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ID 31645
file
title alternative
Mechanism of Flame Stability in a Rotating Flow : Combustion Characteristics of Tubular Flames in a Hydrogen/Air Mixture
creator
Yamamoto, Kazuhiro
Asai, Hiroshi
Onuma, Yoshiaki
subject
Premixed Combustion
Swirling Flow
Stability
Extinction
Mass Transfer
Structure
Tubular Flame
NDC
Technology. Engineering
abstract
The effects of rotation on the stability and structure of tubular flames have been investigated for a lean hydrogen/air mixture, and mechanism of flame stability in a rotating flow has been discussed. Results show that with increasing intensity of rotation, (1) the flame diameter increases, while thickness of the luminous zone decreases, (2) the fuel concentration at the extinction decreanes, i. e., the stable region expands, (3) the radial temperature distribution becomes an M-shaped profiles, and (4) flame temperature T_f increases near extinction. These results are almost the same as those obtained for a methane/air mixture. The mechanism for these phenomena is supposed to be explained with the coupled effects of pressure diffusion and stretch effect. The present experimental results provide very useful information for discussing the flame stability and the transport phenomena in a vortex flow.
journal title
日本機械学會論文集. B編
volume
Volume 64
issue
Issue 624
start page
2677
end page
2682
date of issued
1998-08-25
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/110002397203
department
Graduate School of Engineering



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