Local and global uncertainty analyses of a methane flame model

T. Turányi, Judit Zádor, I. Zsély

Research output: Contribution to journalArticle

Abstract

Local and global uncertainty analyses of a flat, premixed, stationary, laminar methane flame model were carried out using the Leeds methane oxidation mechanism. Uncertainties of laminar flame velocity, maximal flame temperature, and maximal concentrations of radicals H, O, OH, CH, and CH2 were investigated. The global uncertainty analysis methods included the Morris method and the Monte Carlo analysis with Latin hypercube sampling. An assumed probability density function (pdf) was assigned to the rate coefficients of all the 175 reactions and to the enthalpies of formation of the 37 species. The analyses provided the following answers: approximate pdf-s and standard deviations of the model results, minimal and maximal values of the results at any physically realistic parameter combination, and the contribution of the uncertainty of each parameter to the uncertainties of the model results. Thus, the uncertainties of few rate parameters and few enthalpies of formation data cause most of the uncertainly of model results. This is an abstract of a paper presented at the 228th ACS National Meeting (Philadelphia, PA, 8/22-26/2004).

Original languageEnglish
JournalUnknown Journal
Volume228
Issue number2
Publication statusPublished - 2004

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Methane
Probability density function
Enthalpy
Uncertainty analysis
Uncertainty
Sampling
Oxidation
Temperature

ASJC Scopus subject areas

  • Chemistry(all)

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Local and global uncertainty analyses of a methane flame model. / Turányi, T.; Zádor, Judit; Zsély, I.

In: Unknown Journal, Vol. 228, No. 2, 2004.

Research output: Contribution to journalArticle

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