The purpose of this paper is to analyze the effect of pressure fluctuations on the combustion efficiency of the hydrogen fuel injected into the supersonic oxidizing cross flow. The pressure fluctuations are imposed on inlet air flow and also on the fuel flow stream. Two different situations are considered: the combustion chamber once without and again with the inlet standing oblique shock wave.

    Design/methodology/approach

    The pressure fluctuations are imposed on inlet air flow and also on the fuel flow stream. Two different situations are considered: the combustion chamber once without and again with the inlet standing oblique shock wave. The unsteady turbulent reacting flow solver is developed to simulate the supersonic flow field in the combustion chamber with detail chemical kinetics, to predict the time-variation of the combustion efficiency due to the imposed pressure fluctuations.

    Findings

    The results show that the response of the reacting flow field depends on both the frequency of fluctuations and the existence of the inlet shock wave. In addition, the inlet standing shock wave has some attenuating role, but the reacting flow shows an amplifying role on imposed oscillations which is also augmented by imposing anti-phase fluctuations on both inlet and fuel flow streams.

    Originality/value

    This study is performed to analyze the instabilities in the supersonic combustion which has not been considered before in this manner.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Inlet air and fuel flow pressure fluctuation effect on supersonic combustion


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    2020-10-30


    Format / Umfang :

    1 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Shock Oscillation and Pressure Fluctuation in Unstarted Hypersonic Inlet Flow

    Xue, Longsheng / Wang, Chengpeng / Jiao, Yun et al. | AIAA | 2017


    Combustion characteristics of an inlet/supersonic combustor model

    Gamba, Mirko / Miller, Victor / Mungal, Godfrey et al. | AIAA | 2012


    Combustion Characteristics of an Inlet/Supersonic Combustor Model

    Gamba, M. / Miller, V. / Mungal, G. et al. | British Library Conference Proceedings | 2012


    Supersonic-inlet boundary-layer bleed flow

    Harloff, Gary J. / Smith, Gregory E. | AIAA | 1996


    Inlet efficiency parameters for supersonic combustion ramjet engines

    Curran, E. T. / Bergsten, M. Brian | TIBKAT | 1964