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Performance of methanol kinetic mechanisms at oxy-fuel conditions

Nauclér, Jenny LU ; Sileghem, Louis; Heimdal Nilsson, Elna LU ; Verhelst, Sebastian and Konnov, Alexander LU (2015) In Combustion and Flame 162(5). p.1719-1728
Abstract
Methanol premixed flames were studied under oxy-fuel conditions for the first time. Laminar burning velocities were measured with the heat flux method at atmospheric pressure for unburnt gas temperatures of 308-358 K within a stoichiometric range of phi = 0.8-1.5. A linear relationship between temperature and laminar burning velocity on a log-log scale was observed. The experimental results are discussed by comparison to modeling results from three kinetic mechanisms. All models gave an overprediction of the laminar burning velocity. It was demonstrated that implementation of recently advised rate constants for reactions of methanol with O-2, HO2, H and OH, together with modification of the third-body efficiency for H2O in the... (More)
Methanol premixed flames were studied under oxy-fuel conditions for the first time. Laminar burning velocities were measured with the heat flux method at atmospheric pressure for unburnt gas temperatures of 308-358 K within a stoichiometric range of phi = 0.8-1.5. A linear relationship between temperature and laminar burning velocity on a log-log scale was observed. The experimental results are discussed by comparison to modeling results from three kinetic mechanisms. All models gave an overprediction of the laminar burning velocity. It was demonstrated that implementation of recently advised rate constants for reactions of methanol with O-2, HO2, H and OH, together with modification of the third-body efficiency for H2O in the decomposition of the formyl radical, significantly improves model performance both for methanol combustion in air and at oxy-fuel conditions. (C) 2014 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
Methanol, Kinetic model, Laminar flame, Sensitivity analysis, CO2
in
Combustion and Flame
volume
162
issue
5
pages
1719 - 1728
publisher
Elsevier
external identifiers
  • wos:000358561500009
  • scopus:84929390349
ISSN
0010-2180
DOI
10.1016/j.combustflame.2014.11.033
language
English
LU publication?
yes
id
a079c67b-cbef-4a8b-8439-e18718c94b78 (old id 7773508)
date added to LUP
2015-09-18 15:46:36
date last changed
2017-10-08 04:03:52
@article{a079c67b-cbef-4a8b-8439-e18718c94b78,
  abstract     = {Methanol premixed flames were studied under oxy-fuel conditions for the first time. Laminar burning velocities were measured with the heat flux method at atmospheric pressure for unburnt gas temperatures of 308-358 K within a stoichiometric range of phi = 0.8-1.5. A linear relationship between temperature and laminar burning velocity on a log-log scale was observed. The experimental results are discussed by comparison to modeling results from three kinetic mechanisms. All models gave an overprediction of the laminar burning velocity. It was demonstrated that implementation of recently advised rate constants for reactions of methanol with O-2, HO2, H and OH, together with modification of the third-body efficiency for H2O in the decomposition of the formyl radical, significantly improves model performance both for methanol combustion in air and at oxy-fuel conditions. (C) 2014 The Combustion Institute. Published by Elsevier Inc. All rights reserved.},
  author       = {Nauclér, Jenny and Sileghem, Louis and Heimdal Nilsson, Elna and Verhelst, Sebastian and Konnov, Alexander},
  issn         = {0010-2180},
  keyword      = {Methanol,Kinetic model,Laminar flame,Sensitivity analysis,CO2},
  language     = {eng},
  number       = {5},
  pages        = {1719--1728},
  publisher    = {Elsevier},
  series       = {Combustion and Flame},
  title        = {Performance of methanol kinetic mechanisms at oxy-fuel conditions},
  url          = {http://dx.doi.org/10.1016/j.combustflame.2014.11.033},
  volume       = {162},
  year         = {2015},
}