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Laminar burning velocity of nitromethane plus air flames: A comparison of flat and spherical flames

Nauclér, Jenny LU ; Heimdal Nilsson, Elna LU and Konnov, Alexander LU (2015) In Combustion and Flame 162(10). p.3803-3809
Abstract
Laminar burning velocities, S-L, of nitromethane and air flames at 1 atm and initial gas temperatures, T, of 338 K, 348 K, and 358 K were determined using the heat flux method. Measurements were performed in non-stretched flames, stabilized on a perforated plate burner under adiabatic conditions. The comparison of these new experimental data and recent literature results obtained in spherical flames at 423 K was guided by the analysis of the temperature dependence of S-L using expression S-L = S-L0(T/T-0)(alpha), and also by kinetic modelling of premixed flames employing detailed mechanisms suggested in the literature. It was demonstrated that conventional recalculation of the flame front speed into the burning velocity using density ratio... (More)
Laminar burning velocities, S-L, of nitromethane and air flames at 1 atm and initial gas temperatures, T, of 338 K, 348 K, and 358 K were determined using the heat flux method. Measurements were performed in non-stretched flames, stabilized on a perforated plate burner under adiabatic conditions. The comparison of these new experimental data and recent literature results obtained in spherical flames at 423 K was guided by the analysis of the temperature dependence of S-L using expression S-L = S-L0(T/T-0)(alpha), and also by kinetic modelling of premixed flames employing detailed mechanisms suggested in the literature. It was demonstrated that conventional recalculation of the flame front speed into the burning velocity using density ratio of the unburned and burned gases at equilibrium is inappropriate for spherical nitromethane flames. Both the laminar burning velocities and the power exponents, alpha, were compared with predictions of the kinetic mechanisms. Remaining discrepancies of the modelling and reconciled experimental data were highlighted. (C) 2015 The Combustion Institute. Published by Elsevier Inc. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Laminar burning velocity, Nitromethane, Temperature dependence, Modelling
in
Combustion and Flame
volume
162
issue
10
pages
3803 - 3809
publisher
Elsevier
external identifiers
  • wos:000361925600029
  • scopus:84938218963
ISSN
0010-2180
DOI
10.1016/j.combustflame.2015.07.017
language
English
LU publication?
yes
id
12525767-9bb4-4859-974e-1b56aece834f (old id 8221393)
date added to LUP
2015-11-30 14:08:27
date last changed
2017-06-18 04:15:21
@article{12525767-9bb4-4859-974e-1b56aece834f,
  abstract     = {Laminar burning velocities, S-L, of nitromethane and air flames at 1 atm and initial gas temperatures, T, of 338 K, 348 K, and 358 K were determined using the heat flux method. Measurements were performed in non-stretched flames, stabilized on a perforated plate burner under adiabatic conditions. The comparison of these new experimental data and recent literature results obtained in spherical flames at 423 K was guided by the analysis of the temperature dependence of S-L using expression S-L = S-L0(T/T-0)(alpha), and also by kinetic modelling of premixed flames employing detailed mechanisms suggested in the literature. It was demonstrated that conventional recalculation of the flame front speed into the burning velocity using density ratio of the unburned and burned gases at equilibrium is inappropriate for spherical nitromethane flames. Both the laminar burning velocities and the power exponents, alpha, were compared with predictions of the kinetic mechanisms. Remaining discrepancies of the modelling and reconciled experimental data were highlighted. (C) 2015 The Combustion Institute. Published by Elsevier Inc. All rights reserved.},
  author       = {Nauclér, Jenny and Heimdal Nilsson, Elna and Konnov, Alexander},
  issn         = {0010-2180},
  keyword      = {Laminar burning velocity,Nitromethane,Temperature dependence,Modelling},
  language     = {eng},
  number       = {10},
  pages        = {3803--3809},
  publisher    = {Elsevier},
  series       = {Combustion and Flame},
  title        = {Laminar burning velocity of nitromethane plus air flames: A comparison of flat and spherical flames},
  url          = {http://dx.doi.org/10.1016/j.combustflame.2015.07.017},
  volume       = {162},
  year         = {2015},
}