Year: 2003
Type: conference-paper
Abstract: Experimental study was carried out to reveal evaporation characteristics of emulsion droplet on a hot surface. Detail measurements of onset of micro-explosion and temporal variation of droplet temperature were made for three base fuels at surface temperature of 700 K. The fuel in water emulsions consisting base fuel and water, doped with small amount of surfactant, were tested after degasification. Water coalescence occurred and formation of transparent droplets which surrounded smaller single opaque droplets were observed as in the case for suspended droplet combustion. The waiting times for the onset of micro-explosion were correlated with the Weibull distribution curves and those shape parameter twice of unity. The waiting time became shorter with higher boiling point of base fuel. The droplet thermometry showed that microexplosion occurred during droplet heat-up resulting in the above-mentioned shape parameter.
Authors: Seiki TERAJI, Hajime TANAKA, Daisuke SEGAWA, Hiroshi YAMASAKI, Toshikazu KADOTA
Institutions: Osaka Prefecture University, Ehime University
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2563474064