过冷
过冷
冰的形成
透明冰
冰晶
冰核
机械
物理
热力学
气象学
大气科学
成核
传热
海冰
北极冰盖
南极海冰
作者
Xianzhuang Yao,Jiajun Ju,Zhigang Yang,Xian Yi,Zheyan Jin
出处
期刊:Physics of Fluids
[American Institute of Physics]
日期:2021-10-01
卷期号:33 (10)
被引量:15
摘要
In the present study, we carried out an experimental investigation of the impinging and freezing processes of a supercooled large water droplet on an ice surface. One high speed camera was used to measure the dynamic motions of the water droplet while two charge coupled device (CCD) cameras were adopted to obtain the images of the freezing process and the freezing morphologies, respectively. The effects of the water droplet temperature and the ice surface temperature on the impact and freezing processes of the water droplet were carefully evaluated. The results showed that the subcooling degree of the water droplet had an apparent influence not only on the spreading process but on the freezing morphology as well. When the subcooling temperature of the water droplet was high (e.g., Tw = –3.0 °C), a triangle cross-section profile formed. However, once the subcooling temperature of the water droplet was relatively low (e.g., Tw = –9.0 °C), the final ice morphology consisted of two parts: one part was a cone-like bead in the center while the other part was an ice ring at the periphery. Moreover, at the same water droplet temperature, raising the ice surface temperature led to an increase in the maximum spreading factor.
科研通智能强力驱动
Strongly Powered by AbleSci AI