Abstract
Abstract The behavior of an array of liquid oxygen droplets vaporizing and burning in a gaseous mixture of hydrogen and water vapor at conditions supercritical for both propellants is investigated. The main objective is to investigate the effect of species and temperature non-uniformity (due to the presence of other droplets) on a LOX droplet transcritical behavior. Previously validated high-pressure phase equilibria computation algorithms and appropriate methods for the evaluation of thermophysical properties over wide temperature and pressure ranges are used. A simplified “parallel stream” configuration is considered. However, the contribution of the mass vaporized to the overall mass flux, is included in a quasi-steady manner. Hence the longitudinal velocity is non-uniform. Finite-rate chemical kinetics is used with a reduced four-step mechanism, three of which are assumed to be at partial equilibrium. The droplets are followed in a Lagrangian manner. The model used to predict the droplet behavior incl...
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