化工学报 ›› 2023, Vol. 74 ›› Issue (S1): 161-164.DOI: 10.11949/0438-1157.20221643

• 流体力学与传递现象 • 上一篇    下一篇

水平方向上冰中受陷气泡形成和分布实验研究

邵苛苛(), 宋孟杰(), 江正勇, 张旋, 张龙, 高润淼, 甄泽康   

  1. 北京理工大学机械与车辆学院,北京 100081
  • 收稿日期:2022-11-19 修回日期:2022-12-26 出版日期:2023-06-05 发布日期:2023-09-27
  • 通讯作者: 宋孟杰
  • 作者简介:邵苛苛(1992—),男,博士研究生,keke.shao@bit.edu.cn
  • 基金资助:
    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)

Experimental study on the formation and distribution of trapped air bubbles in horizontal ice slice

Keke SHAO(), Mengjie SONG(), Zhengyong JIANG, Xuan ZHANG, Long ZHANG, Runmiao GAO, Zekang ZHEN   

  1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Received:2022-11-19 Revised:2022-12-26 Online:2023-06-05 Published:2023-09-27
  • Contact: Mengjie SONG

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20.6 μm/s和9.4 μm/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3.1 μm/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。

关键词: 冻结水膜, 受陷气泡, 冰生长速率, 气泡生长, 气泡分布

Abstract:

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 20.6 μm/s and 9.4 μm/s, needle-shaped bubbles appear and egg-shaped bubbles disappear, respectively. When it is less than 3.1 μm/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.

Key words: freezing water slice, trapped air bubble, ice growth rate, bubble formation, bubble distribution

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