An analytical model for plug flow in microcapillaries with circular cross section

被引：19

作者：

Che, Zhizhao ^{[1
]}

Wong, Teck Neng ^{[1
]}

Nam-Trung Nguyen ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

来源：

INTERNATIONAL JOURNAL OF HEAT AND FLUID FLOW | 2011年 / 32卷 / 05期

关键词：

Plug; Vortex; Flow resistance; Multiphase flow; Droplet-based microfluidics; Mathematical modeling; SLUG FLOW; CHEMICAL-REACTION; SEGMENTED FLOW; PRESSURE-DROP; LIQUID SLUGS; TAYLOR FLOW; HYDRODYNAMICS; SIMULATION; FLUID;

D O I：

10.1016/j.ijheatfluidflow.2011.06.009

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Plug flow in microcapillaries or microchannels offers significant advantages for the development of microfluidic applications and recently triggers many interests and studies. Recirculation is formed within liquid plugs due to the presence of interfaces. This paper presents an analytical model to investigate the recirculation flow and the flow resistance in microcapillaries with circular cross section. A fourth order partial differential equation is used to model the Stokes flow within the liquid plug. The results of the flow field show that the flow pattern is affected by the plug length. The flow resistance is determined through the force balance of the liquid plug. The comparison of the flow field and the flow resistance from the analytical model and the experiments shows good agreement. (C) 2011 Elsevier Inc. All rights reserved.

引用

页码：1005 / 1013

页数：9

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