桥梁过渡在形隙中的非对称性属性
Alexandr Malijevský1, Martin Pospíšil1
1University of Chemistry and Technology, Czech Academy of Sciences, Institute of Chemical Process Fundamentals, The , Department of Molecular Modelling, 165 02 Prague, Czech Republic and Department of Physical Chemistry, Prague, 166 28 Prague, Czech Republic.
Physical review. E
|February 7, 2025
概括
波形墙壁之间的桥梁过渡取决于墙壁的粗度. 通过波长变化减少墙壁波纹导致连续膜增长,而减少振幅则具有过渡的最低值.
科学领域:
- 物理 物理学 物理
- 物理化学 物理化学
- 材料科学 材料科学 材料科学
背景情况:
- 桥梁过渡是局限系统中的关键现象.
- 了解这些转换是控制界面上的流体行为的关键.
- 以前的研究往往侧重于理想化的几何形状,忽视了墙壁波纹效应.
研究的目的:
- 为了研究墙壁粗度对桥梁过渡的影响.
- 分析减少墙壁波纹如何影响桥接的发生和特性.
- 要区分波数 (k) 与振幅 (A) 在这些转换上变化的影响.
主要方法:
- 在形墙壁之间的桥梁过渡的理论分析.
- 检查弱波纹墙壁的极限.
- 使用密度函数理论进行数值验证.
主要成果:
- 通过减少波数 (k) 来减少波纹,导致连续的桥梁膜生长,厚度分离为~k^{-2/3}.
- 过渡位置接近于平面裂中的毛细血管凝聚,为~k^{2/3}.
- 通过降低振幅 (A) 来减少波纹,需要A超过一个最小值 (A_min kL^2) 才能发生桥接.
结论:
- 减少墙壁粗度及其对桥梁过渡的影响有两种不同的途径.
- 振幅值 (A_min) 是一个关键参数,用于在粗度降低的系统中架桥.
- 密度函数理论证实了预测的缩放规律和过渡行为.
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