旋涡风机壳体在内流场作用下的动力响应  

Dynamic Response of Vortex Fan Case Under Aerodynamic Excitation

作　　者：左曙光[1] 宋立廷[1] 

机构地区：[1]同济大学新能源汽车工程中心,上海201804

出　　处：《振动．测试与诊断》2013年第5期851-855,915,共5页Journal of Vibration,Measurement & Diagnosis

基　　金：国家自然科学基金资助项目(51075302);高校博士点基金资助项目(20100072110027)

摘　　要：数值模拟了旋涡风机壳体在内流场作用下的动力响应。通过对燃料电池车上旋涡风机声振测试试验,数值模拟风机内部三维非定常流场,并对旋涡风机壳体进行动力响应计算。分析结果表明,旋涡风机在内流场作用下振动的激振频率与固有频率发生共振,造成风机结构振动向外辐射噪声,同时此方法能够较为准确地模拟壳体在内部流场激励下的动力响应。Numerical simulation of dynamic response of the vortex fan case in the unsteady flow is carried out.With the experiment of vibration and noise of vortex fan in the fuel cell vehicle,the fan dynamic response in the unsteady flow excitation is calculated,and the numerical simulation results show that the vortex fan resonance is occurred which results in noise radiation because of its lower inherent frequency consistent with fan exciting frequency,and the method can accurately simulate the dynamic response of the internal flow excitation.

关 键 词：燃料电池车 旋涡风机 壳体 动力响应 声辐射 

分 类 号：TH442[机械工程—机械制造及自动化] TB532[理学—物理]