在大型超热中使用等级架构进行持续和增强的核沸
Ji-Xiang Wang1,2,3, Hongmei Wang3, Christopher Salmean1,4
1Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and Technology Hong Kong SAR P. R. China.
Exploration (Beijing, China)
|October 30, 2025
概括
研究人员开发了一种新的纳米微层次的三通道架构,以显著延迟滴水沸中的Leidenfrost点 (LP),提高工业应用的热传递效率.
科学领域:
- 热传递是一种热传递.
- 流体动力学 流体动力学
- 材料科学 材料科学 材料科学
背景情况:
- 滴水沸在工业过程中至关重要,但受到Leidenfrost效应的限制,从而降低了冷却性能.
- 莱登弗罗斯特点 (LP) 标志着向蒸汽膜形成的过渡,阻碍了高效的热传递.
研究的目的:
- 通过提高Leidenfrost点 (LP) 来提高滴水沸性能.
- 为了研究纳米微层次的三通道架构对沸动态和热传递的影响.
主要方法:
- 制造一个纳米微层次的三通道架构,具有很高的比例.
- 对滴水沸行为和热传递的实验分析.
- 使用多力竞争模型进行理论建模.
- 开发一个以物理学为基础的深度神经网络,用于沸预测.
主要成果:
- 新的架构将LP升至273°C,与铜表面 (145°C) 相比,增加了130°C.
- 观察到增强的蒸汽和液体扩散动态,促进了热传递.
- 发现较低的滴滴撞击速度通过操纵撞击模式来延迟LP.
结论:
- 层次结构有效地抑制了Leidenfrost效应,并增强了热传递.
- 这项研究挑战了对液滴影响动态和LP的传统理解.
- 开发的模型提供了精确的滴水沸行为的预测,有助于设备设计.
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