The dynamics behavior of successive multiple droplets impacting onto hot surface under high concentration of ethylene glycol aquades solution.

The aim of this research is to reveal the dynamic behavior of the successive multiple 20% ethylene glycol aquades droplet impacting on the hot surface. An experiment has been conducted by utilizing the stainless steel as the hot surface. The diameter of droplet and the impact velocity are 2.8 and 1.1 m/s, respectively. Then, the Weber number is approximately 55. In the present study, an induction heater is utilized to achieve the desired temperature of hot surface. It is set at 110 - 230°C. In addition, image processing technique is applied in order to obtain essential quantitative information from the multiple droplets. Based on the result, it is found that the secondary droplet starts to present at temperature 150°C. While at the temperature 230°C, the bouncing phenomena occurs several times. Finally, the present study has been able to reveal spreading characteristics of the droplet comprehensively and can be used as a starting point to develop further research. [ABSTRACT FROM AUTHOR]