Heat release rate markers for premixed combustion

Zacharias M. Nikolaou; Nedunchezhian Swaminathan

doi:10.1016/j.combustflame.2014.05.019

Heat release rate markers for premixed combustion

Zacharias M. Nikolaou, Nedunchezhian Swaminathan

Chemical And Process Engineering

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79 Citations (Scopus)

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Abstract

The validity of the commonly used flame marker for heat release rate (HRR) visualization, namely the rate of the reaction OH+CH₂O↔HCO+H₂O is re-examined. This is done both for methane-air and multi-component fuel-air mixtures for lean and stoichiometric conditions. Two different methods are used to identify HRR correlations, and it is found that HRR correlations vary strongly with stoichiometry. For the methane mixture there exist alternative HRR markers, while for the multi-component fuel flame the above correlation is found to be inadequate. Alternative markers for the HRR visualization are thus proposed and their performance under turbulent conditions is evaluated using DNS data.

Original language	English
Pages (from-to)	3073-3084
Number of pages	12
Journal	Combustion and Flame
Volume	161
Issue number	12
Early online date	16 Jun 2014
DOIs	https://doi.org/10.1016/j.combustflame.2014.05.019
Publication status	Published - 31 Dec 2014

Keywords

direct numerical simulation
flame markers
heat release rate imaging
laser diagnostics
mild combustion
premixed combustion

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10.1016/j.combustflame.2014.05.019Licence: CC BY 4.0

Nikolaou-Swaminathan-CF2015-heat-release-rate-markers-premixed-combustionFinal published version, 3.06 MBLicence: CC BY 4.0

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title = "Heat release rate markers for premixed combustion",

abstract = "The validity of the commonly used flame marker for heat release rate (HRR) visualization, namely the rate of the reaction OH+CH2O↔HCO+H2O is re-examined. This is done both for methane-air and multi-component fuel-air mixtures for lean and stoichiometric conditions. Two different methods are used to identify HRR correlations, and it is found that HRR correlations vary strongly with stoichiometry. For the methane mixture there exist alternative HRR markers, while for the multi-component fuel flame the above correlation is found to be inadequate. Alternative markers for the HRR visualization are thus proposed and their performance under turbulent conditions is evaluated using DNS data.",

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N2 - The validity of the commonly used flame marker for heat release rate (HRR) visualization, namely the rate of the reaction OH+CH2O↔HCO+H2O is re-examined. This is done both for methane-air and multi-component fuel-air mixtures for lean and stoichiometric conditions. Two different methods are used to identify HRR correlations, and it is found that HRR correlations vary strongly with stoichiometry. For the methane mixture there exist alternative HRR markers, while for the multi-component fuel flame the above correlation is found to be inadequate. Alternative markers for the HRR visualization are thus proposed and their performance under turbulent conditions is evaluated using DNS data.

AB - The validity of the commonly used flame marker for heat release rate (HRR) visualization, namely the rate of the reaction OH+CH2O↔HCO+H2O is re-examined. This is done both for methane-air and multi-component fuel-air mixtures for lean and stoichiometric conditions. Two different methods are used to identify HRR correlations, and it is found that HRR correlations vary strongly with stoichiometry. For the methane mixture there exist alternative HRR markers, while for the multi-component fuel flame the above correlation is found to be inadequate. Alternative markers for the HRR visualization are thus proposed and their performance under turbulent conditions is evaluated using DNS data.

KW - direct numerical simulation

KW - flame markers

KW - heat release rate imaging

KW - laser diagnostics

KW - mild combustion

KW - premixed combustion

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Heat release rate markers for premixed combustion

Abstract

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