Visualizing Noise Sources in an Aero-Acoustic Wind Tunnel with Real-Time Acoustic Beamformers

date February 12, 2016
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Friday, February 12, 2016 4:00 p.m. in ETC 4.15

Kurt Veggeberg
Business Development Manager, Test Cell Applications
National Instruments
Austin, Texas

The Hyundai Aero-acoustic Wind Tunnel (HAWT) is a ¾ semi-open jet test section with a closed circuit that was designed to improve aerodynamic and wind noise characteristics of vehicles. The $40 Million facility was recently upgraded for visualizing wind noise. This is a part of a campaign by Hyundai to improve their quality which is paying off in improved J.D. Power rankings. Three 96 channel sound cameras were used for making measurements simultaneous from the side and overhead. An additional array was placed on the turntable to facilitate measurements underneath the vehicle being tested. In addition a portable as well as panoramic sound camera system was developed for use in visualizing noise sources in the car interior. This presentation will include a live demonstration of the SeeSV Sound Camera used for making the interior cabin noise measurements along with samples of a variety of tests of real world applications.