Sooting limits of spherical methane diffusion flames in microgravity

J. L. Taylor; P. B. Sunderland; Z. Sun; D. P. Stocker; D. L. Urban; B. H. Chao; R. L. Axelbaum

Sooting limits of spherical methane diffusion flames in microgravity

J. L. Taylor
, P. B. Sunderland
, Z. Sun
, D. P. Stocker
, D. L. Urban
, B. H. Chao
, R. L. Axelbaum

Research output: Contribution to conference › Paper › peer-review

Abstract

Limiting conditions for soot-particle inception were studied in microgravity spherical diffusion flames burning CH₄ at 1 atm. Nitrogen was supplied to the CH₄ and/or oxygen to obtain the broadest available range of stoichiometric mixture fraction. Results for CH₄ supported previous findings for ethylene. Soot-free conditions were favored at increased stoichiometric mixture fraction and there was no observed effect of convection direction on the sooting limits. The sooting limits followed a linear relationship between adiabatic flame temperature and stoichiometric mixture fraction. Several interesting phenomena were observed, i.e., ignition was always performed just after entry into microgravity, but the flow start time and the size of the initial flow surge were varied. Some flames appeared to extinguish after growing to a size that was too large to support reaction. This is an abstract of a paper presented at the 30th International Symposium on Combustion (Chicago, IL 7/25-30/2004).

Original language	English
Pages	51
Number of pages	1
State	Published - 2004
Event	30th International Symposium on Combustion, Abstracts of Works-in-Progress Poster Presentations - Chicago, IL, United States Duration: Jul 25 2004 → Jul 30 2004

Conference

Conference	30th International Symposium on Combustion, Abstracts of Works-in-Progress Poster Presentations
Country/Territory	United States
City	Chicago, IL
Period	07/25/04 → 07/30/04

Cite this

@conference{08c68ef8b8384b6e8a3d68b9458457f9,

title = "Sooting limits of spherical methane diffusion flames in microgravity",

abstract = "Limiting conditions for soot-particle inception were studied in microgravity spherical diffusion flames burning CH4 at 1 atm. Nitrogen was supplied to the CH4 and/or oxygen to obtain the broadest available range of stoichiometric mixture fraction. Results for CH4 supported previous findings for ethylene. Soot-free conditions were favored at increased stoichiometric mixture fraction and there was no observed effect of convection direction on the sooting limits. The sooting limits followed a linear relationship between adiabatic flame temperature and stoichiometric mixture fraction. Several interesting phenomena were observed, i.e., ignition was always performed just after entry into microgravity, but the flow start time and the size of the initial flow surge were varied. Some flames appeared to extinguish after growing to a size that was too large to support reaction. This is an abstract of a paper presented at the 30th International Symposium on Combustion (Chicago, IL 7/25-30/2004).",

author = "Taylor, \{J. L.\} and Sunderland, \{P. B.\} and Z. Sun and Stocker, \{D. P.\} and Urban, \{D. L.\} and Chao, \{B. H.\} and Axelbaum, \{R. L.\}",

year = "2004",

language = "English",

pages = "51",

note = "30th International Symposium on Combustion, Abstracts of Works-in-Progress Poster Presentations ; Conference date: 25-07-2004 Through 30-07-2004",

}

TY - CONF

T1 - Sooting limits of spherical methane diffusion flames in microgravity

AU - Taylor, J. L.

AU - Sunderland, P. B.

AU - Sun, Z.

AU - Stocker, D. P.

AU - Urban, D. L.

AU - Chao, B. H.

AU - Axelbaum, R. L.

PY - 2004

Y1 - 2004

N2 - Limiting conditions for soot-particle inception were studied in microgravity spherical diffusion flames burning CH4 at 1 atm. Nitrogen was supplied to the CH4 and/or oxygen to obtain the broadest available range of stoichiometric mixture fraction. Results for CH4 supported previous findings for ethylene. Soot-free conditions were favored at increased stoichiometric mixture fraction and there was no observed effect of convection direction on the sooting limits. The sooting limits followed a linear relationship between adiabatic flame temperature and stoichiometric mixture fraction. Several interesting phenomena were observed, i.e., ignition was always performed just after entry into microgravity, but the flow start time and the size of the initial flow surge were varied. Some flames appeared to extinguish after growing to a size that was too large to support reaction. This is an abstract of a paper presented at the 30th International Symposium on Combustion (Chicago, IL 7/25-30/2004).

AB - Limiting conditions for soot-particle inception were studied in microgravity spherical diffusion flames burning CH4 at 1 atm. Nitrogen was supplied to the CH4 and/or oxygen to obtain the broadest available range of stoichiometric mixture fraction. Results for CH4 supported previous findings for ethylene. Soot-free conditions were favored at increased stoichiometric mixture fraction and there was no observed effect of convection direction on the sooting limits. The sooting limits followed a linear relationship between adiabatic flame temperature and stoichiometric mixture fraction. Several interesting phenomena were observed, i.e., ignition was always performed just after entry into microgravity, but the flow start time and the size of the initial flow surge were varied. Some flames appeared to extinguish after growing to a size that was too large to support reaction. This is an abstract of a paper presented at the 30th International Symposium on Combustion (Chicago, IL 7/25-30/2004).

UR - https://www.scopus.com/pages/publications/10644228709

M3 - Paper

AN - SCOPUS:10644228709

SP - 51

T2 - 30th International Symposium on Combustion, Abstracts of Works-in-Progress Poster Presentations

Y2 - 25 July 2004 through 30 July 2004

ER -

Sooting limits of spherical methane diffusion flames in microgravity

Abstract

Conference

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