王佳男,王嘉骏,冯连芳,顾雪萍

• 1:化学工程联合国家重点实验室(浙江大学)
• 2:浙江大学化学工程与生物工程学系

摘要(Abstract)：

微混合器内采用多相流操作条件使混合在液滴中进行,能有效提高微混合器的混合效率以及消除单相流操作条件下所存在的分散效应。在流体体积函数法(VOF)的计算流体力学基础上,分别采用欧拉-示踪剂法以及拉格朗日-示踪粒子法对弯曲微通道中液滴内部的混合状态演变过程进行模拟研究,得到了液滴经过通道不同位置其内部的混合快照图并计算了其混合程度的变化。两种方法都显示在液滴通过蛇形弯曲微混合器时,液滴内部产生了混沌流。正是由于混沌混合现象的存在,使得液滴内混合组分能够达到快速有效地混合,混合效率较高。对两种不同模拟方法及实验结果的比较发现,欧拉-示踪剂法能够更好地模拟实际的混合效果,而拉格朗日-示踪粒子法能够更清晰地模拟混合组分界面的变化情况,适用于研究液滴内混沌混合现象。

关键词(KeyWords)： 微混合器;混沌混合;计算流体动力学;流体体积函数法(VOF);欧拉-示踪剂法;拉格朗日-示踪粒子法

Abstract:

Keywords:

基金项目(Foundation): 化学工程联合国家重点实验室开放课题资助(SKL-ChE-11D01)

作者(Author): 王佳男,王嘉骏,冯连芳,顾雪萍

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