Effects of oxidizer preheating and dilution on the extinction and structure of CH4-O2-Ar counterflowing diffusion flames

Masao Takeuchi; Kunihito Hamatsu; Yuji Yahagi; Shingo Nakahara

Effects of oxidizer preheating and dilution on the extinction and structure of CH₄-O₂-Ar counterflowing diffusion flames

Masao Takeuchi, Kunihito Hamatsu, Yuji Yahagi, Shingo Nakahara

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

Abstract

The effects of oxidizer preheating and dilution levels of fuel and oxygen by inert gas on the extinction and structure of counterflow CH₄-O₂-Ar diffusion flame were studied experimentally and numerically. The OPPDIF code and the GRI-Mech 2.11 database were used for the calculation. The experimental results agreed well with the numerical calculation results. The detailed measurement and calculation of the flame structure revealed that a flame location was in the oxidizer flow side at smaller stoichiometric mixture fraction (F_st). The region of F_st from 0.2 to 0.6 approximately corresponded to the transition region. In this region, the extinction limit depended on the oxidizer and fuel side conditions. The flame location was quite important factor to understand the effects of dilution levels and oxidizer preheating on the extinction phenomena and of the present study.

Original language	English
Number of pages	1
Publication status	Published - 2002 Dec 1
Event	29th International Symposium on Combustion - Sapporo, Japan Duration: 2002 Jul 21 → 2002 Jul 26

Conference

Conference	29th International Symposium on Combustion
Country/Territory	Japan
City	Sapporo
Period	02/7/21 → 02/7/26

ASJC Scopus subject areas

Engineering(all)

Cite this

@conference{e4941b43726647d2bfbc19afbe534f7f,

title = "Effects of oxidizer preheating and dilution on the extinction and structure of CH4-O2-Ar counterflowing diffusion flames",

abstract = "The effects of oxidizer preheating and dilution levels of fuel and oxygen by inert gas on the extinction and structure of counterflow CH4-O2-Ar diffusion flame were studied experimentally and numerically. The OPPDIF code and the GRI-Mech 2.11 database were used for the calculation. The experimental results agreed well with the numerical calculation results. The detailed measurement and calculation of the flame structure revealed that a flame location was in the oxidizer flow side at smaller stoichiometric mixture fraction (Fst). The region of Fst from 0.2 to 0.6 approximately corresponded to the transition region. In this region, the extinction limit depended on the oxidizer and fuel side conditions. The flame location was quite important factor to understand the effects of dilution levels and oxidizer preheating on the extinction phenomena and of the present study.",

author = "Masao Takeuchi and Kunihito Hamatsu and Yuji Yahagi and Shingo Nakahara",

year = "2002",

month = dec,

day = "1",

language = "English",

note = "29th International Symposium on Combustion ; Conference date: 21-07-2002 Through 26-07-2002",

}

TY - CONF

T1 - Effects of oxidizer preheating and dilution on the extinction and structure of CH4-O2-Ar counterflowing diffusion flames

AU - Takeuchi, Masao

AU - Hamatsu, Kunihito

AU - Yahagi, Yuji

AU - Nakahara, Shingo

PY - 2002/12/1

Y1 - 2002/12/1

N2 - The effects of oxidizer preheating and dilution levels of fuel and oxygen by inert gas on the extinction and structure of counterflow CH4-O2-Ar diffusion flame were studied experimentally and numerically. The OPPDIF code and the GRI-Mech 2.11 database were used for the calculation. The experimental results agreed well with the numerical calculation results. The detailed measurement and calculation of the flame structure revealed that a flame location was in the oxidizer flow side at smaller stoichiometric mixture fraction (Fst). The region of Fst from 0.2 to 0.6 approximately corresponded to the transition region. In this region, the extinction limit depended on the oxidizer and fuel side conditions. The flame location was quite important factor to understand the effects of dilution levels and oxidizer preheating on the extinction phenomena and of the present study.

AB - The effects of oxidizer preheating and dilution levels of fuel and oxygen by inert gas on the extinction and structure of counterflow CH4-O2-Ar diffusion flame were studied experimentally and numerically. The OPPDIF code and the GRI-Mech 2.11 database were used for the calculation. The experimental results agreed well with the numerical calculation results. The detailed measurement and calculation of the flame structure revealed that a flame location was in the oxidizer flow side at smaller stoichiometric mixture fraction (Fst). The region of Fst from 0.2 to 0.6 approximately corresponded to the transition region. In this region, the extinction limit depended on the oxidizer and fuel side conditions. The flame location was quite important factor to understand the effects of dilution levels and oxidizer preheating on the extinction phenomena and of the present study.

UR - http://www.scopus.com/inward/record.url?scp=0036936502&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036936502&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:0036936502

T2 - 29th International Symposium on Combustion

Y2 - 21 July 2002 through 26 July 2002

ER -

Effects of oxidizer preheating and dilution on the extinction and structure of CH₄-O₂-Ar counterflowing diffusion flames

Abstract

Conference

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this