摘要
为了减少汽车冷却风扇产生的噪声,模仿猫头鹰翅膀的条纹状突起结构和翅膀前缘的锯齿状结构,对风扇叶片进行仿生学设计。通过正交实验设计确定9种风扇叶片的设计方案,对9种叶片方案进行计算流体动力学仿真分析,仿真结果表明,经仿生设计后的大部分叶片都起到降噪的效果。将由3D打印所得的叶片模型安装在原有的风扇叶片上进行噪声实验,对实验结果进行极差分析,研究各设计参数对风扇降噪效果的影响。通过极差分析得出,对降噪效果影响最大的因素是叶片条纹半径,其次是条纹所在圆弧间距离,然后是齿槽半径,最后是齿槽所在圆弧间距离。该研究对于汽车冷却风扇的降噪设计具有一定的参考价值。
In order to reduce the noise of an automobile cooling fan,the bionic design of the fan′s blades is done by imitating the stripe like protrusion structure of owl wings and the serrated structure of front edge of the owl wings.Through orthogonal experimental design,nine fan blade design schemes are prepared,and their computational fluid dynamics simulation analysis is carried out.The simulation results show that most of the blades after the bionic design have the function of noise reduction.The 3D printed blade models are installed to replace the original fan blade for noise experiment.The range analysis of the experimental results is carried out to study the influence of various design parameters on the noise reduction effect of the fan blades.Through the range analysis,it is concluded that the biggest factor affecting the noise reduction effect is the blade stripe radius,followed by the distance between the circles where the stripes are located,then the cogging radius,and finally the distance between the circles where the cogging is located.This research has some reference value for the noise reduction design of automobile cooling fans.
作者
董月千寻
郭浩
王书文
DONG Yueqianxun;GUO Hao;WANG Shuwen(School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《噪声与振动控制》
CSCD
北大核心
2022年第4期196-200,共5页
Noise and Vibration Control
基金
上海市科委重点支撑资助项目(18060502400)
上海市自然科学基金资助项目(21ZR1445000)。
关键词
声学
仿生设计
流体流动数值模拟
风扇叶片
正交实验
acoustics
bionic design
numerical simulation of fluid flow
fan blade
orthogonal experiment
