한국자동차공학회논문집 (Transactions of the Korean Society of Automotive Engineers)

  • 제8권6호
  • /
  • Pages.22-30
  • /
  • 2000
  • /
  • 1225-6382(pISSN)
  • /
  • 2234-0149(eISSN)
한국자동차공학회 (The Korean Society of Automotive Engineers)
권호 표지

디젤분무에 대한 액체미립화모델들의 영향

The Influence of Liquid Atomization Models on Diesel Sprays

  • 이성혁 (회원, 중앙대학교 생산공학연구소) ;
  • 유홍선 (회원, 중앙대학교 기계공학부) ;
  • 홍기배 (회원, 충주대학교 열공학과)
  • 발행 : 2000.11.01
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초록

The present article deals with comparisons of published liquid breakup models for diesel sprays to analyze the influence of breakup models on various spray parameters. The three different models tested in this study are the surface wave instability (Wave) model, the Taylor analogy breakup (TAB) model, and the drop drag model(DDM). The numerical results using these models are compared with several experimental data to assess the prediction capabilities of breakup models. Additional task in this study is to investigate effects of the breakup time constant in the Wave model on the spray parameters because the spray behavior is sensitive to the breakup time constant. It is seen that there is uncertainly about the breakup time constant indicating that the suitable acceptance of the constant is important, and the TAB model generally shows significant under-prediction of Sauter Mean Diameter(SMD). In addition, it may be indicated that differences between the DDM and Wave model are not significant, showing that the DDM may be suitable for air-assisted atomization rather than pressure atomization.

키워드

참고문헌

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