TY - GEN
T1 - Laminar flame speeds of cyclohexane and mono-alkylated cyclohexanes at elevated pressures
AU - Wu, Fujia
AU - Kelley, Andrew P.
AU - Law, Chung King
N1 - Funding Information:
This research was supported by the Air Force Office of Scientific Research under the technical monitoring of Dr. Julian M. Tishkoff. It is a pleasure to acknowledge helpful discussions with Yuxuan Xin and Dr. Peng Zhang.
Copyright:
Copyright 2015 Elsevier B.V., All rights reserved.
PY - 2011
Y1 - 2011
N2 - Laminar flame speeds of cyclohexane, methyl-cyclohexane and ethyl-cyclohexane at atmospheric and elevated pressures up to 20 atm were determined in a heated, dual-chamber vessel using nonlinear extrapolation. Calculated values using JetSurf 2.0 mechanism yielded satisfactory agreement with the present measurements at all pressures, with slight over-prediction at 1 atm. Results show that the flame speeds of methyl-cyclohexane and ethyl-cyclohexane are similar, while those of cyclohexane are higher by 5% at 1 atm and 13% at 10 atm. Examination of computed flame structure shows that owing to its special, symmetric ring structure, cyclohexane produces substantially more chain-branching C2 and C4 intermediates than the relatively less reactive C3 intermediates. On the contrary, a more balanced distribution of C2-C4 intermediates is present in flames of methyl- and ethyl-cyclohexane due to the substitution of alkyl group for H.
AB - Laminar flame speeds of cyclohexane, methyl-cyclohexane and ethyl-cyclohexane at atmospheric and elevated pressures up to 20 atm were determined in a heated, dual-chamber vessel using nonlinear extrapolation. Calculated values using JetSurf 2.0 mechanism yielded satisfactory agreement with the present measurements at all pressures, with slight over-prediction at 1 atm. Results show that the flame speeds of methyl-cyclohexane and ethyl-cyclohexane are similar, while those of cyclohexane are higher by 5% at 1 atm and 13% at 10 atm. Examination of computed flame structure shows that owing to its special, symmetric ring structure, cyclohexane produces substantially more chain-branching C2 and C4 intermediates than the relatively less reactive C3 intermediates. On the contrary, a more balanced distribution of C2-C4 intermediates is present in flames of methyl- and ethyl-cyclohexane due to the substitution of alkyl group for H.
UR - http://www.scopus.com/inward/record.url?scp=84946718510&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84946718510&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84946718510
T3 - Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2011
SP - 331
EP - 348
BT - Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2011
PB - Combustion Institute
T2 - Fall Technical Meeting of the Eastern States Section of the Combustion Institute 2011
Y2 - 9 October 2011 through 12 October 2011
ER -