Journal of ILASS-Korea (한국분무공학회지)

Institute for Liquid Atomization and Spray Systems-Korea (한국분무공학회)
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Effects of Spray Breakup Model Variables on Spray and Combustion Characteristics

분열모델 상수가 분무 및 연소특성에 미치는 영향

  • 이승필 (한양대학교 융합기계공학과) ;
  • 박준규 (한양대학교 융합기계공학과) ;
  • 박성욱 (한양대학교 기계공학부)
  • Received : 2017.02.08
  • Accepted : 2017.02.14
  • Published : 2017.03.31
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Abstract

This paper describes the effects of spray breakup model constants on spray and combustion characteristics in single cylinder compression engine. KIVA-3V code coupled with a CHEMKIN chemistry solver was used for numerical analysis. In this study, spray simulations and combustion simulations are studied simultaneously. Spray simulation was conducted in constant volume to reduce the effects of air-flow as swirl or tumble. The model validation was conducted and there are little difference between experiments and simulation, this differences were reasonable. In spray simulation, the effects of model constants on spray tip penetration, spray patter and SMD were studied. Furthermore, the analysis of effects of breakup variables on combustion and emissions characteristics was conducted. The results show the KH-RT breakup model constants affects spray and combustion characteristics strongly. Increasing KH model variable (B1) and RT model constants ($C_{\tau}$, $C_{RT}$) induced slower breakup time.

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References

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