On the Possibilities and Limitations of Wind Noise Testing in the Aerodynamical Wind Tunnel at Volvo Cars
Paper in proceedings, 2016

This paper presents an experimental study of aeroacoustical sound sources generated by the turbulent flow around the side mirror of a Volvo V70. Measurements were carried out at the Volvo Cars aerodynamical wind tunnel (PVT) and at the aeroacoustical wind tunnel of Stuttgart University (FKFS). Several different measurement techniques were applied in both tunnels and the results were compared to each other. The configurations considered here were: side mirror with a cord and without the cord. The results discussed in this paper include intensity probe measurements in the flow around the side mirror, sound source localization with beamforming technique using a three-dimensional spherical array as well as standard measurements inside the car with an artificial head. This experimental study focused on understanding the differences between testing at the PVT and FKFS. It aimed to answer the question about how to overcome the difficulties in measuring small wind noise contributions in the aerodynamical wind tunnel with poor aeroacoustical treatment.

Author

Olga Roditcheva

Volvo Cars

Lennart Löfdahl

Chalmers, Applied Mechanics, Vehicle Engineering and Autonomous Systems

Simone Sebben

Chalmers, Applied Mechanics, Vehicle Engineering and Autonomous Systems

Pär Harling Ceng

Volvo Cars

Holger Bernhardsson

Volvo Cars

SAE Technical Papers

0148-7191 (ISSN)

Vol. 2016-June June

Areas of Advance

Transport

Driving Forces

Innovation and entrepreneurship

Subject Categories

Vehicle Engineering

Fluid Mechanics and Acoustics

DOI

10.4271/2016-01-1807

More information

Latest update

11/15/2018