Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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Development of Reduced Normal Dodecane Chemical Kinetics

축소 노멀 도데케인 화학반응 메커니즘 개발

  • Lee, Sangyul (Interdisciplinary Program in Automotive Engineering, Seoul National University) ;
  • Kim, Gyujin (School of Mechanical and Aerospace, Seoul National University) ;
  • Min, Kyoungdoug (School of Mechanical and Aerospace, Seoul National University)
  • 이상열 (서울대학교 협동과정 자동차공학과) ;
  • 김규진 (서울대학교 기계항공공학부) ;
  • 민경덕 (서울대학교 기계항공공학부)
  • Received : 2012.02.14
  • Accepted : 2012.07.16
  • Published : 2013.03.01
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Abstract

Generally, a reduced chemical mechanism of n-heptane is used as chemical fuel of a 3-D diesel engine simulation because diesel fuel consists of hundreds of chemical components and various chemical classes so that it is very complex and large to use for the calculation. However, the importance of fuel in a 3-D simulation increases because detailed fuel characteristics are the key factor in the recent engine research such as homogeneous charged compression ignition engine. In this study, normal paraffin, iso paraffin and aromatics were selected to represent diesel characteristics and n-dodecane was used as a representative normal paraffin to describe the heavy molecular weight of diesel oil (C10~C20). Reduced kinetics of iso-octane and toluene which are representative species of iso paraffin and aromatics respectively were developed in the previous study. Some species were selected based on the sensitivity analysis and a mechanism was developed based on the general oxidation scheme. The ignition delay times, maximum pressure and temperature of the new reduced n-dodecane chemical mechanisms were well matched to the detailed mechanism data.

Keywords

References

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