Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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A Numerical Study of the Effect of Small Passenger Car's Grille Shape on the Aerodynamic Performance

소형 승용 차량의 그릴 형상이 차량의 공력 성능에 미치는 영향에 관한 수치해석 연구

  • Kim, Jaemin (Department of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Cho, Hyeongkyu (Department of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Taekgi (Department of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Moonsang (Department of Aerospace and Mechanical Engineering, Korea Aerospace University) ;
  • Kim, Yongsuk (CAE Integration Division, GM Korea Company) ;
  • Kim, Yongnyun (CAE Integration Division, GM Korea Company)
  • 김재민 (한국항공대학교 항공우주 및 기계공학과) ;
  • 조형규 (한국항공대학교 항공우주 및 기계공학과) ;
  • 김택기 (한국항공대학교 항공우주 및 기계공학과) ;
  • 김문상 (한국항공대학교 항공우주 및 기계공학과) ;
  • 김용석 (한국지엠 CAE 담당) ;
  • 김용년 (한국지엠 CAE 담당)
  • Received : 2014.07.02
  • Accepted : 2014.09.02
  • Published : 2015.01.01
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Abstract

A numerical parametric study has been accomplished to figure out the effect of grille shape built in a small passenger car on the aerodynamic performance such as drag and mass flow rate through CRFM(Condenser Radiator Fan Module). Three grille opening parameters and three grille mesh parameters are selected and adopted to a simple shape passenger car model. This research will provide a design guideline for grille opening geometry and mesh shape in the grille. FLUENT, which is very well known commercial code, hires k-${\epsilon}$ turbulence model at the driving speed of 110km/h with moving wall boundary condition. A porous media condition is prepared to estimate the pressure drop amount through CRFM parts.

Keywords

References

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Cited by

  1. Grille design for passenger car to improve aerodynamic and cooling performance using CFD technique vol.17, pp.6, 2016, https://doi.org/10.1007/s12239-016-0094-x