Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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THE AERO-ACOUSTIC ANALYSIS FOR EACH PART OF DOUBLE ARM PANTOGRAPH OF HIGH SPEED TRAIN

전산해석을 통한 고속철도 더블암 팬터그래프의 부재별 공력소음특성 연구

  • Lee, S.A. (Dept. of Mechanical & Aerospace Engineering, Seoul Nat. Univ.) ;
  • Kang, H.M. (Dept. of Mechanical Engineering, Dongyang Mirae Univ.) ;
  • Lee, Y.B. (1st R&D Institute, Agency for Defense Development) ;
  • Kim, C.W. (Aerodynamics Team, Korea Aerospace Research Institute) ;
  • Kim, K.H. (Dept. of Mechanical & Aerospace Engineering/Institute of Advanced Aerospace Technology, Seoul Nat. Univ.)
  • 이상아 (서울대학교 기계항공공학부) ;
  • 강형민 (동양미래대학교 기계공학부) ;
  • 이영빈 (국방과학연구소 1본부) ;
  • 김철완 (한국항공우주연구원 공력성능팀) ;
  • 김규홍 (서울대학교 기계항공공학부 항공우주신기술연구소)
  • Received : 2015.05.21
  • Accepted : 2015.06.17
  • Published : 2015.06.30
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Abstract

In this study, an aero-acoustic analysis around pantograph of a high speed train is performed. Computational technique and grid system is validated with wind tunnel test result and unsteady acoustic pressure data are used for analyzing noise level of each part of pantograph. FLUENT is used for flow analysis and LES(Large Eddy Simulation) is applied for analyzing turbulent flow. For acoustic analysis, Ffowcs Williams-Hawkings(FW-H) acoustics model is used and it bring the aero-acoustic characteristic of pantograph. As the result, contact strip, knee, substructure of pantograph is confirmed as a main source of aero-acoustic noise and it is dealt in various frequencies. The result is expected to help building improved grid system.

Keywords

References

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