Hybrid CFD/FEM-BEM simulation of cabin aerodynamic noise for vehicles traveling at high speed

作     者：WANG YiPing ZHEN Xin WU Jing GU ZhengQi XIAO ZhenYi YANG Xue 

作者机构：Hubei Key Laboratory of Advanced Technology of Automotive Components Wuhan University of Technology State Key Laboratory of Automotive Simulation and Control Jilin University State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body Hunan University Wuhan Ordnance Noncommissioned officers School 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2013年第56卷第7期

页      面：1697-1708页

核心收录：

学科分类：082304[工学-载运工具运用工程] 08[工学] 080204[工学-车辆工程] 0802[工学-机械工程] 0823[工学-交通运输工程] 

基　　金：supported by Wuhan Youth Chenguang Program of Science and Technology (Grant No. 2013070104010001) Fundamental Research Funds for the Central Universities (Grant No. 2012-IV-068) Hubei Key Laboratory of Advanced Technology of Automotive Components (Grant No.2012-07) Foundation of State Key Laboratory of Automotive Simulation and Control (Grant No. 20121111) the National Natural Science Foundation of China (Grant No. 50975083) 

主　　题：aerodynamic noise computational fluid dynamics large eddy simulation finite element method boundary element method 

摘      要：Flow passing a vehicle may lead to the increase of the cabin interior noise level through a variety of mechanisms. These mechanisms include vibrations caused by aerodynamic excitations and reradiation from the glass panels, exterior noise trans-mitted and leaked through door seals including gaps and glass edge, and transmission of airborne noise generated by the interaction of flow with body panels. It is of vital importance to predict both the flow fields and the acoustic sources around the ve-hicle to accurately assess the impact of wind induced noise inside the cabin. In the present study, an unstructured segregated finite volume model was used to calculate the flow fields in which a hexahedron grid is used to simplify the vehicle geometry.A large eddy simulation coupled with a wall function model was applied to predict the exterior transient flow fields. The mean flow quantities were thus calculated along the symmetry plane and the vehicle s side windows. A coupled FEM/BEM method was used to compute the vehicle s interior noise level. The total contribution of the interior noise level due to the body panels of the vehicle was subsequently analyzed.