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Thermoacoustically driven flame motion and heat release variation in a swirl-stabilized gas turbine burner investigated by LIF and chemiluminescence

Hubschmid, W. ; Bombach, R. ; Inauen, A. ; Güthe, F. ; Schenker, S. ; Tylli, N. ; Kreutner, W.

In: Experiments in Fluids, 2008, vol. 45, no. 1, p. 167-182

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    Titel
    • Thermoacoustically driven flame motion and heat release variation in a swirl-stabilized gas turbine burner investigated by LIF and chemiluminescence
    Autor
    • Hubschmid, W.. Paul Scherrer Institut, 5232, Villigen PSI, Switzerland
    • Bombach, R.. Paul Scherrer Institut, 5232, Villigen PSI, Switzerland
    • Inauen, A.. Paul Scherrer Institut, 5232, Villigen PSI, Switzerland
    • Güthe, F.. ALSTOM (Schweiz) AG, 5405, Baden-Dättwil, Switzerland
    • Schenker, S.. Paul Scherrer Institut, 5232, Villigen PSI, Switzerland
    • Tylli, N.. Paul Scherrer Institut, 5232, Villigen PSI, Switzerland
    • Kreutner, W.. Paul Scherrer Institut, 5232, Villigen PSI, Switzerland
    Dokumententyp
    • Postprint
    Sprache
    • Englisch
    Veröffentlicht in
    • Experiments in Fluids, 2008, vol. 45, no. 1, p. 167-182. Springer-Verlag
    Andere elektronische Ausgabe
    Klassifikation
    • Technik, Ingenieurwissenschaften
    OAI-PMH-ID
    • oai:doc.rero.ch:317768
    Summary
    Laser-induced fluorescence and chemiluminescence, both phase-locked to the dominant acoustic oscillation, are used to investigate phenomena related to thermoacoustic instability in a swirl-stabilized industrial scale gas turbine burner. The observed sinusoidal phase-averaged flame motion in axial (main flow) direction is analyzed using different schemes for defining the flame position. Qualitative agreement between experimental data and theoretical analysis of the observed flame motion is obtained, interpreted as originating primarily from variation of the burning velocity. The heat release variation during an acoustic cycle is determined from the sinusoidally varying total OH* chemiluminescence intensity