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Development of Prediction Method for Wind Noise Caused by Airflow Around Front Pillar

[+] Author Affiliations
Yasuhiko Okutsu, Naoki Hamamoto

Mitsubishi Motors Corporation, Okazaki, Aichi, Japan

Robert Powell

Exa Corporation, Livonia, MI

Long Wu

Exa Japan Inc., Yokohama, Kanagawa, Japan

Paper No. AJK2011-23002, pp. 831-839; 9 pages
doi:10.1115/AJK2011-23002
From:
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference
  • ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 1, Symposia – Parts A, B, C, and D
  • Hamamatsu, Japan, July 24–29, 2011
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-4440-3
  • Copyright © 2011 by JSME

abstract

To control high frequency wind noise upper than 1 kHz is important to ensure the comfort for a driver and passengers when vehicles cruise at high speed. Therefore the prediction method for high frequency wind noise inside a cabin has been required for development of a vehicle. This paper describes about the prediction method for high frequency wind noise from numerical simulation results. In this study, wind noise caused by airflow around a front pillar is predicted. We have predicted wind noise by visualizing noise sources and pressure fluctuation on vehicle surfaces in recent years. Although an inferior-to-superior relationship can be predicted from these results, it was difficult to estimate quantitative interior noise level. In this research, the SEA code is examined to predict such noise level. The SEA code has confirmed showing a qualitative and almost quantitative consistency of measured and calculated SPL at the head area of a front passenger seat.

Copyright © 2011 by JSME

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