Forced flame response measurement in a gas turbine combustor with high hydrogen fuel

K. T. Kim, J. G. Lee, Bryan David Quay, D. A. Santavicca

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The forced response of swirl-stabilized lean-premixed turbulent flames to acoustic oscillations in a hydrogen enriched laboratory-scale gas turbine combustor was experimentally investigated. Nonlinear flame transfer function measurements were taken to investigate the flame's heat release response to upstream acoustic perturbations. This analysis shows that the dynamics of natural gas-air premixed flames are characterized by several regimes: the linear, transition, and first and second nonlinear regimes, depending upon steady-state flame geometry, modulation frequency, and amplitude of excitation. The present results show that the flame geometry changes from a dihedral V flame to an enveloped M flame with an increase in hydrogen mole fraction, and the changes in steady-state flame structures have a significant impact on the flame's response to acoustic modulations. The present results suggest that the M flame, unlike the V flame, has the unique dynamic characteristic of acting as a damper of flow perturbations. The response of the M flame remains in the linear regime, irrespective of the shedding of a vortex-ring structure, because the interaction between the large-scale structure and the flame is not strongly coupled.

    Original languageEnglish (US)
    Title of host publication27th Annual International Pittsburgh Coal Conference 2010, PCC 2010
    Pages2163-2173
    Number of pages11
    Volume3
    StatePublished - Dec 1 2010
    Event27th Annual International Pittsburgh Coal Conference 2010, PCC 2010 - Istanbul, Turkey
    Duration: Oct 11 2010 → …

    Other

    Other27th Annual International Pittsburgh Coal Conference 2010, PCC 2010
    CountryTurkey
    CityIstanbul
    Period10/11/10 → …

    All Science Journal Classification (ASJC) codes

    • Geochemistry and Petrology
    • Geotechnical Engineering and Engineering Geology

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