On the development of detailed and reduced reaction mechanisms for combustion modeling

C. K. Law, C. J. Sung, H. Wang

Research output: Contribution to conferencePaper

1 Scopus citations

Abstract

The present program was motivated by the recognition that existing detailed kinetic mechanisms for the modeling of hydrocarbon oxidation are far from being comprehensive to describe the diverse thermochemical conditions and combustion situations within practical combustors, that such a deficiency is further compromised through the use of reduced mechanisms at the level of 4-5 steps, and that, in spite of these shortcomings, they are increasingly integrated into the simulation of combustion processes and combustor performance. It is thus advocated that a concerted experimental and modeling effort be implemented to develop detailed, comprehensive mechanisms which are capable to describe the diverse combustion and flame phenomena, including homogeneous and diffusive ignition, steady burning, and extinction, premixed and nonpremixed flames, pressure and concentration effects, global responses including the laminar flame speed and extinction strain rate, the thermal and the major and minor species structures, and pollutant chemistry. The reactant and intermediate species to be studied in order to arrive at a comprehensive mechanism are proposed, and results on a mechanism applicable at the C2-C3 level are presented. The paper further advocates the development of (augmented) reduced mechanisms with 10 to 30 steps that are chemically comprehensive and computationally acceptable in anticipation of the substantially increased computational power in the next 5 to 10 years. A 12-step reduced mechanism for methane is developed and is shown to be comprehensive as defined.

Original languageEnglish (US)
DOIs
StatePublished - 2000
Event38th Aerospace Sciences Meeting and Exhibit 2000 - Reno, NV, United States
Duration: Jan 10 2000Jan 13 2000

Other

Other38th Aerospace Sciences Meeting and Exhibit 2000
CountryUnited States
CityReno, NV
Period1/10/001/13/00

All Science Journal Classification (ASJC) codes

  • Space and Planetary Science
  • Aerospace Engineering

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