A two-conserved scalar model for HCCI engine applications

Vasileios Hamosfakidis, Arkadiusz Kobiera, Hong Im, Dennis Assanis

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

Abstract

A two-conserved scalar model is proposed to model homogeneous charge compression ignition (HCCI) combustion. The model describes the reactive scalar variables in terms of the mixture fraction, Z , and the initial EGR fraction, J , where the two variables represent inhomogeneities in the fuel-air mixture and in the fresh mixture-EGR charge, respectively. The main benefits of this approach are the reduction of dimensionality in solving for the reactive scalars, and the reduced number of equations in the fluid mechanics calculation. The conserved scalar space is rediscretized at each time step by a proper zone creation strategy based on the mass distribution and reactivity in each computational cell, for which the reactive scalar variables are reinitialized in order to account for the nonlinear effect of EGR on reaction rates. The model has also been implemented into the KIVA-3v code to simulate HCCI combustion. The results show excellent agreement with experimental data, demonstrating the high fidelity and computational efficiency of the present approach.

Original languageEnglish (US)
Title of host publication5th US Combustion Meeting 2007
PublisherCombustion Institute
Pages2164-2174
Number of pages11
ISBN (Electronic)9781604238112
StatePublished - Jan 1 2007
Event5th US Combustion Meeting 2007 - San Diego, United States
Duration: Mar 25 2007Mar 28 2007

Publication series

Name5th US Combustion Meeting 2007
Volume4

Other

Other5th US Combustion Meeting 2007
CountryUnited States
CitySan Diego
Period03/25/0703/28/07

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

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