Flame acceleration in long narrow open channels

Vadim N. Kurdyumov, Moshe Matalon

Research output: Contribution to journalArticle

Abstract

We study the propagation of premixed flames in long but finite channels, when the mixture is ignited at one end and both ends remain open and exposed to atmospheric pressure. Thermal expansion produces a continuous flow of burned gas directed away from the flame and towards the end of the channel where ignition took place. Owing to viscous drag, the flow is retarded at the walls and accelerated in the center, producing a pressure gradient that pushes the unburned gas ahead of the flame towards the other end of the channel. As a result the flame accelerates when it travels from end to end of the channel. The total travel time depends on the length of the channel and is proportional to γ-1ln(1 + γ), where c is the heat release parameter.

Original languageEnglish (US)
Pages (from-to)865-872
Number of pages8
JournalProceedings of the Combustion Institute
Volume34
Issue number1
DOIs
StatePublished - 2013

Fingerprint

Travel time
Pressure gradient
Atmospheric pressure
Thermal expansion
Flow of gases
Drag
Ignition
flames
Gases
travel
viscous drag
premixed flames
pressure gradients
gases
ignition
thermal expansion
atmospheric pressure
Hot Temperature
heat
propagation

Keywords

  • Flame acceleration
  • Flame propagation in tubes
  • Premixed flames

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Physical and Theoretical Chemistry

Cite this

Flame acceleration in long narrow open channels. / Kurdyumov, Vadim N.; Matalon, Moshe.

In: Proceedings of the Combustion Institute, Vol. 34, No. 1, 2013, p. 865-872.

Research output: Contribution to journalArticle

@article{7c788b5473e64996bc8bb6c9a1b83c45,
title = "Flame acceleration in long narrow open channels",
abstract = "We study the propagation of premixed flames in long but finite channels, when the mixture is ignited at one end and both ends remain open and exposed to atmospheric pressure. Thermal expansion produces a continuous flow of burned gas directed away from the flame and towards the end of the channel where ignition took place. Owing to viscous drag, the flow is retarded at the walls and accelerated in the center, producing a pressure gradient that pushes the unburned gas ahead of the flame towards the other end of the channel. As a result the flame accelerates when it travels from end to end of the channel. The total travel time depends on the length of the channel and is proportional to γ-1ln(1 + γ), where c is the heat release parameter.",
keywords = "Flame acceleration, Flame propagation in tubes, Premixed flames",
author = "Kurdyumov, {Vadim N.} and Moshe Matalon",
year = "2013",
doi = "10.1016/j.proci.2012.07.045",
language = "English (US)",
volume = "34",
pages = "865--872",
journal = "Proceedings of the Combustion Institute",
issn = "1540-7489",
publisher = "Elsevier Limited",
number = "1",

}

TY - JOUR

T1 - Flame acceleration in long narrow open channels

AU - Kurdyumov, Vadim N.

AU - Matalon, Moshe

PY - 2013

Y1 - 2013

N2 - We study the propagation of premixed flames in long but finite channels, when the mixture is ignited at one end and both ends remain open and exposed to atmospheric pressure. Thermal expansion produces a continuous flow of burned gas directed away from the flame and towards the end of the channel where ignition took place. Owing to viscous drag, the flow is retarded at the walls and accelerated in the center, producing a pressure gradient that pushes the unburned gas ahead of the flame towards the other end of the channel. As a result the flame accelerates when it travels from end to end of the channel. The total travel time depends on the length of the channel and is proportional to γ-1ln(1 + γ), where c is the heat release parameter.

AB - We study the propagation of premixed flames in long but finite channels, when the mixture is ignited at one end and both ends remain open and exposed to atmospheric pressure. Thermal expansion produces a continuous flow of burned gas directed away from the flame and towards the end of the channel where ignition took place. Owing to viscous drag, the flow is retarded at the walls and accelerated in the center, producing a pressure gradient that pushes the unburned gas ahead of the flame towards the other end of the channel. As a result the flame accelerates when it travels from end to end of the channel. The total travel time depends on the length of the channel and is proportional to γ-1ln(1 + γ), where c is the heat release parameter.

KW - Flame acceleration

KW - Flame propagation in tubes

KW - Premixed flames

UR - http://www.scopus.com/inward/record.url?scp=84873347076&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84873347076&partnerID=8YFLogxK

U2 - 10.1016/j.proci.2012.07.045

DO - 10.1016/j.proci.2012.07.045

M3 - Article

AN - SCOPUS:84873347076

VL - 34

SP - 865

EP - 872

JO - Proceedings of the Combustion Institute

JF - Proceedings of the Combustion Institute

SN - 1540-7489

IS - 1

ER -