Abstract
In this study, fuel droplet of about 20μm diameter that is assumed to be in combustion chamber is injected by experimental apparatus. After that, droplet goes to high temperature atmosphere. We observed and experimentally considered that fuel droplet evaporation and self-explosion phenomenon. Heat flux was changed by initial velocity in this study. It was found that even if the heating rate is low, it shows self-explosion phenomenon in the diffusion flame when he distillation temperature of the fuel droplet decreases. Furthermore, the evaporation rate increased linearly as the initial velocity became faster, but it does not affect breakup diameter.