板上的洞:排水液膜的双门破裂.
Ayush K Dixit1, Chunheng Zhao2, Stéphane Zaleski3,4
1University of Twente, Physics of Fluids Department, Max Planck Center Twente for Complex Fluid Dynamics, and J. M. Burgers Center for Fluid Dynamics, P.O. Box 217, 7500AE Enschede, Netherlands.
Physical review letters
|March 13, 2026
概括
当向外的驱动力和空腔扭曲达到双重值时,液膜破裂发生. 在此下方,表面张力重新密封了膜,解释了微米厚的膜穿孔,并允许控制喷雾形成和呼吸膜.
科学领域:
- 流体动力学 流体动力学
- 表面物理学的表面物理.
- 材料科学 是一种材料科学.
背景情况:
- 经典破裂理论侧重于纳米尺度的分子力.
- 微米厚的液体薄膜的穿孔机制尚不清楚.
- 了解膜破裂对于喷雾形成和呼吸疗法等过程至关重要.
研究的目的:
- 阐明控制微米厚液体薄膜破裂的机制.
- 为了确定决定电影开放与愈合的关键条件.
- 为控制液体薄膜破裂提供见解.
主要方法:
- 排水液板的直接数值模拟.
- 在纸板中模拟一个引入的气泡 (空腔).
- 分析驱动力,空腔扭曲,表面张力,惯性和粘度之间的相互作用.
主要成果:
- 只有当达到一个双重门时,才会发生不可逆转的破裂:足够的向外驱动力和显著的腔体扭曲.
- 如果没有达到任何一个值,表面张力会驱动腔腔愈合并重新密封膜.
- 破裂时间表取决于惯性和粘度之间的平衡.
结论:
- 双值机制解释了微米厚的液体薄膜穿孔.
- 控制驱动力和缺陷几何学可以预测和管理薄膜断裂.
- 这些发现对喷雾形成,波折和呼吸膜技术有影响.
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