【作者】 陈鑫； 王登峰； 杨昌海； 耿小华；

【Author】 Chen Xin;Wang Dengfeng;Yang Changhai;Geng Xiaohua;State Key Laboratory of Automobile Dynamic Simulation,Jilin University;

【机构】 吉林大学 汽车动态模拟国家重点实验室；

【摘要】 对于轿车高速行驶时的车内噪声,除了来源于动力总成的振动和声辐射、从路面传递来的随机激励和轮胎跳动输入等以外,还有车身表面的空气动力学影响。建立了CFD仿真模型,确定车身表面空气动力学最剧烈的区域和位置。采用非稳态仿真计算得到前窗监测点的平均气动压力谱,作为动力载荷输入给仿真模型,用于轿车车内噪声的精确分析,这是轿车车内噪声控制进一步优化的基础。更多还原

【Abstract】 For the analysis of car interior noise at high speed,the influence of body surface aerodynamics should be taken into account,besides the vibration and acoustic radiation of powertrain,the random excitation from road and the vibration inputs of tires,and so on.A model of CFD was built.And the most turbulent area of body surfaces was located.The spectrum of average aerodynamic pressure of monitoring points on front side door window was also obtained by unsteady calculation.So,the more accurate analysis of car interior noise can be processed due to loading the power inputs listed above to the simulation model,which is looked as the foundation of further optimization of car interior noise control.更多还原