A model to predict the oscillation frequency for drops pinned on a vertical planar surface

被引:6
|
作者
Sakakeeny, J. [1 ]
Deshpande, C. [2 ]
Deb, S. [2 ]
Alvarado, J. L. [2 ,3 ]
Ling, Y. [1 ]
机构
[1] Baylor Univ, Dept Mech Engn, Waco, TX 76643 USA
[2] Texas A&M Univ, Dept Mech Engn, College Stn, TX 77843 USA
[3] Texas A&M Univ, Dept Engn Technol & Ind Distribut, College Stn, TX 77843 USA
基金
美国国家科学基金会;
关键词
contact lines; drops; CONTACT; TRANSITION; DYNAMICS;
D O I
10.1017/jfm.2021.844
中图分类号
O3 [力学];
学科分类号
08 ; 0801 ;
摘要
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.
引用
收藏
页数:14
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