Response of a Swirled Non-Premixed Burner to Fuel Flow Rate Modulation

A.X. Sengissen, T.J. Poinsot, J.F. van Kampen, J.B.W. Kok

    Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

    5 Citations (Scopus)


    Combustion instability studies require the identification of the combustion chamber response. In non-premixed devices, the combustion processes are influenced by oscillations of the air flow rate but may also be sensitive to fluctuations of the fuel flow rate entering the chamber. This paper describes a numerical study of the mechanisms controlling the response of a swirled non-premixed combustor burning natural gas and air. The flow is first characterized without combustion and LDV results are compared to Large Eddy Simulation (LES) data. The non-pulsated reacting regime is then studied and characterized in terms of fields of heat release and equivalence ratio. Finally the combustor fuel flow rate is pulsated at several amplitudes and the response of the chamber is analyzed using phase-locked averaging and first order acoustic analysis.
    Original languageEnglish
    Title of host publicationComplex Effects in Large Eddy Simulations
    EditorsStavros C. Kassinos, Carlos A. Langer, Gianluca Iaccarino, Parviz Moin
    Place of PublicationBerlin, Heidelberg
    ISBN (Electronic)978-3-540-34233-5
    ISBN (Print)978-3-540-34234-2
    Publication statusPublished - 2005
    EventSymposium on Complex Effects in Large-Eddy Simulation 2005 - Limassol, Cyprus
    Duration: 21 Sep 200524 Sep 2005

    Publication series

    NameLecture Notes in Computational Science and Engineering
    ISSN (Print)1439-7358


    ConferenceSymposium on Complex Effects in Large-Eddy Simulation 2005


    • Combustion chamber
    • Ring vortex
    • Equivalence ratio
    • Turbulent combustion
    • Combustion instability


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