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Dynamic Behavior of Heterogeneous Impinging Droplets onto High Temperature Plate
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 Title & Authors
Dynamic Behavior of Heterogeneous Impinging Droplets onto High Temperature Plate
Lee, Choong Hyun; Kim, Kyung Chun;
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 Abstract
In this experiment, a heterogeneous droplet consisted of de-ionized water and olive oil was made through two 31G injection needles. The injection flow rate was and the droplet size was 2 mm. The droplet was impinged onto a sapphire plate which was heated up to by a heater. Two high speed cameras were used for visualization, and the frame rate was 20,000 fps. A 150W metal halite lamp was used for illumination. The dropping height was fixed to 20 mm and the corresponding Weber number was 10.6 based on water. Due to different boiling points of two liquids, partial boiling features of heterogeneous droplet was observed. At the Leidenfrost condition, micro explosion phenomenon has occurred.
 Keywords
Heterogeneous droplet;Dynamic behavior;Leidenfrost phenomenon;
 Language
Korean
 Cited by
 References
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Y. Kikiuchi, T. Hori and I. Michiyoshi, 1984, "Minimum film boiling temperature for cool down of insulated metals in saturated liquid", Int. J. Heat Mass Transfer, Vol. 28, No. 6, pp. 1105-1114

2.
K. J. Baumeister and F. F. Simon, 1997, "Leidenfrost Temperature-Its Correlation for Liquid Metals, Cryogens, Hydrocabons, and Water". J. Heat Transfer, Vol. 95, No. 2 pp. 166-173

3.
E. Muraa, P. Massolib, C. Jossetc, K. Loubara and J. Bellettrec, 1997, "Study of the micro-explosion temperature of water in oil emulsion droplets during the Leidenfrost effect". Experimental Thermal and Fluid Science, Vol. 43, November 2012, Pages 63-70.