Solidification characteristics of rising immiscible oil droplets in coolant

Solidification characteristics of hexadecane particles injected through a single nozzle into coolants of stagnant pure water, ethylene glycol 30 wt% water solution, and ethylene glycol 50 wt% water solution were investigated. Experimental parameters were varied in the ranges of 22.4 < Rep < 492, 8.79 < Pr < 49.9, 0.0475 < Ste < 0.0741, and 0.0566 < Fo < 1.66. The investigation was focused on the solidification phenomena of hexadecane particles in coolants. The present study is summarized in the following. (1) Empirical equation correlating the drag coefficients of hexadecane particles was proposed, and (2) empirical equations correlating the solidification mass fraction of hexadecane particles were proposed for low injection velocity condition and for higher injection velocity condition independently.