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Communication Dans Un Congrès Année : 2020

Phenomenological reduced-order modeling of subcritical combustion in cryogenic rocket engines: an application to the prediction of high-frequency combustion instabilities

Résumé

The set of equations governing reacting two-phase flows in liquid-propellant rocket engines is simplified and linearized around a steady base flow. In the particular case of a liquid/gas coaxial injector, models for the atomization, evaporation and combustion source terms are derived from a simplified physical description of both the oxidizer liquid core and spray. The resulting equations are projected onto a modal basis, leading to a quasi-linear dynamic description of the evolution of the system. In this paper, detailed model reduction focuses on the evaporation of polydisperse sprays and on the propagation of acoustic waves within the gas.
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Dates et versions

hal-03177668 , version 1 (23-03-2021)

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Guillaume Storck, Luc-Henry Dorey, Sebastien Ducruix, Marie Theron. Phenomenological reduced-order modeling of subcritical combustion in cryogenic rocket engines: an application to the prediction of high-frequency combustion instabilities. AIAA Propulsion and Energy 2020 Forum, Aug 2020, Virtual event, United States. pp.AIAA 2020-3830, ⟨10.2514/6.2020-3830⟩. ⟨hal-03177668⟩
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