Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Development of Wind Noise Analysis Procedure and Its Verification Using CFD Tool around an OSRVM

CFD를 이용한 OSRVM 주변의 공력소음 해석과정 개발 및 검증

  • Park, Hyun-Ho (Department of Aerospace and Mechanical Engineering, Graduate School of Korea Aerospace University) ;
  • Han, Hyun-Wook (Department of Aerospace and Mechanical Engineering, Graduate School of Korea Aerospace University) ;
  • Kim, Moon-Sang (School of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Ha, Jong-Paek (Aero/CFD CAE Team, GM Korea) ;
  • Kim, Yong-Nyun (Aero/CFD CAE Team, GM Korea)
  • 박현호 (한국항공대학교 대학원 항공우주 및 기계공학과) ;
  • 한현욱 (한국항공대학교 대학원 항공우주 및 기계공학과) ;
  • 김문상 (한국항공대학교 항공우주 및 기계공학부) ;
  • 하종백 (한국지엠 Aero/CFD CAE팀) ;
  • 김용년 (한국지엠 Aero/CFD CAE팀)
  • Received : 2011.09.07
  • Accepted : 2011.12.06
  • Published : 2012.07.01
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Abstract

The process of the wind noise analysis around an OSRVM is developed and is verified by simulating unsteady flow field past a generic OSRVM mounted on the flat plate at the Reynolds number of $Re_D=5.2{\times}10^5$ based on the mirror diameter. The transient flow field past a generic OSRVM is simulated with various turbulence models, namely DES-SA, LES Constant SGS, and LES Dynamic SGS. The sound radiation is predicted using the Ffowcs- Williams and Hawkings analogy. For the present simulation, the 6.35million cells are generated. Time averaged pressure coefficients at 34 locations on the surface of the generic OSRVM are compared with the available experimental data. Also, 12 Sound Pressure Levels located on the surrounding mirror are compared with the available experimental data. Both of them show good agreements with experimental data.

Keywords

References

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