中文摘要：

最近，我们的研究组建议了阶段分离 condenser 试管，网孔柱体在被插入在试管核心在试管墙和液体附近形成气体的流动结构，显著地提高冷凝作用热转移。但是向核心区域的水泡漏可以变得更坏热转移改进。以便阻止水泡漏，批评标准基于 YoungLaplace 方程被建议就惯性力量而言，粘滞力量和搏动的流动。批评标准取决于无尺寸的参数 G，这被发现 < 啜 class= “ a-plus-plus ” >*, 我们数字和系数 C。数字模型以液体方法的体积被开发在阶段分离 condenser 试管预言二阶段的 laminar 流动。结果证明水泡漏发生在水泡尖端，它被适合于试验性的观察。区分 non-bubble-breaking 的批评曲线并且打破水泡被在不同 G 比较水泡动力学获得 * 并且我们。系数 C 是坚定的。为水泡漏的批评标准作为\被给( G ^{*} \times 我们= \left ({ 0.22We ^{ 0.99349 }- \frac {{ G ^{*}}}{{ 4.7 \times 10 ^{ 3 } \times 我们^{ 0.00651 }}}+ \frac { 196.39 }{{我们^{ 0.00651 }}}} \right ) \times \frac {{ 4 { \cos } \alpha }}{ \Delta \varTheta W }\)，为阶段分离 condenser 试管提供设计和操作指导。

英文摘要：

Recently, our research group proposed the phase separation condenser tube, in which a mesh cylinder was inserted to form the flow structure of ＂gas near the tube wall and liquid in the tube core＂, significantly enhance the condensation heat transfer. But the bubble leakage towards the core region may worsen the heat transfer enhancement. In order to prevent the bubble leakage, the critical criterion was proposed based on the Young-Laplace equation, considering the inertia force, viscous force and pulsating flow. It was found that the critical criterion depends on the dimensionless parameter G＊, the We number and a coefficient C. The numerical model was developed in terms of the volume of fluid method to predict the two-phase laminar flow in the phase separation condenser tube. The results show that the bubble leakage takes place at the bubble tip, which is agreed with the experimental observations; The critical curve distinguishing the non-bubble-breaking and bubble-breaking was obtained by comparing the bubble dynamics at different G＊ and We. The coefficient C was determined. The critical criterion for the bubble leakage is given as G＊×We=（0.22We0.99349-G＊/4.7×10^3×We0.00651＋196.39/We0.00651）×4cosz/△⊙W, providing the design and operation guidance for the phase separation condenser tube.