Dynamics of flame propagation from localized ignition in rich hydrogen/air mixtures: Effects of elevated pressure and temperature

Stephen D. Tse; Hong Zhao

doi:10.1080/00102200590909210

Dynamics of flame propagation from localized ignition in rich hydrogen/air mixtures: Effects of elevated pressure and temperature

Stephen D. Tse, Hong Zhao

School of Engineering, Mechanical & Aerospace Engineering

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

6 Scopus citations

Abstract

A computational study on expanding spherical premixed flames was conducted to investigate the dynamics of the stretch-affected, one-dimensional, and pulsating instability. Using a time-dependent, spherically symmetric code with detailed chemistry, transport, and radiation submodels, rich H₂/air mixtures were investigated. It was shown that the dynamics of spherically expanding flames was significantly different than that for planar flames. It was suggested that any consideration of flame propagation ignition must address the competition between excess enthalpy from external energy deposition and stretch/heat-loss-affected pulsation instability.

Original language	English (US)
Pages (from-to)	559-578
Number of pages	20
Journal	Combustion Science and Technology
Volume	177
Issue number	3
DOIs	https://doi.org/10.1080/00102200590909210
State	Published - Mar 2005

All Science Journal Classification (ASJC) codes

General Chemistry
General Chemical Engineering
Fuel Technology
Energy Engineering and Power Technology
General Physics and Astronomy

Keywords

Flame propagation
Flammability limits
Ignition
Instability
Spherical flames

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10.1080/00102200590909210

Cite this

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title = "Dynamics of flame propagation from localized ignition in rich hydrogen/air mixtures: Effects of elevated pressure and temperature",

abstract = "A computational study on expanding spherical premixed flames was conducted to investigate the dynamics of the stretch-affected, one-dimensional, and pulsating instability. Using a time-dependent, spherically symmetric code with detailed chemistry, transport, and radiation submodels, rich H2/air mixtures were investigated. It was shown that the dynamics of spherically expanding flames was significantly different than that for planar flames. It was suggested that any consideration of flame propagation ignition must address the competition between excess enthalpy from external energy deposition and stretch/heat-loss-affected pulsation instability.",

keywords = "Flame propagation, Flammability limits, Ignition, Instability, Spherical flames",

author = "Tse, {Stephen D.} and Hong Zhao",

note = "Funding Information: Received 14 April 2004; accepted 14 September 2004. This work was partially supported by the Zonta International Amelia Earhart Fellowship and the National Science Foundation. Special thanks are due to Mr. Sravan Ravinutala for his help with the numerical code. *Address correspondence to [email protected]",

year = "2005",

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doi = "10.1080/00102200590909210",

language = "English (US)",

volume = "177",

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journal = "Combustion Science and Technology",

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T1 - Dynamics of flame propagation from localized ignition in rich hydrogen/air mixtures

T2 - Effects of elevated pressure and temperature

AU - Tse, Stephen D.

AU - Zhao, Hong

N1 - Funding Information: Received 14 April 2004; accepted 14 September 2004. This work was partially supported by the Zonta International Amelia Earhart Fellowship and the National Science Foundation. Special thanks are due to Mr. Sravan Ravinutala for his help with the numerical code. *Address correspondence to [email protected]

PY - 2005/3

Y1 - 2005/3

N2 - A computational study on expanding spherical premixed flames was conducted to investigate the dynamics of the stretch-affected, one-dimensional, and pulsating instability. Using a time-dependent, spherically symmetric code with detailed chemistry, transport, and radiation submodels, rich H2/air mixtures were investigated. It was shown that the dynamics of spherically expanding flames was significantly different than that for planar flames. It was suggested that any consideration of flame propagation ignition must address the competition between excess enthalpy from external energy deposition and stretch/heat-loss-affected pulsation instability.

AB - A computational study on expanding spherical premixed flames was conducted to investigate the dynamics of the stretch-affected, one-dimensional, and pulsating instability. Using a time-dependent, spherically symmetric code with detailed chemistry, transport, and radiation submodels, rich H2/air mixtures were investigated. It was shown that the dynamics of spherically expanding flames was significantly different than that for planar flames. It was suggested that any consideration of flame propagation ignition must address the competition between excess enthalpy from external energy deposition and stretch/heat-loss-affected pulsation instability.

KW - Flame propagation

KW - Flammability limits

KW - Ignition

KW - Instability

KW - Spherical flames

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JO - Combustion Science and Technology

JF - Combustion Science and Technology

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ER -

Dynamics of flame propagation from localized ignition in rich hydrogen/air mixtures: Effects of elevated pressure and temperature

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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