周云龙,常赫

• 1:东北电力大学 能源与动力工程学院，吉林 吉林 132012

摘要(Abstract)：

采用CLSVOF（coupled level set and volume of fluid）方法，以空气和水为介质对矩形截面蛇形微通道内弹状流流动传热进行模拟研究。改变气液相流速，探讨了沿程局部Nu数的变化情况；改变接触角及相对粗糙度，分析其对微通道传热的影响；比较不同形貌粗糙元对微通道传热特性的影响；最后，基于Design-Expert平台，对蛇形微通道进行了优化设计。计算结果表明，与单相流动相比，弹状流可以强化传热，且局部Nu数随气弹的出现呈周期性变化；无滑移壁面条件下，疏水壁面一定程度上阻碍传热；粗糙壁面微通道可强化换热，且合理布置的随机粗糙元传热效果最好。

关键词(KeyWords)： 壁面性质;微通道;气液两相流;传热

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 周云龙,常赫

DOI: 10.3969/j.issn.1003-9015.2018.06.005

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