汽车工程学报2018，Vol.8Issue(2)：130-136,7.DOI:10.3969/j.issn.2095-1469.2018.02.07
高速轿车外场气动噪声仿真分析
Numerical Investigation on Exterior Aerodynamic Noise of a High-speed Sedan
摘要
Abstract
Aerodynamic noise is the main source of noise for high-speed vehicles. In this paper,the simulation of exterior aerodynamic noise around a sedan model was conducted,using a hybrid acoustic finite-infinite element method based on Lighthill analogy. The results show that the sedan aerodynamic noise is mainly concentrated inside mirror areas and tire areas. The dipole sources are the dominant noise source, spreading across the low-middle frequencies regions,while the quadrupole sources concentrate on high frequency band.The maximum SPL at monitoring points is 82 dB.关键词
气动噪声/大涡模拟/Lighthill声类比/有限元/轿车Key words
aerodynamic noise/large eddy simulation/Lighthill analogy/finite element/sedan分类
交通工程引用本文复制引用
杜敏韬,汪怡平,彭城坚..高速轿车外场气动噪声仿真分析[J].汽车工程学报,2018,8(2):130-136,7.基金项目
国家自然科学基金(51775395) （51775395）
