula and the Boeing and NASA rear-stator test result is within 5 dB,and the prediction result is more accurate than the rear-stator broadband sound power predicted by the Hanson’s formula.For the NASA test model,reducing the blade number can suppression fan broadband noise at high frequencies.

关 键 词：静子 亚声速 转子尾流 叶片数 宽频辐射声功率 

分 类 号：V232.4[航空宇航科学与技术—航空宇航推进理论与工程]