A model to predict the oscillation frequency for drops pinned on a vertical planar surface
A model to predict the oscillation frequency for drops pinned on a vertical planar surface
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预测固定在垂直平面上的液滴振荡频率的模型
DOI：
10.1017/jfm.2021.844
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发表时间：
2021
影响因子：
3.7
通讯作者：
Yue Ling
中科院分区：
文献类型：
--
作者：
Jordan Sakakeeny;C. Deshpande;S. Deb;Jorge L. Alvarado;Yue Ling
摘要准确预测垂直平面上液滴横向振动的固有频率对许多液滴的应用具有重要意义。当接触线保持钉扎状态时，由毛细管频率归一化的固有振荡频率主要是平衡接触角和键数($Bo)的函数。为了建立对振荡动力学的全面理解，进行了参数、数值和实验研究。发展了一个无粘性模型来预测大范围内的振荡频率和接触角。该模型揭示了归一化频率与$Bo的标度关系，并通过数值模拟结果进行了验证。对于给定的平衡接触角，横向振荡频率随Bo的减小而减小，这意味着在重力降低的环境中发生液滴振荡时，共振频率将被放大。
Abstract Accurate prediction of the natural frequency for the lateral oscillation of a liquid drop pinned on a vertical planar surface is important to many drop applications. The natural oscillation frequency, normalized by the capillary frequency, is mainly a function of the equilibrium contact angle and the Bond number ($Bo$), when the contact lines remain pinned. Parametric numerical and experimental studies have been performed to establish a comprehensive understanding of the oscillation dynamics. An inviscid model has been developed to predict the oscillation frequency for wide ranges of $Bo$ and the contact angle. The model reveals the scaling relation between the normalized frequency and $Bo$, which is validated by the numerical simulation results. For a given equilibrium contact angle, the lateral oscillation frequency decreases with $Bo$, implying that resonance frequencies will be magnified if the drop oscillations occur in a reduced gravity environment.
影响因子：
3.9
作者：
Sharp, James S.;Farmer, David J.;Kelly, James
通讯作者：
Kelly, James
影响因子：
2.7
作者：
Sakakeeny, Jordan;Ling, Yue
通讯作者：
Ling, Yue