摘要
为降低轴流风机的气动噪声,借鉴了雕鸮羽毛的消音机理,将其羽毛的消音特征以条纹结构和锯齿形态的形式,在轴流风机叶片上进行重构,设计了耦合仿生轴流风机。同时采用试验优化的方法,与原轴流风机进行了模型对比试验,研究了条纹及锯齿参数对风机叶片气动噪声的影响。结果表明,耦合仿生轴流风机具有较低的气动噪声值。在1000、1100、1200、1300和1400r/min五种转速下,耦合仿生轴流风机的A声级值最大可分别降低4.9、4.5、4.6、4.9和5.8dB。
To reduce the aerodynamic noise of axial fan,the hush characteristics of eagle owl feather with serration and strip structure was applied to the design of a coupling bionic fan.According to the experimental optimization,contrast experiments on the coupling bionic fan blade and traditional fan blade were carried out.The influence of the bionic serration and strip structure on the aerodynamic noise was studied.The results show that the aerodynamic noise generated by the coupling bionic blade was lower than that generated by the traditional blade.With fan speeds of 1000 r/min,1100 r/min,1200 r/min,1300 r/min and 1400 r/min,the noise can be reduced at most 4.9 dB,4.5 dB,4.6 dB,4.9 dB and 5.8 dB respectively.
出处
《吉林大学学报(工学版)》
EI
CAS
CSCD
北大核心
2012年第1期79-84,共6页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(30940009
31071928)
国家自然科学基金国际合作项目(50920105504)
吉林省科技发展计划项目(20090340)
吉林大学研究生创新项目(20101017)
关键词
工程仿生学
降噪
生物耦合
轴流风机
engineering bionics
noise reduction
biological coupling
axial fan