Experimental and Numerical Study of Wind Noise Caused by Cowl Area on Volvo XC60  

作　　者：Olga Roditcheva Par Harling Dragos Moroianu Holger Bemhardsson 

机构地区：[1]Volvo Cars, Noise and Vibration Centre, Gothenburg 40531, Sweden [2]Chalmers University of Technology, Gothenburg 41296, Sweden

出　　处：《Journal of Mechanics Engineering and Automation》2016年第3期109-117,共9页机械工程与自动化（英文版）

摘　　要：This paper presents a detailed experimental and numerical study of aerodynamically produced noise which occurs due to turbulent structures created by the cowl cavity and side mirror. Measurements were carried out at Volvo aerodynamical wind tunnel on a Volvo XC60 production model. The configurations considered here are： side mirror On/Off with the cowl cavity open/closed. The results of exterior sound source mapping （with the intensity probe placed in the flow stream） have been compared with the results of the measurements inside the car. The contribution of the cowl area to overall wind noise level is measured in terms of AI% （Articulation Index） inside the compartment. It was shown that increase in AI by 2% could be attributed to the cowl generated wind noise. Transient numerical simulations of the turbulent flow around the car have been performed for all configurations. The results of the simulations show similarity to experimental results and give insight to the flow structures around the car.

关 键 词：Aerodynamically produced noise wind noise turbulent flow experimental and numerical methods for aeroacoustics sound sources ground vehicles. 

分 类 号：U469.2[机械工程—车辆工程] TN47[交通运输工程—载运工具运用工程]