Experimental and numerical study on bubble dynamics and heat transfer during nucleate boiling of FC-72
Experimental and numerical study on bubble dynamics and heat transfer during nucleate boiling of FC-72
复制标题
FC-72泡核沸腾过程中气泡动力学和传热的实验与数值研究
DOI：
10.1016/j.ijheatmasstransfer.2019.05.061
复制
发表时间：
2019-08-01
影响因子：
5.2
通讯作者：
Yu, Bo
中科院分区：
文献类型：
--
作者：
Cao, Zhizhu;Zhou, Jie;Yu, Bo
y 在本文中，我们通过实验和数值研究了 FC-72 气泡在水平硅表面上生长和离开过程中的气泡动力学和传热。在数值方法中，动态界面通过三维流体耦合体积和水平集（VOSET）方法来捕获。使用 3D-IDEAL 算法求解具有表面张力和重力的不可压缩两相流的纳维-斯托克斯方程以及连续性和能量方程。三维固体壁也耦合到求解器中，以研究核态沸腾过程中受热固体表面的响应。使用工作流体 FC-72 进行实验，以研究泡核沸腾过程中的气泡行为和传热。在预测生长期间气泡形状时，模拟结果与实验数据之间观察到良好的一致性。还发现该方法预测的饱和FC-72的出发直径与Phan相关性非常吻合。获得并分析了气泡附近的温度分布和空间平均热通量。 (C) 2019 Elsevier Ltd. 保留所有权利。
y In this paper, we study the bubble dynamics and heat transfer during a growing and departing bubble of FC-72 on horizontal silicon surfaces experimentally and numerically. In the numerical method, the dynamical interface is captured by the three-dimensional coupled volume of fluid and level set (VOSET) method. The Navier-Stokes equations for the incompressible two-phase flows with surface tension and gravity, along with the continuity and energy equations are solved using the 3D-IDEAL algorithm. The three dimensional solid wall is also coupled into the solver to study the response of a heated solid surface during nucleate boiling. An experiment with working fluid FC-72 was set up to investigate the bubble behavior and heat transfer during the nucleate boiling process. Good agreement is observed between the simulation results and experimental data in prediction of bubble shape during the growth time. It is also found that the departure diameter of saturated FC-72 predicted by the proposed method matches very well with Phan's correlation. The temperature distribution near the bubble and the spatial averaged heat flux are obtained and analyzed. (C) 2019 Elsevier Ltd. All rights reserved.