Modeling of diesel combustion and NO emissions based on a modified eddy dissipation concept

Sangjin Hong*, Dennis N. Assanis, Margaret S. Wooldridge, Hong Im, Eric Kurtz, Heinz Pitsch

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

This paper reports the development of a model of diesel combustion and NO emissions, based on a modified eddy dissipation concept (EDC), and its implementation into the KIVA-3V multidimensional simulation. The EDC model allows for more realistic representation of the thin sub-grid scale reaction zone as well as the small-scale molecular mixing processes. Realistic chemical kinetic mechanisms for n-heptane combustion and NOx formation processes are fully incorporated. A model based on the normalized fuel mass fraction is implemented to transition between ignition and combustion. The modeling approach has been validated by comparison with experimental data for a range of operating conditions. Predicted cylinder pressure and heat release rates agree well with measurements. The predictions for NO concentration show a consistent trend with experiments. Overall, the results demonstrate the improved capability of the model for predictions of the combustion process.

Original languageEnglish (US)
Title of host publication2004 SAE World Congress
DOIs
StatePublished - Dec 1 2004
Event2004 SAE World Congress - Detroit, MI, United States
Duration: Mar 8 2004Mar 11 2004

Other

Other2004 SAE World Congress
CountryUnited States
CityDetroit, MI
Period03/8/0403/11/04

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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