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Prashant Tarey,Jaiho Kim(김재호),Valeny I. Levitas,Dongsung Ha(하동성),Jae Hyun Park(박재현),Heesung Yang(양희성) 한국추진공학회 2015 한국추진공학회지 Vol.19 No.6
In this study, the influence of Al particle size, as an additive for solid propellant, on the mechanical erosion of the carbon-composite nozzle was evaluated. A new model which can predict the size and distribution of the agglomerated reaction product(Al(l)/Al₂O₃(l)) was established, and the size of agglomerate were calculated according to the various initial size of Al in the solid propellant. With predicted results of the model, subsequently, the characteristics of mechanical erosion on the carbon-composite nozzle was estimated using a commercial CFD software, STAR CCM+. The result shows that the smaller the initial Al particles are, in the solid propellant, the lower is the mechanical erosion rate of the composite nozzle wall, especially for the nano-size Al particle.