Experimental Study on Double-droplets Evaporation in High Temperature Gas Flow

Droplet evaporation experimental system was established. The characteristics of single-droplet and double-droplets evaporation was studied by suspending droplets using droplet evaporation experimental equipment. The results indicated that the evaporation of doubledroplets is similar to that of single-droplet. The droplet interaction causes the coupling of steam concentration field around droplets and this raise the steam concentration around droplets, lower the mass transfer rate and the droplet evaporation rate. The droplets interaction influence on evaporation is strong in pure radiative condition and is weak in radiative-convective coupling condition.