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The temperature dependence of the laminar burning velocities of methyl formate plus air flames

Christensen, Moah LU ; Heimdal Nilsson, Elna LU and Konnov, Alexander LU (2015) In Fuel 157. p.162-170
Abstract
Laminar burning velocities, S-L, of methyl formate and air flames were determined at atmospheric pressure and initial gas temperatures, T, of 298, 318, 338 and 348 K. Measurements were performed in non-stretched flames, stabilized on a perforated plate burner at adiabatic conditions, generated using the heat flux method. These new experimental data shed light on discrepancies seen in previously published results, and the temperature dependence of the laminar burning velocity of methyl formate was analysed using expression S-L = S-L0(T/T-0)(alpha). It was found that the power exponent, alpha, has a minimum close to equivalence ratio, phi, of 1.0. Both the laminar burning velocities and alpha coefficient were compared with predictions of the... (More)
Laminar burning velocities, S-L, of methyl formate and air flames were determined at atmospheric pressure and initial gas temperatures, T, of 298, 318, 338 and 348 K. Measurements were performed in non-stretched flames, stabilized on a perforated plate burner at adiabatic conditions, generated using the heat flux method. These new experimental data shed light on discrepancies seen in previously published results, and the temperature dependence of the laminar burning velocity of methyl formate was analysed using expression S-L = S-L0(T/T-0)(alpha). It was found that the power exponent, alpha, has a minimum close to equivalence ratio, phi, of 1.0. Both the laminar burning velocities and alpha coefficient were compared with predictions of the mechanisms of Glaude et al. (2005), Dooley et al. (2010) and Dievart et al. (2013). While the two latter mechanisms are in generally good agreement in lean mixtures, the Glaude mechanism over predicts the experimental burning velocities over the entire range of equivalence ratios. The temperature dependences predicted by the Glaude and Dievart mechanisms, however, are rather close and agree well with the measurements. To elucidate these differences and similarities in the performance of two mechanisms, the sensitivity analysis of the power exponent alpha was performed for the first time. It was demonstrated that examination of the temperature dependence of the burning velocity provides an independent approach for analysis of experimental data consistency. (c) 2015 Elsevier Ltd. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
analysis, Sensitivity, Temperature dependence, Burning velocity, Methyl formate
in
Fuel
volume
157
pages
162 - 170
publisher
Elsevier
external identifiers
  • wos:000355134700020
  • scopus:84929298867
ISSN
1873-7153
DOI
10.1016/j.fuel.2015.04.072
language
English
LU publication?
yes
id
90937422-15dd-4c6a-9b30-66eabc6e203f (old id 7410501)
date added to LUP
2015-06-29 13:08:11
date last changed
2017-02-19 03:45:35
@article{90937422-15dd-4c6a-9b30-66eabc6e203f,
  abstract     = {Laminar burning velocities, S-L, of methyl formate and air flames were determined at atmospheric pressure and initial gas temperatures, T, of 298, 318, 338 and 348 K. Measurements were performed in non-stretched flames, stabilized on a perforated plate burner at adiabatic conditions, generated using the heat flux method. These new experimental data shed light on discrepancies seen in previously published results, and the temperature dependence of the laminar burning velocity of methyl formate was analysed using expression S-L = S-L0(T/T-0)(alpha). It was found that the power exponent, alpha, has a minimum close to equivalence ratio, phi, of 1.0. Both the laminar burning velocities and alpha coefficient were compared with predictions of the mechanisms of Glaude et al. (2005), Dooley et al. (2010) and Dievart et al. (2013). While the two latter mechanisms are in generally good agreement in lean mixtures, the Glaude mechanism over predicts the experimental burning velocities over the entire range of equivalence ratios. The temperature dependences predicted by the Glaude and Dievart mechanisms, however, are rather close and agree well with the measurements. To elucidate these differences and similarities in the performance of two mechanisms, the sensitivity analysis of the power exponent alpha was performed for the first time. It was demonstrated that examination of the temperature dependence of the burning velocity provides an independent approach for analysis of experimental data consistency. (c) 2015 Elsevier Ltd. All rights reserved.},
  author       = {Christensen, Moah and Heimdal Nilsson, Elna and Konnov, Alexander},
  issn         = {1873-7153},
  keyword      = {analysis,Sensitivity,Temperature dependence,Burning velocity,Methyl formate},
  language     = {eng},
  pages        = {162--170},
  publisher    = {Elsevier},
  series       = {Fuel},
  title        = {The temperature dependence of the laminar burning velocities of methyl formate plus air flames},
  url          = {http://dx.doi.org/10.1016/j.fuel.2015.04.072},
  volume       = {157},
  year         = {2015},
}