The impact, freezing, and melting processes of a water droplet on an inclined cold surface

被引：74
作者：
Jin, Zheyan [1 ]
Sui, Dongyu [1 ]
Yang, Zhigang [2 ]
机构：
[1] Tongji Univ, Sch Aerosp Engn & Appl Mech, Shanghai 200092, Peoples R China
[2] Tongji Univ, Sch Automot Studies, Shanghai 201804, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2015年 / 90卷
关键词：
Impact; Freezing; Melting; Droplet; Inclined; Cold surface; ICING PROCESS; DEFORMATION; DYNAMICS; PLATE; MODEL;
D O I：
10.1016/j.ijheatmasstransfer.2015.06.086
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The present study experimentally investigated the effects of droplet size and surface temperature on the impact, freezing, and melting processes of a water droplet on an inclined cold surface. The temperature of the inclined surface was changed from room temperature 20.0 degrees C to -14.0 degrees C while water droplets of three sizes (D-0 = 2.21, 2.92, and 3.31 mm) were tested. The results show that the increase of droplet size led to the increases of spreading time, spreading maximum diameter, gliding maximum diameter, and maximum displacement of foremost point. Besides, during the relaxation phase, as the decrease of surface temperature, the formost point retracted a longer distance and the spreading factor decreased more smoothly. In addition, test plate temperature was found to have an effect on the freezing time, air bubble sizes, and frost accretion. At last, the melting processes of the ice beads under different conditions were also illustrated and compared. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码：439 / 453
页数：15
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