A numerical investigation of nucleate boiling at a constant surface temperature
A numerical investigation of nucleate boiling at a constant surface temperature
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恒定表面温度下核沸腾的数值研究
DOI：
10.1016/j.applthermaleng.2014.09.022
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发表时间：
2015-09
影响因子：
6.4
通讯作者：
Jiang S.C.
中科院分区：
文献类型：
--
作者：
Jia H.W.;Zhang P.;Fu X.;Jiang S.C.
本研究提出了一个全面的模型，其中包括多相模拟的系统方法，例如，平滑蒸发模型、修正高度函数算法和微层模型。本研究中采用的数值框架是基于VOF界面捕捉方法，这是通过实现外部函数的改进。修正后的高度函数比Youngs方法产生更精确的界面法向量，并且也呈现更小的伪速度。此外，高度函数显示出良好的收敛性与网格细化。为了验证综合模型，气泡从加热表面在恒定的表面温度的增长进行了研究。基于数值计算结果，量化了气泡尺寸的演变和接触线处的局部传热。数值模拟中预测的气泡形状与实验结果吻合较好，但气泡的脱离时间比实验结果长。通过考虑气泡内的传热，它表明，在加热壁附近的汽相过热的均匀梯度。此外，详细了解气泡动力学和局部现象影响核态沸腾过程中的传热进行了讨论。
This study presents a 2D numerical investigation of nucleate boiling by a comprehensive model which includes systematic methods for multiphase simulation, e.g., the smoothed evaporation model, modified Height Function algorithm and the micro-layer model. The numerical framework employed in the present study is based on the VOF interface capture method, which is improved by implementing external functions. The modified Height Function yields a more accurate interface normal vector than the Youngs method and also presents smaller spurious velocities. Moreover, the Height Function shows good convergence with mesh refinement. In order to validate the comprehensive model, the growth of a bubble from a heated surface at a constant surface temperature is investigated. Based on the numerical results, the evolution of bubble size and local heat transfer at the contact line are quantified. The bubble shapes predicted in the numerical investigation agree well with experimental results; however, the departure time is longer than the experimental result. By considering the heat transfer within the bubble, it is shown that the vapor phase in the vicinity of the heating wall is superheated with a homogeneous gradient. Moreover, a detailed insight into bubble dynamics and local phenomena affecting the heat transfer during nucleate boiling is discussed.
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DOI：
10.1115/ht-fed2004-56268
发表时间：
1998-04
期刊：
Volume!
影响因子：
--
作者：
G. Tryggvason;A. Esmaeeli
通讯作者：
G. Tryggvason;A. Esmaeeli
VOSET 方法对核沸腾的直接数值模拟
影响因子：
2
作者：
Ling, Kong;Li, Zeng-Yao;Tao, Wen-Quan
通讯作者：
Tao, Wen-Quan
影响因子：
2.2
作者：
Peter Stephan;J. Hammer
通讯作者：
Peter Stephan;J. Hammer
DOI：
10.1016/j.jcp.2005.08.004
发表时间：
2006-03
期刊：
J. Comput. Phys.
影响因子：
--
作者：
M. Francois;S. J. Cummins;E. Dendy;D. Kothe;J. Sicilian;M. W. Williams
通讯作者：
M. Francois;S. J. Cummins;E. Dendy;D. Kothe;J. Sicilian;M. W. Williams
影响因子：
--
作者：
Son, G;Ramanujapu, N;Dhir, VK
通讯作者：
Dhir, VK