摘要
为进一步优化幅流风机气动噪声性能,以某地铁空调系统中幅流风机为研究对象,提取雀鹰羽翼展向40%截面处作为参考,重构风机叶片。基于Fluent软件,采用Realizable K-ε模型,利用数值模拟方法和声类比FW-H方程,对仿鹰翼型叶片风机进行流场及气动噪声分析。结果表明,仿鹰翼型叶片风机较原风机风量增加2.67 m^(3)/min,叶轮效率提高3.07%,噪声降低2.34 dB。仿鹰翼型叶片可有效抑制漩涡噪声,改善幅流风机气动性能和声学性能。
A three-dimensional model is created for further optimization of the aerodynamic noise of radial-flow fans.With the radial-flow fan in a subway air-conditioning system as the research object,the 40%section of the sparrowhawk's wing is extracted as a reference to reconstruct the fan′s blade.Based on Fluent software and Realizable K-εmodel,the flow field and aerodynamic noise of the fan with falcon-wing imitative blades are analyzed by using numerical simulation and sound analogy with FW-H equation.The results show that compared with the original fan,the air volume of the improved fan is increased by 2.67 m^(3)/min,the impeller efficiency is increased by 3.07%,and the noise is reduced by 2.34 dB,which can effectively inhibit the vortex noise and improve the aerodynamic and acoustic performance of the radial-flow fan.
作者
高志鑫
何锋
赵京
刁雷
GAO Zhixin;HE Feng;ZHAO Jing;DIAO Lei(School of Mechanical Engineering,Guizhou University,Guiyang 550025,China;Guizhou Hanghang Technology Co.,Ltd.,Guiyang 550025,China)
出处
《噪声与振动控制》
CSCD
北大核心
2024年第1期92-95,191,共5页
Noise and Vibration Control
基金
贵州省科技计划资助项目(黔科合支撑[2022]一般251)。
关键词
声学
幅流风机
仿生叶片
流场仿真
气动性能
风机噪声
acoustics
radial-flow fan
bionic blade
flow field simulation
aerodynamic performance
fan noise
