在疏水的微挖掘表面上模拟滴状凝结.
Simrandeep Bahal1, Chander Shekhar Sharma1
1Thermofluidics Research Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Ropar, Rupnagar, 140 001 Punjab, India.
Langmuir : the ACS journal of surfaces and colloids
|December 7, 2023
概括
微挖掘的疏水表面通过促进较早的滴水去除,增强了凝结热传递. 数字建模揭示了微中自发的露水,与平面表面相比,显著增加了表面更新和热流.
科学领域:
- 热传递热量转移的方法
- 表面科学是一门学科.
- 流体动力学 流体动力学
背景情况:
- 滴向凝结热传递对于热管理至关重要.
- 滴滴离开疏水表面决定了传热效率.
- 微的表面提供了增强凝结的潜力.
研究的目的:
- 在微的疏水表面上数值建模滴状凝结.
- 分析涉及的各种表面更新机制.
- 为了研究微槽几何学对传热的影响.
主要方法:
- 扩展了对凝结热传递的1D建模方法.
- 整合的个人滴滴贡献,用于整体热量流量估计.
- 解释了滴滴的生长,凝聚,浸泡,膨胀形成,露水和重力倾倒.
主要成果:
- 与平面表面相比,微槽加快了凝析物流失,减少了覆盖面积,增加了热量流.
- 微槽的自发排水被确定为占主导地位的表面更新机制.
- 最佳的微槽尺寸 (深度~200微米,宽度<100微米) 提高了热性能.
结论:
- 微挖掘的疏水表面显著改善了凝结热传递.
- 自发的潮湿是提高这些结构表面更新的关键.
- 量身定制微槽几何结构对于优化传热效率至关重要.
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