Journal of Flow Visualization and Image Processing

ISSN for PRINT: 1065-3090

For Online Access

Best Paper Award Selection - Editorial Board Site

2002, Volume9

Issue 2&3

174 pages

Issue price - $280.00

Shigeaki Inada
Department of Mechanical System Engineering, Gunma University, 1-5-1 Tenjincho, Kiryu, 376-8515, Japan

Youhei Kawahara
Department of Mechanical System Engineering, Gunma University, 1-5-1 Tenjincho, Kiryu 376-8515, Japan

Wen-Jei Yang
Department of Mechanical Engineering and Applied Mechanics, University of Michigan, Ann Arbor, Michigan 48109, U.S.A.

The generation behavior of the minute vapor bubble which arose in the liquid—solid contact surface (wetting surface) at the initial stage of the collision was photographed from the backside of the quartz heating surface. In the heating surface temperature range from 180°C to 520°C, the effect of the heating surface temperature and the elapsed time after the collision on the number of the bubble generation was examined. With the increase in the heating surface temperature, the number of the bubble generation increases. Many bubbles were observed at the initial stage of droplet collision. The size of the dry spot, that is, attached area of the bubble increases with the increase in the heating surface temperature.

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