Abstract:
The processes of heterogeneous detonation in a combustible mixture of aluminum nanoparticles ($d_{2}=200$ nm) in oxygen were studied using numerical simulation methods over a wide range of concentrations of aluminum particles. Patterns of cellular detonation in the $3$-cm channel were obtained, and velocities of the leading front were determined. The interaction of detonation with clouds of inert particles of aluminum oxide ($d_{3}=1$ mkm) was investigated and the main regimes were described. Critical concentrations of inert phase for the detonation failure were determined. It was found that their values were lower than in similar processes of heterogeneous detonation of gas suspensions of micron-sized aluminum particles.
Keywords:detonation, gas suspension, aluminum particles, clouds of inert particles, detonation suppression, numerical simulation.
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