Analysis of Interior Ballistics Processes of Bulk Loaded Liquid Propellant Guns.
Final rept. 1 Dec 79-15 Jan 83,
SCIENCE APPLICATIONS INC CHATSWORTH CA COMBUSTION SCIENCE AND ADVANCED TECHNOLOGY DEPT
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A transient two-dimensional turbulent reacting multiphase flow model has been developed for the analysis of the interior ballistics process in liquid propellant guns. The analysis accounts for finite rate vaporization and heat release at the liquid-gas interface and predicts the observed evolution of the Taylor cavity through the propellant. Comparisons between predictions and available data show agreement with observed trends in the pressure-time trace. Analysis of the results show that turbulent transport controls the combustion process during all phases of the firing cycle and that chemical kinetics is most critical to flame initiation. Preliminary analysis of the effects of droplet formation at the liquid-gas interface compared with direct liquid-to-gas conversion shows that the formation and consumption of droplets can result in more rapid burning and larger amplitude pressure oscillations. These results indicate that the overall combustion process is initiated. Author
- Ammunition and Explosives