Cellular instabilities of expanding hydrogen/propane spherical flames at elevated pressures: Theory and experiment

Chung King Law; G. Jomaas; J. K. Bechtold

doi:10.1016/j.proci.2004.08.266

Cellular instabilities of expanding hydrogen/propane spherical flames at elevated pressures: Theory and experiment

Chung King Law, G. Jomaas, J. K. Bechtold

Research output: Contribution to journal › Conference article › peer-review

332 Scopus citations

Abstract

An experimental and theoretical investigation of the onset of cellular instabilities on spherically expanding flames in mixtures of hydrogen and propane in air at elevated pressures was conducted. Critical conditions for the onset of instability were measured and mapped out over a range of pressures and mixture compositions. An asymptotic theory of hydrodynamic and diffusional-thermal cell development on flames in mixtures comprised of two scarce fuels burning in air was also formulated. Predicted values of Peclet number, defined as the flame radius at the onset of instability normalized by the flame thickness, were shown to compare favorably with the experimentally measured values.

Original language	English (US)
Pages (from-to)	159-167
Number of pages	9
Journal	Proceedings of the Combustion Institute
Volume	30
Issue number	1
DOIs	https://doi.org/10.1016/j.proci.2004.08.266
State	Published - 2005
Event	30th International Symposium on Combustion - Chicago, IL, United States Duration: Jul 25 2004 → Jul 30 2004

All Science Journal Classification (ASJC) codes

General Chemical Engineering
Mechanical Engineering
Physical and Theoretical Chemistry

Keywords

Cellular flames
Flame instability
Hydrogen combustion

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10.1016/j.proci.2004.08.266

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title = "Cellular instabilities of expanding hydrogen/propane spherical flames at elevated pressures: Theory and experiment",

abstract = "An experimental and theoretical investigation of the onset of cellular instabilities on spherically expanding flames in mixtures of hydrogen and propane in air at elevated pressures was conducted. Critical conditions for the onset of instability were measured and mapped out over a range of pressures and mixture compositions. An asymptotic theory of hydrodynamic and diffusional-thermal cell development on flames in mixtures comprised of two scarce fuels burning in air was also formulated. Predicted values of Peclet number, defined as the flame radius at the onset of instability normalized by the flame thickness, were shown to compare favorably with the experimentally measured values.",

keywords = "Cellular flames, Flame instability, Hydrogen combustion",

author = "Law, {Chung King} and G. Jomaas and Bechtold, {J. K.}",

note = "Publisher Copyright: {\textcopyright} 2004 The Combustion Institute. Published by Elsevier Inc. All rights reserved.; 30th International Symposium on Combustion ; Conference date: 25-07-2004 Through 30-07-2004",

year = "2005",

doi = "10.1016/j.proci.2004.08.266",

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T1 - Cellular instabilities of expanding hydrogen/propane spherical flames at elevated pressures

T2 - 30th International Symposium on Combustion

AU - Law, Chung King

AU - Jomaas, G.

AU - Bechtold, J. K.

PY - 2005

Y1 - 2005

N2 - An experimental and theoretical investigation of the onset of cellular instabilities on spherically expanding flames in mixtures of hydrogen and propane in air at elevated pressures was conducted. Critical conditions for the onset of instability were measured and mapped out over a range of pressures and mixture compositions. An asymptotic theory of hydrodynamic and diffusional-thermal cell development on flames in mixtures comprised of two scarce fuels burning in air was also formulated. Predicted values of Peclet number, defined as the flame radius at the onset of instability normalized by the flame thickness, were shown to compare favorably with the experimentally measured values.

AB - An experimental and theoretical investigation of the onset of cellular instabilities on spherically expanding flames in mixtures of hydrogen and propane in air at elevated pressures was conducted. Critical conditions for the onset of instability were measured and mapped out over a range of pressures and mixture compositions. An asymptotic theory of hydrodynamic and diffusional-thermal cell development on flames in mixtures comprised of two scarce fuels burning in air was also formulated. Predicted values of Peclet number, defined as the flame radius at the onset of instability normalized by the flame thickness, were shown to compare favorably with the experimentally measured values.

KW - Cellular flames

KW - Flame instability

KW - Hydrogen combustion

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AN - SCOPUS:84964283809

SN - 1540-7489

VL - 30

SP - 159

EP - 167

JO - Proceedings of the Combustion Institute

JF - Proceedings of the Combustion Institute

IS - 1

Y2 - 25 July 2004 through 30 July 2004

ER -

Cellular instabilities of expanding hydrogen/propane spherical flames at elevated pressures: Theory and experiment

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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