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首页> 外文期刊>Experimental Thermal and Fluid Science: International Journal of Experimental Heat Transfer, Thermodynamics, and Fluid Mechanics >Dynamic behaviors of droplet impact and spreading: A universal relationship study of dimensionless wetting diameter and droplet height
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Dynamic behaviors of droplet impact and spreading: A universal relationship study of dimensionless wetting diameter and droplet height

机译：液滴冲击和扩散的动态行为：无因次润湿直径和液滴高度的通用关系研究

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摘要

A notable universal relationship has been proposed in the literature for the evolution of dimensionless droplet height and wetting diameter during the initial spreading stage of droplet impingement. In this study, this universal relationship was investigated by employing three sets of measurements. Sequential images were recorded, and the whole droplet profile ensembles were plotted to facilitate this study. These sets of experiments were designed by changing impact velocity, surface hydrophobicity, or solution property. The experimental results illustrate that the importance of parameters causing the data variation is in the order of surface hydrophobicity > initial impact velocity > surfactant on wetting diameter, and surface hydrophobicity approximate to initial impact velocity > surfactant on droplet height. No universal relationship was observed for dimensionless droplet height and wetting diameter.
机译：文献中提出了一个显着的普遍关系，即在液滴撞击的初始扩散阶段，无量纲的液滴高度和润湿直径的演变。在这项研究中，通过采用三组测量方法研究了这种普遍关系。记录顺序图像，并绘制整个液滴轮廓图，以促进这项研究。通过更改冲击速度，表面疏水性或溶液性质来设计这些实验集。实验结果表明，引起数据变化的参数的重要性依次为：表面疏水性>初始冲击速度>表面活性剂对润湿直径的大小，表面疏水性近似于初始冲击速度>表面活性剂对液滴高度的影响。没有观察到无量纲的液滴高度和润湿直径的普遍关系。

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