矿用对旋轴流风机气动噪声分析  

Aerodynamic Noise Analysis of Contra Rotating Axial-flow Fan Used in Mine

作　　者：曹雷[1] 李意民[1] 雷蕾[1] 

机构地区：[1]中国矿业大学电力工程学院,徐州市221008

出　　处：《风机技术》2011年第4期13-16,共4页Chinese Journal of Turbomachinery

摘　　要：针对矿用KDF-5局部通风机振动剧烈和噪声大等问题,通过实验采集风机内部流场压力脉动和出口处噪声信号,利用数值模拟,对风机内部流场及气动噪声进行分析。说明不同工况时风机内部流动对风机噪声的影响,并预估出风机出口处噪声频谱特性。给出风机两级叶片的静压时间导数,分析主要噪声源的位置。找出降低风机噪声的途径,改进风机的气动参数。Aiming at the problems of intensive vibration,heavy noise in KDF-5 local fan used in mine,the pressure fluctuation in internal flow field and the outlet noise signals are collected by experiments and the numerical simulation is applied to analyze the internal flow field and aeroclynamic noise.It is stated that the influence of internal flowing on noise under different operations and the noise spectrum characteristics of fan outlet is predicted.The static pressure time derivative of two stage blades is given and the position of main noise resource is analyzed.

关 键 词：气动噪声 压力脉动 数值模拟 

分 类 号：TH432.1[机械工程—机械制造及自动化]