Force balance at the transition from selective withdrawal to viscous entrainment.
Force balance at the transition from selective withdrawal to viscous entrainment.
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DOI：
10.1103/physrevlett.102.144501
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发表时间：
2009-04
影响因子：
8.6
通讯作者：
F. Blanchette;Wendy W. Zhang
中科院分区：
文献类型：
--
作者：
F. Blanchette;Wendy W. Zhang
我们模拟了在选择性退出机制中稳态界面的演化。当抽出液层中粘性流动所产生的向上拉力克服了由于表面张力而产生的下拉力时，选择性抽出结束。低层动态并不重要。对表面张力的主要贡献来自界面较弱偏转的较大区域，而不是表面最变形的较小区域。基于这一想法的比例估计产生的结果与模拟和之前的实验在数量上都一致。
We simulate the evolution of the steady-state interface in the selective withdrawal regime. Selective withdrawal ends when the upward pull exerted by the viscous flow in the withdrawing liquid layer overcomes the downward force due to surface tension. The lower-layer dynamics are unimportant. The dominant contribution to the surface-tension force comes from the large area where the interface is weakly deflected, instead of the small area where the surface is most distorted. A scaling estimate based on this idea yields results that agree quantitatively with both simulations and previous experiments.