Effects of lewis number on spherical flame initiation

Zheng Chen; Michael P. Burke; Yiguang Ju

Effects of lewis number on spherical flame initiation

Zheng Chen, Michael P. Burke, Yiguang Ju

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English (US)
Title of host publication	46th AIAA Aerospace Sciences Meeting and Exhibit
State	Published - Dec 1 2008
Event	46th AIAA Aerospace Sciences Meeting and Exhibit - Reno, NV, United States Duration: Jan 7 2008 → Jan 10 2008

Other

Other	46th AIAA Aerospace Sciences Meeting and Exhibit
Country	United States
City	Reno, NV
Period	1/7/08 → 1/10/08

All Science Journal Classification (ASJC) codes

Aerospace Engineering

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@inproceedings{2a2a12b27ff04748a55c9dc82577d6d5,

title = "Effects of lewis number on spherical flame initiation",

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.",

author = "Zheng Chen and Burke, {Michael P.} and Yiguang Ju",

year = "2008",

month = dec,

day = "1",

language = "English (US)",

isbn = "9781563479373",

booktitle = "46th AIAA Aerospace Sciences Meeting and Exhibit",

note = "46th AIAA Aerospace Sciences Meeting and Exhibit ; Conference date: 07-01-2008 Through 10-01-2008",

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T1 - Effects of lewis number on spherical flame initiation

AU - Chen, Zheng

AU - Burke, Michael P.

AU - Ju, Yiguang

PY - 2008/12/1

Y1 - 2008/12/1

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

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 -