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 Dibble

Research output: Contribution to conferencePaperpeer-review

1 Scopus citations

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 languageEnglish (US)
StatePublished - Jan 1 1996
Event34th Aerospace Sciences Meeting and Exhibit, 1996 - Reno, United States
Duration: Jan 15 1996Jan 18 1996

Other

Other34th Aerospace Sciences Meeting and Exhibit, 1996
CountryUnited States
CityReno
Period01/15/9601/18/96

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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