Buffeting noise of automobile at running speeds

Ik Hyun Bai, Yong Woo Jo, Sang Hyeok Lee, Young June Moon, Wan Ho Jeon, Jung Ill Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution


In this paper, automobile buffeting noise is investigated by an LES-based CAA method. A simplified model car, employed for a wind tunnel experiment at the Hyundai Motor's company is considered. The sunroof and rear-window buffeting noises are examined by solving the three-dimensional, filtered, compressible Navier-Stokes equations with a sixth-order compact scheme and a four-stage Runge-Kutta method. It was found that the passenger room acts as a Helmholtz resonator for sunroof and rear-window buffeting noises with two different effective length scales: a vertical size of recirculating flow over the sunroof and a diameter of the conical vortex generated from the A-pillar, respectively.

Original languageEnglish
Title of host publication19th AIAA/CEAS Aeroacoustics Conference
Publication statusPublished - 2013 Sep 16
Event19th AIAA/CEAS Aeroacoustics Conference - Berlin, Germany
Duration: 2013 May 272013 May 29


Other19th AIAA/CEAS Aeroacoustics Conference

ASJC Scopus subject areas

  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

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    Bai, I. H., Jo, Y. W., Lee, S. H., Moon, Y. J., Jeon, W. H., & Kim, J. I. (2013). Buffeting noise of automobile at running speeds. In 19th AIAA/CEAS Aeroacoustics Conference