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双液滴撞击平面液膜的流动与传热特性
引用本文:郭亚丽,魏兰,沈胜强,陈桂影.双液滴撞击平面液膜的流动与传热特性[J].物理学报,2014,63(9):94702-094702.
作者姓名:郭亚丽  魏兰  沈胜强  陈桂影
作者单位:大连理工大学能源与动力学院, 大连 116024
基金项目:国家自然科学基金(批准号:51376037)资助的课题~~
摘    要:采用耦合的水平集-体积分数法(CLSVOF)对双液滴连续撞击恒定壁温壁面上的热液膜的流动和换热特性进行了数值模拟及分析,得到了双液滴撞击热液膜后形态演变的过程.分析了液滴垂直间距、撞击速度、液膜厚度以及液滴直径对双液滴撞击液膜后的流动与传热特性的影响,结果显示,壁面平均热流密度随液滴撞击速度的增大而增大,液滴垂直间距、液膜厚度和液滴直径对平均热流密度的影响较小,但会对热流密度在撞击区域和交界区的分布产生重要影响.

关 键 词:液滴撞击  CLSVOF  液膜  传热
收稿时间:2013-11-11

The flow and heat transfer characteristics of double droplets impacting on flat liquid film
Guo Ya-Li,Wei Lan,Shen Sheng-Qiang,Chen Gui-Ying.The flow and heat transfer characteristics of double droplets impacting on flat liquid film[J].Acta Physica Sinica,2014,63(9):94702-094702.
Authors:Guo Ya-Li  Wei Lan  Shen Sheng-Qiang  Chen Gui-Ying
Abstract:A coupled level set and volume of fluid (CLS-VOF) method is applied to simulate the process of double droplets which continuously impact on a hot liquid film on a wall of constant temperature, and the evolution processes after the double droplets impinge on the hot flat liquid film are studied. Influences of vertical spacing between the two droplets, impact velocity, film thickness and droplet diameter on the flow and heat transfer characteristics are discussed. It is found that the average heat flux density of the wall increases with the rise of impact velocity. The influences of vertical spacing between the two droplets, droplet diameter, and liquid film thickness on the average heat flux density are small, but they have an important effect on the distribution of heat flow density in the impact area and the border area.
Keywords: drop impact CLSVOF liquid film heat transfer
Keywords:drop impact  CLSVOF  liquid film  heat transfer
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