摘要
以矿用对旋轴流局部通风机为研究对象,对风机叶片部分做了穿孔设计,建立了叶片穿孔前后风机的整体模型,在Fluent中进行了稳态模拟、非稳态模拟、噪声预估。结果证明,叶片穿孔能有效抑制叶顶泄流及叶片非工作面涡流产生和脱落,从而使声功率级下降,使两级叶轮通过频率的声压值降低,穿孔后宽频噪声成为主要噪声源。
Taking the counter-rotating axial fan for mining as research object, punched holes in blades of fan, then established the overall model of fan with different blades. Steady state simulation, unsteady state simulation, and noise simulation were carried out in Fluent. The result shows that the blades with holes can effectively inhibit the flow leakage at blades＇tip, can inhibit generation and shedding of eddy at blades, hence the sound power level declined, the sound pressure at passing frequency of blades decreased, then the broadband noise became the main noise source.
作者
杨冰冰
李超宇
王松岩
YANG Bing-bing1,2, LI Chao-yu1,2, WANG Song-yan1,2(1. College of Mechanical Engineering, Taiyuan University of Technology, Taiyuan 030024, China; 2. Shanxi Provincial Engineering Laboratory and Research Center for Mines Fluid Control, Taiyuan 030024, Chin)
出处
《煤炭技术》
CAS
2018年第8期243-245,共3页
Coal Technology
基金
2016年度山西省科技重大专项招标项目(MJ2016-02)
关键词
轴流风机
气动噪声
叶片穿孔
声功率级
声压级
axial flow fan
aerodynamic noise
blade with holes
sound power level
sound pressure
