Numerical analysis of a methane-air bunsen flame (2nd report, structures near the burner rim and at inner and outer cone tips)

Nilson Kunioshi, Seishiro Fukutani

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A methane-air premixed flame with equivalence ratio of 1.25 is simulated focusing on the flame structures at the base of the flame and at inner and outer cone tips. Around the burner rim, the entrainment of air from the surrounding is seen to be the main reason for the activation of chemical reactions by promoting large production of O atoms and OH radicals. At the inner cone tip, chemical reactions proceed with large rates, due to flame stretch and to preferential diffusion of H2. CH3 radicals remain above the inner cone tip and around the tip of the outer cone, and oxidation via C1 route leads to formation of CO which is oxidized into CO2, as in any point of the outer cone.

Original languageEnglish
Pages (from-to)374-379
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume62
Issue number593
Publication statusPublished - 1996 Jan
Externally publishedYes

Fingerprint

burners
rims
Fuel burners
numerical analysis
Cones
Numerical analysis
flames
cones
Methane
methane
air
Air
Chemical reactions
chemical reactions
Air entrainment
premixed flames
entrainment
equivalence
Chemical activation
routes

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

@article{2152490633694ff085f42c66657082b4,
title = "Numerical analysis of a methane-air bunsen flame (2nd report, structures near the burner rim and at inner and outer cone tips)",
abstract = "A methane-air premixed flame with equivalence ratio of 1.25 is simulated focusing on the flame structures at the base of the flame and at inner and outer cone tips. Around the burner rim, the entrainment of air from the surrounding is seen to be the main reason for the activation of chemical reactions by promoting large production of O atoms and OH radicals. At the inner cone tip, chemical reactions proceed with large rates, due to flame stretch and to preferential diffusion of H2. CH3 radicals remain above the inner cone tip and around the tip of the outer cone, and oxidation via C1 route leads to formation of CO which is oxidized into CO2, as in any point of the outer cone.",
author = "Nilson Kunioshi and Seishiro Fukutani",
year = "1996",
month = "1",
language = "English",
volume = "62",
pages = "374--379",
journal = "Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B",
issn = "0387-5016",
publisher = "Japan Society of Mechanical Engineers",
number = "593",

}

TY - JOUR

T1 - Numerical analysis of a methane-air bunsen flame (2nd report, structures near the burner rim and at inner and outer cone tips)

AU - Kunioshi, Nilson

AU - Fukutani, Seishiro

PY - 1996/1

Y1 - 1996/1

N2 - A methane-air premixed flame with equivalence ratio of 1.25 is simulated focusing on the flame structures at the base of the flame and at inner and outer cone tips. Around the burner rim, the entrainment of air from the surrounding is seen to be the main reason for the activation of chemical reactions by promoting large production of O atoms and OH radicals. At the inner cone tip, chemical reactions proceed with large rates, due to flame stretch and to preferential diffusion of H2. CH3 radicals remain above the inner cone tip and around the tip of the outer cone, and oxidation via C1 route leads to formation of CO which is oxidized into CO2, as in any point of the outer cone.

AB - A methane-air premixed flame with equivalence ratio of 1.25 is simulated focusing on the flame structures at the base of the flame and at inner and outer cone tips. Around the burner rim, the entrainment of air from the surrounding is seen to be the main reason for the activation of chemical reactions by promoting large production of O atoms and OH radicals. At the inner cone tip, chemical reactions proceed with large rates, due to flame stretch and to preferential diffusion of H2. CH3 radicals remain above the inner cone tip and around the tip of the outer cone, and oxidation via C1 route leads to formation of CO which is oxidized into CO2, as in any point of the outer cone.

UR - http://www.scopus.com/inward/record.url?scp=0029755004&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029755004&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0029755004

VL - 62

SP - 374

EP - 379

JO - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

JF - Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

SN - 0387-5016

IS - 593

ER -