TY - JOUR
T1 - Asymptotic analysis of radiation extinction of stretched premixed flames
AU - Ju, Yiguang
AU - Masuya, Goro
AU - Liu, Fengshan
AU - Hattori, Yuji
AU - Riechelmann, Dirk
N1 - Funding Information:
The authors would like to thank Professor T. Niioka at the Inst. of Fluid Science of Tohoku University for constant support to finish this work. YJ would like to thank Dr J. S. Kim at KIST and Dr K. Maruta at the Institute of Fluid Science of Tohoku University for many helpful discussions. This work is support by NSF B-(2)-10555063.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2000/1
Y1 - 2000/1
N2 - The flammability limit, radiation extinction of stretched premixed flame and effect of non-unity Lewis numbers are analyzed by the large-activation-energy asymptotic method. Particular attention is paid to the effect of Lewis number, the upstream and downstream radiation heat losses as well as the non-linearity of radiation. Explicit expressions for the flame temperature, extinction limit and flammability limit are obtained. The C-shaped extinction curve is reproduced. The dependence of radiation heat loss and the Lewis number effect on the stretch rate and flame separation distance is investigated. The effects of fuel Lewis number, oxidizer Lewis number, upstream radiation heat loss and the non-linearity of radiation on the C-shaped extinction curve are also examined. The results demonstrate a significant influence of these parameters on the radiation extinction and flammability limit and provide a good explanation to the experimental results and numerical simulations.
AB - The flammability limit, radiation extinction of stretched premixed flame and effect of non-unity Lewis numbers are analyzed by the large-activation-energy asymptotic method. Particular attention is paid to the effect of Lewis number, the upstream and downstream radiation heat losses as well as the non-linearity of radiation. Explicit expressions for the flame temperature, extinction limit and flammability limit are obtained. The C-shaped extinction curve is reproduced. The dependence of radiation heat loss and the Lewis number effect on the stretch rate and flame separation distance is investigated. The effects of fuel Lewis number, oxidizer Lewis number, upstream radiation heat loss and the non-linearity of radiation on the C-shaped extinction curve are also examined. The results demonstrate a significant influence of these parameters on the radiation extinction and flammability limit and provide a good explanation to the experimental results and numerical simulations.
KW - Asymptotic analysis
KW - Flammability limit
KW - Radiation extinction
KW - Stretched premixed flame
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U2 - 10.1016/s0017-9310(99)00130-1
DO - 10.1016/s0017-9310(99)00130-1
M3 - Article
AN - SCOPUS:0345476701
SN - 0017-9310
VL - 43
SP - 231
EP - 239
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
IS - 2
ER -