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Modelling of O2/CH4 Liquid Rocket Engines injector combustion at Subcritical and Supercritical conditions
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Energy Converter with Inside Two, Three, and Five Connected H2/Air Swirling Combustor Chambers: Solar and Combustion Mode Investigations
Get PDFThis work reports the performance of an energy converter characterized by an emitting parallelepiped element with inside two, three, or five swirling connected combustion chambers. In particular, the idea is to adopt the heat released by H2/air combustion, occurring in the connected swirling chambers, to heat up the emitting surfaces of the thermally-conductive emitting parallelepiped brick. The final goal consists in obtaining the highest emitting surface temperature and the highest power delivered to the ambient environment, with the simultaneous fulfillment of four design constraints: dimension of the emitting surface fixed to 30 × 30 mm2, solar mode thermal efficiency greater than 20%, emitting surface peak temperature T > 1000 K, and its relative ∆T < 100 K in the combustion mode operation. The connected swirling meso-combustion chambers, inside the converter, differ only in their diameters. Combustion simulations are carried out adopting 500 W of injected chemical power, stoichiometric conditions, and detailed chemistry. All provide high chemical efficiency, η > 99.9%, and high peak temperature, but the emitting surface ∆T is strongly sensitive to the geometrical configuration. The present work is related to the “EU-FP7-HRC-Power” project, aiming at developing micro-meso hybrid sources of power, compatible with a thermal/electrical conversion by thermo-photovoltaic cells
O2/CH4 kinetic mechanisms for Aerospace Applications at low pressure and temperature,validity ranges and comparison
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Comparison between Subcritical Cobustion modelling for LO2-CH4 rocket engines at 15MPa using Real and Ideal gas properties
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Comparison between Supercritical Combustion Modelling for LO2-CH4 Rocket Engines at 15MPa and 16.5MPa using Real and Ideal gas properties
No full textComparison between Real and Ideal Sub and Supercritical Combustion Simulations for LO2-CH4 LRE at 15MPa
No full textcomparison between supercrtical combustion modelling for LO2-CH4 rocket engines at 15MPa using real and ideal gas properties
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