Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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A Study on the Numerical Analysis of Behavior of Spray Droplets and Internal Flow Field of Cylinder in Diesel Engine

디젤기관의 실린더내 유동 및 분무액적 거동의 수치적 연구(I)

  • 장영준 (부산대학교 공과대학 정밀기계공학과) ;
  • 박호준 (부산대학교 공과대학 정밀기계공학과) ;
  • 전충환 (부산대학교 대학원 정밀기계공학과) ;
  • 김진원 (부산대학교 대학원 정밀기계공학과)
  • Published : 1992.02.01
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Abstract

In this study, we calculated gas flow fields and distribution of fuel droplet and mass fraction using the CONCHAS-SPRAY code which modified to execute in IBM PC and changed three important factors, injection rate pattern (BASIC, I, II, III), different bowl shape and spray type. Especially vortices which be influenced by fuel-air mixing process, evaporation and flame propagation are generated more strongly in the bowl-piston type combustion chamber than in the flat-piston type. As the spray type changes, it is found that conical type produced large and strong vortices and fuel droplets are effictively diffused into the entire combustion chamber. As the injection rate pattern changes I, II, III based on BASIC type, we confirmed that End-of-Injection Effect strongly influence on droplets life time.

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