Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Analysis of Airflow due to the Configuration of Automotive Diffuser

자동차 디퓨저의 형상에 따른 공기흐름의 해석

  • Choi, Kyekwang (Department of Metal Mold Design Engineering, Kongju National UNIV.) ;
  • Cho, Jaeung (Division of Mechanical and Automotive Engineering, Kongju National UNIV.)
  • 최계광 (공주대학교 금형설계공학과) ;
  • 조재웅 (공주대학교 기계자동차공학부)
  • Received : 2020.08.04
  • Accepted : 2020.08.19
  • Published : 2020.11.30
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Abstract

This study was aimed at analyzing the velocity and pressure changes in the airflow corresponding to different configurations of a diffuser for three types of cars. According to the flow results of the three automotive models, in model 3, the vortex was formed slightly upward on the outlet plane, whereas in models 1 and 2, the vortex was generated lower than that in model 3. The values of the pressure distribution in model 3 were larger than those for models 1 and 2 on the planes located at the same distance from the end of the rear part. The maximum turbulent kinetic energies in models 1 and 2 occurred at a location lower than that in model 3. The shape corresponding to the airflow that enhanced the driving performance was determined through the flow analysis.

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References

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