针对蒸发弯月面附近微颗粒运动的数值模拟

潘振海; 王昊

doi:10.3879/j.issn.1000-0887.2014.03.012

针对蒸发弯月面附近微颗粒运动的数值模拟

doi: 10.3879/j.issn.1000-0887.2014.03.012

潘振海,
王昊

北京大学工学院微纳米热质传递与能源效率实验室, 北京 100871

基金项目: 国家自然科学基金(51276003)

详细信息

作者简介:
潘振海（1985—），男，山东烟台人，博士(E-mail: panzhhpku@163.com)

中图分类号: O368
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- 被引次数: 0
出版历程
- 收稿日期: 2013-10-10
- 修回日期: 2013-12-30
- 刊出日期: 2014-03-15

Modeling of Micro-Particle’s Motion Near an Evaporating Meniscus

Laboratory of Heat and Mass Transport at MicroNano Scale, College of Engineering, Peking University, Beijing 100871, P.R.China

Funds: The National Natural Science Foundation of China(51276003)

摘要

摘要: 蒸发弯月面附近存在复杂的流动结构．该文建立数值模型以精确模拟蒸发弯月面附近的传热传质过程并描绘液体中微小颗粒的运动轨迹．一方面，将弯月面上的蒸发、气相中的蒸汽扩散以及蒸发导致的界面冷却效果耦合求解．同时利用离散元方法（DEM）对颗粒在流体中的运动及其对流场的反作用进行耦合求解．通过与实验对比，该计算方法能够准确地描述弯月面附近的微颗粒运动轨迹.
- 蒸发 /
- 弯月面 /
- 热毛细流 /
- 微颗粒 /
- 微流控
Abstract: The transport process and flow structure near an evaporating meniscus are highly complicated due to various coupling factors. A numerical model was developed to describe the physical process and motion of a micro-particle near an evaporating meniscus. The evaporation and its cooling effect on the interface, vapor diffusion in the gas domain, as well as thermocapillary flow were considered together with computational fluid dynamics (CFD). At the same time, the particle’s motion was tracked with discrete element method (DEM). The interaction between the micro flow field and the particle, including drag force and buoyancy force, was considered. The simulation results agree well with the experiments in previous published literatures.
- evaporation /
- meniscus /
- thermocapillary flow /
- micro-particle /
- microfluidics

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参考文献(16)

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