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- W2028004444 abstract "The mixing and combustion of liquid oxygen (LOX) and gaseous methane of a shear coaxial injector operating under supercritical pressures have been numerically investigated. The near-field flow and flame dynamics are examined in depth, with emphasis placed on the flame-stabilization mechanisms. The model accommodates the full conservation laws and real-fluid thermodynamics and transport phenomena over the entire range of fluid states of concern. The injector flowfield is characterized by the evolution of the three mixing layers originating from the trailing edges of the two concentric tubes of the injector. As a consequence of the strong inertia of the oxygen stream and light density of methane, a diffusion-dominated flame is anchored in the wake of the LOX post and propagates downstream along the boundary of the oxygen stream. The large-scale vortices shedding from the outer rim of the LOX postengulf methane into the wake recirculation region to react with gasified oxygen. The frequencies of vortex shedding match closely those of the flow over a rear-facing step, mainly due to the large density disparity between LOX and gaseous methane. The effects of the momentum-flux ratio of the two streams are also examined. A higher-momentum methane stream enhances mixing and shortens the potential cores of both the LOX and methane jets." @default.
- W2028004444 created "2016-06-24" @default.
- W2028004444 creator A5026519837 @default.
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- W2028004444 date "2007-01-01" @default.
- W2028004444 modified "2023-10-10" @default.
- W2028004444 title "Near-field flow and flame dynamics of LOX/methane shear-coaxial injector under supercritical conditions" @default.
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- W2028004444 doi "https://doi.org/10.1016/j.proci.2006.08.106" @default.
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