Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
권호 표지

Skeletal Chemical Mechanisms for a Diesel Fuel Surrogate by the Directed Relation Graph(DRG)

직접 관계 그래프(DRG)를 이용한 디젤 연료의 상세 화학 반응 기구 축소화

  • 이영재 (포항공과대학교 기계공학과) ;
  • 허강열 (포항공과대학교 기계공학과)
  • Received : 2011.03.09
  • Accepted : 2011.06.04
  • Published : 2011.06.30
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Abstract

It is a challenging task to apply large detailed chemical mechanisms of fuel oxidation in simulation of complex combustion phenomena. There exist a few systematic methodologies to reduce detailed chemical mechanisms to smaller sizes involving less computational load. This research work concerns generation of a skeletal chemical mechanism by a directed relation graph with specified accuracy requirement. Two sequential stages for mechanism reduction are followed in a perfectly stirred reactor(PSR) for high temperature chemistry and to consider the autoignition delay time for low and high temperature chemistry. Reduction was performed for the detailed chemical mechanism of n-heptane consisting of 561 species and 2539 elementary reaction steps. Validation results show acceptable agreement for the autoignition delay time and the PSR calculation in wide parametric ranges of pressure, temperature and equivalence ratio.

Keywords

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