燃料电池车用旋涡风机气动噪声及影响因素  

Analysis of aerodynamic noise and influence factors of a regenerative blower used in air supply system of fuel cell cars

作　　者：左曙光[1] 韩惠君[1] 苏虎[1] 韦开君[1] 赵愿玲[1] 

机构地区：[1]同济大学新能源汽车工程中心,上海201804

出　　处：《吉林大学学报（工学版）》2013年第6期1453-1458,共6页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51075302);高等学校博士学科点专项科研基金项目(20100072110027)

摘　　要：建立了旋涡风机二维CFD模型,对其内部流场及远场气动噪声进行了计算。计算结果表明:旋涡风机噪声频谱中的42倍频与风机入出口的叶片数目以及隔板与叶轮间的径向间隙均有关。径向间隙大于0.5mm或小于0.5mm时,旋涡风机产生的噪声峰值频率是不同的。然后,采用相对极差分析了叶片弯角、叶片数目、叶轮与隔板的径向间隙这3个叶轮参数对旋涡风机远场气动噪声的影响,确定了影响噪声的主次因素。结果表明:叶轮与隔板的径向间隙对旋涡风机远场噪声的影响最大。The internal flow field and the far-field aerodynamic noise of a regenerative are calculated using a two-dimensional Computational Fluid Dynamic （CFD） model, and the simulation results are analyzed. It is shown that, in the far-field noise spectrum of the blower, the frequency, which is 42 times of the blower rotation frequency, is related to the number of blades of the inlet/outlet and the radial clearance between the impeller and the partition of the easing. The far-field noise peak frequencies of the blower are different when the clearance is larger or smaller than 0. 5 mm. The effects of impeller parameters, such as the blade angle, blade number, and the clearance between the impeller and the partition of the casing, on the far-field noise of the blower are analyzed using the range analysis. The influence order of these parameters is determined, and the radial clearance has maximum influence on blower noise.

关 键 词：车辆工程 旋涡风机 气动噪声 径向间隙 叶轮参数 

分 类 号：TB5[理学—物理] U463[理学—声学]