Investigation of rich hydrogen-air deflagrations in models with detailed and reduced kinetic mechanisms

V. V. Gubernov; A. V. Kolobov; V. Bykov; U. Maas

doi:10.1016/j.combustflame.2016.03.017

Investigation of rich hydrogen-air deflagrations in models with detailed and reduced kinetic mechanisms

V. V. Gubernov, A. V. Kolobov, V. Bykov, U. Maas

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

4 Scopus citations

Abstract

The structure, flame speed and stability of freely propagating combustion waves in rich hydrogen-air mixtures is investigated numerically using models with detailed and reduced two-step kinetic mechanisms. The critical conditions for the onset of diffusive-thermal pulsating instabilities are found in the equivalence ratio vs pressure parameter plane in each case. The oscillating solutions emerging as a result of these instabilities are investigated. It is demonstrated that the models with reduced kinetics are able to qualitatively (models with constant density) and quantitatively (models with variable density) predict the flame characteristics and stability as compared to the models with detailed reaction mechanism.

Original language	English
Pages (from-to)	32-38
Number of pages	7
Journal	Combustion and Flame
Volume	168
DOIs	https://doi.org/10.1016/j.combustflame.2016.03.017
State	Published - 1 Jun 2016
Externally published	Yes

Keywords

Flammability limit
Hydrogen-air combustion
Premixed flames
Thermal-diffusive instabilities

ASJC Scopus subject areas

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

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10.1016/j.combustflame.2016.03.017

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title = "Investigation of rich hydrogen-air deflagrations in models with detailed and reduced kinetic mechanisms",

abstract = "The structure, flame speed and stability of freely propagating combustion waves in rich hydrogen-air mixtures is investigated numerically using models with detailed and reduced two-step kinetic mechanisms. The critical conditions for the onset of diffusive-thermal pulsating instabilities are found in the equivalence ratio vs pressure parameter plane in each case. The oscillating solutions emerging as a result of these instabilities are investigated. It is demonstrated that the models with reduced kinetics are able to qualitatively (models with constant density) and quantitatively (models with variable density) predict the flame characteristics and stability as compared to the models with detailed reaction mechanism.",

keywords = "Flammability limit, Hydrogen-air combustion, Premixed flames, Thermal-diffusive instabilities",

author = "Gubernov, \{V. V.\} and Kolobov, \{A. V.\} and V. Bykov and U. Maas",

note = "Publisher Copyright: {\textcopyright} 2016 The Combustion Institute.",

year = "2016",

month = jun,

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doi = "10.1016/j.combustflame.2016.03.017",

language = "English",

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pages = "32--38",

journal = "Combustion and Flame",

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T1 - Investigation of rich hydrogen-air deflagrations in models with detailed and reduced kinetic mechanisms

AU - Gubernov, V. V.

AU - Kolobov, A. V.

AU - Bykov, V.

AU - Maas, U.

PY - 2016/6/1

Y1 - 2016/6/1

N2 - The structure, flame speed and stability of freely propagating combustion waves in rich hydrogen-air mixtures is investigated numerically using models with detailed and reduced two-step kinetic mechanisms. The critical conditions for the onset of diffusive-thermal pulsating instabilities are found in the equivalence ratio vs pressure parameter plane in each case. The oscillating solutions emerging as a result of these instabilities are investigated. It is demonstrated that the models with reduced kinetics are able to qualitatively (models with constant density) and quantitatively (models with variable density) predict the flame characteristics and stability as compared to the models with detailed reaction mechanism.

AB - The structure, flame speed and stability of freely propagating combustion waves in rich hydrogen-air mixtures is investigated numerically using models with detailed and reduced two-step kinetic mechanisms. The critical conditions for the onset of diffusive-thermal pulsating instabilities are found in the equivalence ratio vs pressure parameter plane in each case. The oscillating solutions emerging as a result of these instabilities are investigated. It is demonstrated that the models with reduced kinetics are able to qualitatively (models with constant density) and quantitatively (models with variable density) predict the flame characteristics and stability as compared to the models with detailed reaction mechanism.

KW - Flammability limit

KW - Hydrogen-air combustion

KW - Premixed flames

KW - Thermal-diffusive instabilities

UR - https://www.scopus.com/pages/publications/84966430651

U2 - 10.1016/j.combustflame.2016.03.017

DO - 10.1016/j.combustflame.2016.03.017

M3 - Article

AN - SCOPUS:84966430651

SN - 0010-2180

VL - 168

SP - 32

EP - 38

JO - Combustion and Flame

JF - Combustion and Flame

ER -

Investigation of rich hydrogen-air deflagrations in models with detailed and reduced kinetic mechanisms

Abstract

Keywords

ASJC Scopus subject areas

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