Effects of lewis number on spherical flame initiation

Zheng Chen, Michael P. Burke, Yiguang Ju

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publication46th AIAA Aerospace Sciences Meeting and Exhibit
StatePublished - Dec 1 2008
Event46th AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States
Duration: Jan 7 2008Jan 10 2008

Other

Other46th AIAA Aerospace Sciences Meeting and Exhibit
CountryUnited States
CityReno, NV
Period1/7/081/10/08

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering

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    Chen, Z., Burke, M. P., & Ju, Y. (2008). Effects of lewis number on spherical flame initiation. In 46th AIAA Aerospace Sciences Meeting and Exhibit [2008-0977]