物理
边界层
气流
机械
流量(数学)
图层(电子)
分层流
经典力学
气象学
热力学
湍流
纳米技术
材料科学
作者
Zhongyu Shi,Zhenlong Wu,Huijun Tan,Yao Liu
出处
期刊:Physics of Fluids
[American Institute of Physics]
日期:2024-07-01
卷期号:36 (7)
被引量:1
摘要
The deformation and movement of droplets is widely relevant in many fields of research. The present work experimentally investigates the evolution of a single droplet interacting with an air boundary layer. A series of experiments are carried out using a high-speed photography technique to determine the effects of the airflow velocity, drop height, and droplet size. The morphological characteristics can be classified into three types according to the experiments. The outcomes indicate that both the drop height and the airflow velocity significantly influence the maximum streamwise spreading length, but only the drop height has an impact on the maximum lateral spreading width. The maximum streamwise spreading factor follows a power function relationship with WeRe−0.5. In addition, the crater maximum streamwise and lateral spreading diameters are mainly influenced by the drop height. An energy conversion model is established by considering the effects of the aerodynamic drag force, surface tension, and viscous force. This study provides experimental reference data for the scenario of a droplet interacting with an air boundary layer.
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