Abstract This research is motivated by the issue associated with high frequency combustion instability. Large eddy simulation was performed to investigate spontaneous combustion instability in an air/LO2/C2H5OH tripropellant air heater. The simulation predicts self-excited transverse oscillations. Overall behavior of combustion instability including pressure time histories, mode shapes, Rayleigh index and unsteady response of the injector were studied in detail. Special emphasis was given to the flame behavior, droplet trajectories, pressure evolutions, and formation of large-scale vortical structures during combustion instability in present air heater. Furthermore, in contrast to previous investigations, a new process is identified in the simulation that may feed energy into the acoustic mode and drive combustion instability.


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    Title :

    Large eddy simulation of combustion instability in a tripropellant air heater


    Contributors:
    Yuan, Lei (author) / Shen, Chibing (author)

    Published in:

    Acta Astronautica ; 129 ; 59-73


    Publication date :

    2016-08-05


    Size :

    15 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English






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    Hu, P. / Song, L. / Wei, F. | British Library Conference Proceedings | 1996


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    Hu, P. / Beijing University of Aeronautics and Astronautics | British Library Conference Proceedings | 1994


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