Laser-induced fluorescence radical measurements in partially premixed bunsen-type methane flames

Norbert H. Heberle; Gregory P. Smith; David R. Crosley; Jay B. Jeffries; Jeffrey A. Muss; Robert W. Dibble

Laser-induced fluorescence radical measurements in partially premixed bunsen-type methane flames

Norbert H. Heberle, Gregory P. Smith, David R. Crosley, Jay B. Jeffries, Jeffrey A. Muss, Robert W. Dibble

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

Abstract

Most residential and commercial gas appliances use two-stage, partially premixed flames; also called Bunsen flames; these consist of an inner premixed flame front and outer nonpremixed flame zone. Nitric oxide emissions are produced by two separate mechanisms in these flames, the thermal and the prompt routes. We have made probe measurements of total NO (and also CO) in a series of partially premixed flames, including flames with inserts and with separators of the two flame zones. Spatially resolved laser-induced fluorescence measurements of both OH and CH map the flame structure, and provide stringent tests of the combustion chemistry mechanism. In particular, CH, which occurs only in the premixed flame front, is the main precursor to prompt NO; its shape and location can be predicted well by a one-dimensional flame code with full chemistry.

Original language	English (US)
State	Published - 1996
Externally published	Yes
Event	34th Aerospace Sciences Meeting and Exhibit, 1996 - Reno, United States Duration: Jan 15 1996 → Jan 18 1996

Other

Other	34th Aerospace Sciences Meeting and Exhibit, 1996
Country/Territory	United States
City	Reno
Period	01/15/96 → 01/18/96

ASJC Scopus subject areas

Space and Planetary Science
Aerospace Engineering

Cite this

@conference{3a8251bbded7414f91158716ace53ab5,

title = "Laser-induced fluorescence radical measurements in partially premixed bunsen-type methane flames",

abstract = "Most residential and commercial gas appliances use two-stage, partially premixed flames; also called Bunsen flames; these consist of an inner premixed flame front and outer nonpremixed flame zone. Nitric oxide emissions are produced by two separate mechanisms in these flames, the thermal and the prompt routes. We have made probe measurements of total NO (and also CO) in a series of partially premixed flames, including flames with inserts and with separators of the two flame zones. Spatially resolved laser-induced fluorescence measurements of both OH and CH map the flame structure, and provide stringent tests of the combustion chemistry mechanism. In particular, CH, which occurs only in the premixed flame front, is the main precursor to prompt NO; its shape and location can be predicted well by a one-dimensional flame code with full chemistry.",

author = "Heberle, {Norbert H.} and Smith, {Gregory P.} and Crosley, {David R.} and Jeffries, {Jay B.} and Muss, {Jeffrey A.} and Dibble, {Robert W.}",

note = "Publisher Copyright: {\textcopyright} 1996, American Institute of Aeronautics and Astronautics, Inc.; 34th Aerospace Sciences Meeting and Exhibit, 1996 ; Conference date: 15-01-1996 Through 18-01-1996",

year = "1996",

language = "English (US)",

}

TY - CONF

T1 - Laser-induced fluorescence radical measurements in partially premixed bunsen-type methane flames

AU - Heberle, Norbert H.

AU - Smith, Gregory P.

AU - Crosley, David R.

AU - Jeffries, Jay B.

AU - Muss, Jeffrey A.

AU - Dibble, Robert W.

PY - 1996

Y1 - 1996

N2 - Most residential and commercial gas appliances use two-stage, partially premixed flames; also called Bunsen flames; these consist of an inner premixed flame front and outer nonpremixed flame zone. Nitric oxide emissions are produced by two separate mechanisms in these flames, the thermal and the prompt routes. We have made probe measurements of total NO (and also CO) in a series of partially premixed flames, including flames with inserts and with separators of the two flame zones. Spatially resolved laser-induced fluorescence measurements of both OH and CH map the flame structure, and provide stringent tests of the combustion chemistry mechanism. In particular, CH, which occurs only in the premixed flame front, is the main precursor to prompt NO; its shape and location can be predicted well by a one-dimensional flame code with full chemistry.

AB - Most residential and commercial gas appliances use two-stage, partially premixed flames; also called Bunsen flames; these consist of an inner premixed flame front and outer nonpremixed flame zone. Nitric oxide emissions are produced by two separate mechanisms in these flames, the thermal and the prompt routes. We have made probe measurements of total NO (and also CO) in a series of partially premixed flames, including flames with inserts and with separators of the two flame zones. Spatially resolved laser-induced fluorescence measurements of both OH and CH map the flame structure, and provide stringent tests of the combustion chemistry mechanism. In particular, CH, which occurs only in the premixed flame front, is the main precursor to prompt NO; its shape and location can be predicted well by a one-dimensional flame code with full chemistry.

UR - http://www.scopus.com/inward/record.url?scp=84962169653&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84962169653

T2 - 34th Aerospace Sciences Meeting and Exhibit, 1996

Y2 - 15 January 1996 through 18 January 1996

ER -

Laser-induced fluorescence radical measurements in partially premixed bunsen-type methane flames

Abstract

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ASJC Scopus subject areas

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