理论和三维分子动力学研究滴滴在滑剂注入的多孔表面上的可湿性和流动性
Shao-Fei Zheng1,2, Yi-Ying Gao1,2, Li-Tao Yang1,2
1State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China.
Langmuir : the ACS journal of surfaces and colloids
|September 7, 2023
概括
滑剂注入的多孔表面增强滴滴的流动性,以改善滴状凝结中的热传递. 具有薄薄的滑剂层的非隐形配置通过减少拖动和固定效应来优化性能.
科学领域:
- 材料科学 材料科学 材料科学
- 表面科学是一门学科.
- 热力学是一种热力学.
背景情况:
- 用滑剂注入的多孔表面 (LIPS) 提供了增强的滴滴流动性,以改善滴状凝结中的热传递.
- 了解LIPS复杂的四相湿系统至关重要,但由于多个界面相互作用和表面因素,这是一项挑战.
研究的目的:
- 在LIPS上探索滴水的湿透性和流动性.
- 阐明控制这些表面滴滴行为的基础物理.
- 为了确定最佳的配置,增强热传输.
主要方法:
- 热力学理论分析.热力学理论分析.
- 使用粗粒水和六模型进行三维分子动力学模拟.
- 构建用于滴滴配置的相位图.
主要成果:
- 开发了液滴配置的相位图,考虑了界面相互作用,表面结构和滑剂厚度.
- 对于各种配置,滴滴滑动和凝聚动态被定量定义.
- 一个非遮蔽的配置 (下方封装状态) 被确定为高滴水流动性的最佳.
结论:
- 无遮蔽配置最大限度地减少粘性阻力,并消除接触线钉定,促进有效的滴水去除,以滴水凝结.
- 建议使用稳定的滑剂层,油水和水固体相互作用较低,厚度相对较低,以构建有效的滑动表面.
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