Application of repro-modeling for the reduction of combustion mechanisms

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23 Citations (Scopus)

Abstract

The basic problem of mechanism reduction methods is to find functional relationships between selectedstate variables (e.g., some concentrations and temperature) and their rates. However, this information is present during the simulations with the full chemical model. As a new application of the repro-modeling approach, information for rates is extracted from detailedchemical calculations and stored in the form of high-order multivariate, polynomials. For an efficient utilization of the polynomials, a computer program was written that rearranges them to the form of multivariate Horner equations. The repro-modeling method is an alternative to the application of the quasi-steady-state approximation (QSSA) and of the low-dimensional manifold method. Pros and cons of these three methods are discussed in detail considering the preparations required, the accuracy attainable, the yield in computer time, and the limitations of the techniques. Simulations of the combustion of wet CO using two-variable and three-variable repro-models were24,000 and 11,700 times faster, respectively, than the SENKIN calculation using the full model. These calculations represent the first use of repro-modeling for combustion mechanism reduction.

Original languageEnglish
Pages (from-to)949-955
Number of pages7
JournalSymposium (International) on Combustion
Volume25
Issue number1
DOIs
Publication statusPublished - 1994

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polynomials
Polynomials
quasi-steady states
Carbon Monoxide
Computer program listings
simulation
computer programs
preparation
approximation
Temperature
temperature

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry
  • Energy Engineering and Power Technology
  • Fuel Technology
  • Mechanical Engineering

Cite this

Application of repro-modeling for the reduction of combustion mechanisms. / Turányi, T.

In: Symposium (International) on Combustion, Vol. 25, No. 1, 1994, p. 949-955.

Research output: Contribution to journalArticle

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