摘要
为研究水冻结成冰过程中出现的受陷气泡形成和分布特性,在水平Hele-Shaw cell内进行了水膜冻结实验。研究发现,冰中存在蛋状和针状两种类型的气泡,其行为受冰生长速率的影响。当冰生长速率小于20.6μm/s和9.4μm/s时,分别会有针状气泡出现和蛋状气泡消失的现象,当冰的生长速率小于3.1μm/s时冰中不会出现气泡。随着冰的生长,气泡的尺寸呈现先增加后趋于恒定的趋势。研究结果有助于指导优化防/除冰技术优化。
To investigate the formation and distribution characteristics of trapped air bubble during freezing process of water,a water slice freezing experiment is conducted in a horizontal Hele-Shaw cell.Results show two types of bubbles in ice,egg-shaped and needle-shaped,and their behavior is affected by the ice growth rate.When the rate is less than 20.6μm/s and 9.4μm/s,needle-shaped bubbles appear and egg-shaped bubbles disappear,respectively.When it is less than 3.1μm/s,no bubble appears.As the ice grows,the bubble size increases first and then be constant.These results may help to optimize anti-icing/deicing technology.
作者
邵苛苛
宋孟杰
江正勇
张旋
张龙
高润淼
甄泽康
SHAO Keke;SONG Mengjie;JIANG Zhengyong;ZHANG Xuan;ZHANG Long;GAO Runmiao;ZHEN Zekang(School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China)
出处
《化工学报》
EI
CSCD
北大核心
2023年第S01期161-164,共4页
CIESC Journal
基金
国家自然科学基金项目(52076013)
北京市自然科学基金项目(3212024)
国家外国专家项目计划项目(G2022178023 L)。
关键词
冻结水膜
受陷气泡
冰生长速率
气泡生长
气泡分布
freezing water slice
trapped air bubble
ice growth rate
bubble formation
bubble distribution
作者简介
通信作者:宋孟杰(1984-),男,博士,教授,mengjie.song@bit.edu.cn;第一作者:邵苛苛(1992-),男,博士研究生,keke.shao@bit.edu.cn。
