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Radical Concentration Measurements in Hydrocarbon Diffusion Flames

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Book cover Soot Formation in Combustion

Part of the book series: Springer Series in Chemical Physics ((CHEMICAL,volume 59))

Abstract

Two investigations of radical concentrations in hydrocarbon diffusion flames are discussed: (1) a comparison of experimental measurements on OH, H atom, O atom, CH, and CH3 with detailed computations of flame structure in a laminar, CH4/air flame and (2) new measurements of OH concentrations in the soot oxidation region of both CH4/air and C2H4/air diffusion flames. For the comparison study the concentration profiles have been plotted in terms of the local mixture fraction, after matching the scalar dissipation rate at the stoichiometric surface. The overall agreement in the shape and location of the profiles is best for the major radicals OH, H atom, and O atom, but less satisfactory for the hydrocarbon radicals. For the OH measurements in the soot oxidation region, profile data have been successfully obtained in the presence of significant amounts of soot. These quantitative OH concentrations will help test and guide the development of soot formation models, all of which currently must rely upon calculated or assumed values.

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Author information

Authors and Affiliations

  1. Building and Fire Research Laboratory, NIST, Gaithersburg, Maryland, 20899, USA

    Kermit C. Smyth & Thomas S. Norton

  2. Department of Chemistry, George Washington University, Washington, District of Columbia, 20052, USA

    J. Houston Miller

  3. Department of Mechanical Engineering, Yale University, New Haven, Connecticut, 06520, USA

    Mitchell D. Smooke

  4. Department of Mechanical Engineering, PA State University, University Park, Pennsylvania, 16802, USA

    Rahul Puri, Marlow Moser & Robert J. Santoro

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  1. Kermit C. Smyth
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  2. Thomas S. Norton
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  3. J. Houston Miller
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  4. Mitchell D. Smooke
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  5. Rahul Puri
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  7. Robert J. Santoro
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Editors and Affiliations

  1. Fachbereich Chemie, Universität Kaiserslautern, Erwin-Schrödinger-Strasse, Gebäude 54, D-67663, Kaiserslautern, Deutschland

    Henning Bockhorn

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© 1994 Springer-Verlag Berlin Heidelberg

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Smyth, K.C. et al. (1994). Radical Concentration Measurements in Hydrocarbon Diffusion Flames. In: Bockhorn, H. (eds) Soot Formation in Combustion. Springer Series in Chemical Physics, vol 59. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-85167-4_7

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  • DOI: https://doi.org/10.1007/978-3-642-85167-4_7

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-85169-8

  • Online ISBN: 978-3-642-85167-4

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