Observation of water droplet motion in a shear flow
Observation of water droplet motion in a shear flow
复制标题
剪切流中水滴运动的观察
DOI：
10.1016/j.expthermflusci.2022.110775
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发表时间：
2023
期刊：
影响因子：
--
通讯作者：
Yoshiyuki Tsuji
中科院分区：
文献类型：
--
作者：
Jiawen Zhang;Takaya Sato;Takeshi Ooyama;Keiji Koumura;Takahiro Ito;Yoshiyuki Tsuji
虽然许多研究已经调查了剪切流中的液滴，这些液滴的特点是不完全了解。本文报道了我们的实验显示结果固着液滴在充分发展的湍流剪切流和他们的运动开始。从侧视图和仰视图进行可视化。此外，液滴高度远小于边界层厚度，液滴运动强烈地受到湍流速度波动的影响。液滴向前变形并沿展向扩散。前侧和后侧接触角恢复平衡位置，其随时间对称地变化，并且与固着液滴振荡没有明显关系。该模型基于驻波的共振，很好地预测了液滴的振荡频率，除了最低模式。基于临界空气速度和液滴高度，运动开始被充分近似的韦伯数和雷诺数之间的一个简单的经验关系。
Although numerous studies have investigated droplets in shear flows, the features of these droplets are incompletely understood. This paper reports our experimental visualization results of sessile droplets in fully developed turbulent shear flows and the onset of their movement. The visualization was performed from the side and bottom views. Furthermore, the droplet height is much smaller than the boundary-layer thickness, and the droplet motions are strongly affected by turbulent velocity fluctuation. The droplets were deformed toward the front and spread in a spanwise direction. The front and rear-side contact angles recover the balance position, that changes symmetrically over time and are not clearly related to sessile droplet oscillation. The droplet oscillation frequencies were well predicted by the model based on the resonant vibrations of the standing waves except for the lowest mode. Based on the critical air velocity and droplet height, the motion onset was adequately approximated by a simple empirical relation between the Weber and Reynolds numbers.
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影响因子：
3.7
作者：
Ding, Hang;Spelt, Peter D. M.
通讯作者：
Spelt, Peter D. M.
影响因子：
3.2
作者：
Beawer Barwari;S. Burgmann;Artur Bechtold;M. Rohde;U. Janoske
通讯作者：
Beawer Barwari;S. Burgmann;Artur Bechtold;M. Rohde;U. Janoske
流体流变学和润湿特性对剪切流液滴运动的影响
DOI：
10.1002/pamm.201900068
发表时间：
2019
期刊：
PAMM
影响因子：
--
作者：
Barwari B;Burgmann S;Rohde M;Janoske U.
通讯作者：
Janoske U.
影响因子：
2.7
作者：
Patrick Seiler;M. Gloerfeld;I. Roisman;C. Tropea
通讯作者：
Patrick Seiler;M. Gloerfeld;I. Roisman;C. Tropea
影响因子：
3.9
作者：
Sharp, James S.;Farmer, David J.;Kelly, James
通讯作者：
Kelly, James