Extinction of interacting premixed flames: Theory and experimental comparisons

S. H. Chung; J. S. Kim; C. K. Law

doi:10.1016/S0082-0784(88)80419-3

Extinction of interacting premixed flames: Theory and experimental comparisons

S. H. Chung^*, J. S. Kim, C. K. Law

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

The structure and extinction states of two interacting stretched premixed flames of unequal mixture concentrations and distinct fuel, oxidizer and thermal diffusivities are analyzed. Results show that the extinction behavior depends critically on the effective Lewis numbers of the mixtures in that flames with large Lewis numbers interact weakly such that extinction mainly depends on the concentration of the stronger flame, while flames with small Lewis numbers interact strongly such that extinction depends on the concentrations of both flames. Theoretical predictions identify the various extinction modes and satisfactorily explain the experimental results on the extinction boundaries of lean and rich methane/air and butane/air flames.

Original language	English (US)
Pages (from-to)	1845-1851
Number of pages	7
Journal	Symposium (International) on Combustion
Volume	21
Issue number	1
DOIs	https://doi.org/10.1016/S0082-0784(88)80419-3
State	Published - 1988
Externally published	Yes

Bibliographical note

Funding Information:
SHC and JSK were supported by the Korean Science and Engineering Foundation, while CKL was supported by the U.S. Department of Energy' under Contract No. DE-FG03-84ERI3274 and U.S. Air Force Office of Scientific Research under (;rant No. 85-0147.

ASJC Scopus subject areas

General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
Mechanical Engineering
Physical and Theoretical Chemistry
Fluid Flow and Transfer Processes

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10.1016/S0082-0784(88)80419-3

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title = "Extinction of interacting premixed flames: Theory and experimental comparisons",

abstract = "The structure and extinction states of two interacting stretched premixed flames of unequal mixture concentrations and distinct fuel, oxidizer and thermal diffusivities are analyzed. Results show that the extinction behavior depends critically on the effective Lewis numbers of the mixtures in that flames with large Lewis numbers interact weakly such that extinction mainly depends on the concentration of the stronger flame, while flames with small Lewis numbers interact strongly such that extinction depends on the concentrations of both flames. Theoretical predictions identify the various extinction modes and satisfactorily explain the experimental results on the extinction boundaries of lean and rich methane/air and butane/air flames.",

author = "Chung, {S. H.} and Kim, {J. S.} and Law, {C. K.}",

note = "Funding Information: SHC and JSK were supported by the Korean Science and Engineering Foundation, while CKL was supported by the U.S. Department of Energy' under Contract No. DE-FG03-84ERI3274 and U.S. Air Force Office of Scientific Research under (;rant No. 85-0147.",

year = "1988",

doi = "10.1016/S0082-0784(88)80419-3",

language = "English (US)",

volume = "21",

pages = "1845--1851",

journal = "Symposium (International) on Combustion",

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publisher = "Combustion Institute",

number = "1",

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TY - JOUR

T1 - Extinction of interacting premixed flames

T2 - Theory and experimental comparisons

AU - Chung, S. H.

AU - Kim, J. S.

AU - Law, C. K.

N1 - Funding Information: SHC and JSK were supported by the Korean Science and Engineering Foundation, while CKL was supported by the U.S. Department of Energy' under Contract No. DE-FG03-84ERI3274 and U.S. Air Force Office of Scientific Research under (;rant No. 85-0147.

PY - 1988

Y1 - 1988

N2 - The structure and extinction states of two interacting stretched premixed flames of unequal mixture concentrations and distinct fuel, oxidizer and thermal diffusivities are analyzed. Results show that the extinction behavior depends critically on the effective Lewis numbers of the mixtures in that flames with large Lewis numbers interact weakly such that extinction mainly depends on the concentration of the stronger flame, while flames with small Lewis numbers interact strongly such that extinction depends on the concentrations of both flames. Theoretical predictions identify the various extinction modes and satisfactorily explain the experimental results on the extinction boundaries of lean and rich methane/air and butane/air flames.

AB - The structure and extinction states of two interacting stretched premixed flames of unequal mixture concentrations and distinct fuel, oxidizer and thermal diffusivities are analyzed. Results show that the extinction behavior depends critically on the effective Lewis numbers of the mixtures in that flames with large Lewis numbers interact weakly such that extinction mainly depends on the concentration of the stronger flame, while flames with small Lewis numbers interact strongly such that extinction depends on the concentrations of both flames. Theoretical predictions identify the various extinction modes and satisfactorily explain the experimental results on the extinction boundaries of lean and rich methane/air and butane/air flames.

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DO - 10.1016/S0082-0784(88)80419-3

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JO - Symposium (International) on Combustion

JF - Symposium (International) on Combustion

IS - 1

ER -

Extinction of interacting premixed flames: Theory and experimental comparisons

Abstract

Bibliographical note

ASJC Scopus subject areas

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