表面润湿性对沸腾曲线影响的数值研究。

A numerical investigation of the effect of surface wettability on the boiling curve.

作者信息

Hsu Hua-Yi, Lin Ming-Chieh, Popovic Bridget, Lin Chii-Ruey, Patankar Neelesh A

机构信息

Department of Mechanical Engineering, National Taipei University of Technology, Taipei, Taiwan.

Department of Electrical and Biomedical Engineering, Hanyang University, Seoul, Korea.

出版信息

PLoS One. 2017 Nov 10;12(11):e0187175. doi: 10.1371/journal.pone.0187175. eCollection 2017.

DOI:10.1371/journal.pone.0187175

PMID:29125847

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5681255/

Abstract

Surface wettability is recognized as playing an important role in pool boiling and the corresponding heat transfer curve. In this work, a systematic study of pool boiling heat transfer on smooth surfaces of varying wettability (contact angle range of 5° - 180°) has been conducted and reported. Based on numerical simulations, boiling curves are calculated and boiling dynamics in each regime are studied using a volume-of-fluid method with contact angle model. The calculated trends in critical heat flux and Leidenfrost point as functions of surface wettability are obtained and compared with prior experimental and theoretical predictions, giving good agreement. For the first time, the effect of contact angle on the complete boiling curve is shown. It is demonstrated that the simulation methodology can be used for studying pool boiling and related dynamics and providing more physical insights.

摘要

表面润湿性被认为在池沸腾及相应的传热曲线中起着重要作用。在这项工作中，对不同润湿性（接触角范围为5° - 180°）的光滑表面上的池沸腾传热进行了系统研究并予以报道。基于数值模拟，计算了沸腾曲线，并使用带有接触角模型的流体体积法研究了各区域的沸腾动力学。获得了作为表面润湿性函数的临界热流密度和莱顿弗罗斯特点的计算趋势，并与先前的实验和理论预测进行了比较，结果吻合良好。首次展示了接触角对完整沸腾曲线的影响。结果表明，该模拟方法可用于研究池沸腾及相关动力学，并提供更多的物理见解。