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ID 31650
file
title alternative
Structures of Tubular Flames : 1st Report, Structures of the Tubular Flames of Lean Methane/Air Mixtures in a Rotating Stretched-Flow Field
creator
Sakai, Yukio
subject
Combustion
Premixed Combustion
Tubular Flame
Flame Structure
Lean Mixture
Stretch
Rotating Flow Field
NDC
Technology. Engineering
abstract
The tulular flames of lean methane/air mixtures in a rotating-flow field have been analyzed for their concentrations of stable species and temperature distributions, and their structures have been investigated. The results show that the tubular flame consists of an inner hot gas core of burned gas and an outer region of the unburned mixture, and that the flame structure is essentially the same as that of the one-dimensional, flat, premixed flame. As the extinction limit is approached, the flame diameter decreases and the concentrations of carbon monoxide and hydrogen behind the flame zone increase. Hence, the extinction of the tubular flame of lean methane/air mixtures is caused by incomplete combustion with stretch as it is with other stretched flames. As the density inside the flame is lower than that outside, the flame front is rendered smooth and cylindrical by the rotational motion of the flow.
journal title
日本機械学會論文集. B編
volume
Volume 56
issue
Issue 524
start page
1178
end page
1185
date of issued
1990-04-25
publisher
一般社団法人日本機械学会
issn
0387-5016
ncid
language
jpn
nii type
Journal Article
HU type
Journal Articles
DCMI type
text
format
application/pdf
text version
publisher
rights
社団法人日本機械学会
本文データは学協会の許諾に基づきCiNiiから複製したものである
relation is version of URL
http://ci.nii.ac.jp/naid/110002402183
department
Graduate School of Engineering