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- W2314498873 abstract "Research towards predicting and quantifying undesirable transient axial combustion instability symptoms in solid-propellant rocket motors necessitates a comprehensive numerical model for internal ballistic simulation under dynamic flow and combustion conditions. In the present investigation, important elements of the framework for numerically evaluating the usage of reactive aluminum particles for the suppression of axial shock wave development are brought forward. A primary focus is placed on evaluating the qualitative trends associated with the time-dependent reduction in size of the aluminum particles as they move downstream in the central internal flow. In order to simplify the scope of this preliminary study, the reactive particle size regression is stipulated to occur at a designated uniform rate for a given simulated firing. Individual transient internal ballistic simulation runs for a reference composite-propellant cylindrical-grain motor show the evolution of the axial pressure wave for a given initiating pressure disturbance, and particle loading and size diminishment rate. Particle loading distributions at various locations in the motor chamber’s internal flow, at different times into the given firing (pre- and postdisturbance), are presented. The limit pressure wave magnitudes at a later reference time in a given firing simulation run are collected for a series of runs at different particle size reduction rates, in order to assist in the evaluation of identifiable trends. The numerical results demonstrate that the ability of the particles to suppress axial wave development improves as the nominal particle regression rate becomes lower." @default.
- W2314498873 created "2016-06-24" @default.
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- W2314498873 date "2012-07-30" @default.
- W2314498873 modified "2023-09-28" @default.
- W2314498873 title "Effect of Diminishing Particle Size on Solid Rocket Combustion Instability Symptom Suppression" @default.
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- W2314498873 doi "https://doi.org/10.2514/6.2012-3727" @default.
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