在低韦伯数下对超水表面的滴滴冲击
Chandra Sekhar Rauta1, Gautam Majumdar2,3, Sandip Sarkar1
1SERB Sponsered Microfluidics Laboratory, Department of Mechanical Engineering, Jadavpur University, Kolkata, West Bengal 700032, India.
Langmuir : the ACS journal of surfaces and colloids
|September 8, 2025
概括
研究人员研究了在低韦伯数 (We) 时对超疏水表面 (SHS) 的水滴影响. 他们开发了一种最大传播的新模型,并观察到独特的滴滴行为,从而改善了对低We滴滴动态的理解.
科学领域:
- 流体动力学 流体动力学
- 表面科学是一门学科.
- 材料科学 材料科学 材料科学
背景情况:
- 超水表面 (SHS) 具有独特的抗液体性能.
- 滴滴对SHS的冲击动态对于各种应用至关重要.
- 较低的韦伯数 (We < 17) 对SHS滴滴影响的模式不太了解.
研究的目的:
- 为了研究在低韦伯数下SHS上的水滴动态.
- 为最大扩散因子 (βmax) 开发一个改进的理论模型.
- 分析滴滴形态,并介绍持有时间 (th) 的概念.
主要方法:
- 在AZ31合金上使用化学涂层工艺制造SHS.
- 在低韦伯数下对水滴冲击动态的实验研究.
- 开发和验证一个新的理论模型最大滴滴传播.
主要成果:
- 提出的βmax理论模型与实验数据有很好的一致性.
- 在滴水高度演变中观察到过渡的圆形结构和双最小值.
- 介绍了保持时间 (th) 作为We的函数 (th = 5.2-2.84 We^0.2).
结论:
- 这项研究为低韦伯数制度中的滴滴动态提供了更深入的见解.
- 新模型改善了对SHS最大滴滴传播的预测.
- 发现有助于设计SHS用于需要低能量的液体相互作用的应用.
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