24-10-2012, 01:05 PM
Dynamics of Droplet Collision and Flamefront Motion
ABSTRACT
The present program aims to study the dynamics of droplet collision and flame-flow interaction that are of relevance to
liquid-fueled turbulent combustion in propulsive devices. During the reporting period three classes of phenomena were
investigated, namely: (1) The dynamics of binary droplet collision, especially on the criterion for the breaking of the
inter-droplet surfaces which enables droplet merging. (2) The dynamics of droplet-film collision, especially on the influence
of the film thickness in effecting droplet bouncing versus absorption. (3) The dynamics of droplet-droplet collision of
dissimilar liquids, showing that the initiation of droplet internal superheating and hence microexplosion can be greatly
facilitated by the presence of air bubbles entrained upon coalescence of the colliding droplets.