TY - GEN
T1 - Supercritical combustion of general fluids in laminar counterflows
AU - Wang, Xingjian
AU - Huo, Hongfa
AU - Yang, Vigor
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2013
Y1 - 2013
N2 - A counterflow configuration is considered to study flame responses of laminar diffusion flames for general fluid mixtures over the entire thermodynamic regimes. Both subcritical and supercritical temperatures and pressures are included. A unified treatment of thermophysical properties based on fundamental thermodynamic theory and extended corresponding state principle is incorporated into the flame calculations in an opposed flow field. A two-point temperature-controlling continuation method is applied to treat the singularity problem at the turning points on the folded S-shaped curve. The resultant numerical scheme is capable of studying laminar counterflow flame structures over the entire S-curve at any fluid state with detailed chemical mechanism. Both oxygen/hydrogen and oxygen/methane flames are investigated over a broad range of pressures from 0.5 atm to 200 atm. The strain rate varies from a small value to the maximum value (up to 2.0×108 s-1) in extinction state. The effects of oxygen injection temperature on the flame structure are also discussed in detail.
AB - A counterflow configuration is considered to study flame responses of laminar diffusion flames for general fluid mixtures over the entire thermodynamic regimes. Both subcritical and supercritical temperatures and pressures are included. A unified treatment of thermophysical properties based on fundamental thermodynamic theory and extended corresponding state principle is incorporated into the flame calculations in an opposed flow field. A two-point temperature-controlling continuation method is applied to treat the singularity problem at the turning points on the folded S-shaped curve. The resultant numerical scheme is capable of studying laminar counterflow flame structures over the entire S-curve at any fluid state with detailed chemical mechanism. Both oxygen/hydrogen and oxygen/methane flames are investigated over a broad range of pressures from 0.5 atm to 200 atm. The strain rate varies from a small value to the maximum value (up to 2.0×108 s-1) in extinction state. The effects of oxygen injection temperature on the flame structure are also discussed in detail.
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U2 - 10.2514/6.2013-1165
DO - 10.2514/6.2013-1165
M3 - Conference contribution
AN - SCOPUS:85088755181
SN - 9781624101816
T3 - 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
BT - 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
PB - American Institute of Aeronautics and Astronautics Inc.
T2 - 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
Y2 - 7 January 2013 through 10 January 2013
ER -