Mechanism of a drop impact on an another immiscible one sitting on the superhydrophobic surface

被引：0
作者：
Liao, Bin [1 ]
Zhang, Longfei [1 ]
Bu, Yang [1 ]
Li, Xuanxuan [1 ]
Lin, Xin [1 ]
Wang, Chao [1 ]
Chen, Shanqun [1 ]
机构：
[1] Key Laboratory for Mechanics, Anhui Polytechnic University, Wuhu
来源：
Zhendong yu Chongji/Journal of Vibration and Shock | 2024年 / 43卷 / 14期
关键词：
dimensionless parameter; drop collision; energy; interface; superhydrophobic surface;
D O I：
10.13465/j.cnki.jvs.2024.14.010
中图分类号：
学科分类号：
摘要：
The evolution of a drop impact on an another immiscible one sitting on the superhydrophobic surface as well as its intrinsic mechanism were systematically studied. Three typical evolution patterns of drop collision, namely, the attachment mode, bounce-off I mode, and bounce-off II mode, were verified by the numerical simulations. Based on the energy budget, the influences of Weber number (We), Bond number (Bo), and Ohnesorg number (Oh) on the dynamical behaviors of drop collision were revealed. In addition, the regime maps of typical evolution patterns of drop collision with the above dimensionless parameters were established. It is found that the energy transfer, conversion, and viscous dissipation between the colliding drops directly affect the dynamical behaviors of drop collision. With the decrease of Oh, the decrease of Bo, and the increase of We, the typical evolution pattern of drop collision shows a transition from the attachment mode to the bounce-off mode. The influence of We-Oh on the typical evolution pattern of drop collision is approximately the same as We-Bo. © 2024 Chinese Vibration Engineering Society. All rights reserved.
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页码：80 / 90
页数：10
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