Effect of the Combined Burning-Surface/ Particle Motion on Aluminum Agglomeration

摘要

A qualitative model has been developed for aluminum particle agglomeration. Assuming a uniform distribution of the particles, the combined motion of the burning surface in solid propellants together with particles has been analyzed. The time needed for particle agglomeration depends on the velocity of the burning surface, the radius, and the volume fraction of the particles. It is assumed that the lifting of the agglomerates from the burning surface toward the gaseous phase occurs after complete filling of the condensed layer by particles. The obtained conclusions are in qualitative agreement with experimental data.