TY - GEN
T1 - Effects of lewis number on spherical flame initiation
AU - Chen, Zheng
AU - Burke, Michael P.
AU - Ju, Yiguang
PY - 2008
Y1 - 2008
N2 - Spherical flame initiation from an ignition kernel is studied by using asymptotic analysis and numerical simulation. The emphasis is placed on investigating the effects of preferential diffusion (Lewis number) on the flame kernel evolution, the critical flame radius and minimum ignition energy. The results show that the critical ignition radius as well as the minimum ignition energy increases significantly with Lewis number. It is also shown that when the radiation heat loss is included, the minimum ignition energy increases, especially for mixtures with high Lewis numbers.
AB - Spherical flame initiation from an ignition kernel is studied by using asymptotic analysis and numerical simulation. The emphasis is placed on investigating the effects of preferential diffusion (Lewis number) on the flame kernel evolution, the critical flame radius and minimum ignition energy. The results show that the critical ignition radius as well as the minimum ignition energy increases significantly with Lewis number. It is also shown that when the radiation heat loss is included, the minimum ignition energy increases, especially for mixtures with high Lewis numbers.
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M3 - Conference contribution
AN - SCOPUS:78149452899
SN - 9781563479373
T3 - 46th AIAA Aerospace Sciences Meeting and Exhibit
BT - 46th AIAA Aerospace Sciences Meeting and Exhibit
T2 - 46th AIAA Aerospace Sciences Meeting and Exhibit
Y2 - 7 January 2008 through 10 January 2008
ER -