聚焦微流控装置中流体混合流动的数值模拟

IF 1 Q4 ENGINEERING, CHEMICAL

Chemical Product and Process Modeling Pub Date : 2023-02-09 DOI:10.1515/cppm-2022-0023

Halimeh Aghaei, A. R. Solaimany Nazar

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引用次数: 0

摘要

摘要采用计算流体力学方法对进口通道合流角分别为45°、67.5°和90°的聚焦式微流控装置内的流体混合进行了数值模拟。考察了宽高比(0.5、1和1.5)、混合通道长度(1 ~ 4 mm)和雷诺数(1 ~ 20)等参数对混合效率和压降的影响。结果表明，混合效率的提高是由于各角度雷诺数和展弦比的增加。此外，由于雷诺数的增加和展弦比的减小，压降也会增加。混合通道长度越长，混合效率越高。从操作参数和几何参数的角度来看，由于进口通道交界处流动的接触面增加，混合指数范围在0.54 ~ 1之间，因此在45°角处的混合效率更合适。

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Numerical simulation of fluid flow mixing in flow-focusing microfluidic devices

Abstract A numerical simulation through computational fluid dynamics is presented on the fluid flow mixing in a flow-focusing microfluidic device with three inlet channels confluence angles of 45, 67.5, and 90°. The effect of various parameters such as aspect ratio (0.5, 1, and 1.5), mixing channel length (1–4 mm), and Reynolds number (1–20) on the mixing efficiency, and the pressure drop are evaluated. The results demonstrate that the increase in mixing efficiency results from an increase in the Reynolds number and aspect ratio for all the angles. In addition, an increase in the pressure drop due to an increase in the Reynolds number and a decrease in the aspect ratio is observed. A longer length of the mixing channel indicates a higher mixing efficiency. The mixing efficiency is more suitable at an angle of 45° among the applied angles in terms of the operational and geometric parameters due to an increase in the contact surface of the flows at the inlet channels junction since the mixing index range is between 0.54 and 1 by varying the mentioned parameters.

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来源期刊

Chemical Product and Process Modeling ENGINEERING, CHEMICAL-

CiteScore

2.10

自引率

11.10%

发文量

期刊介绍： Chemical Product and Process Modeling (CPPM) is a quarterly journal that publishes theoretical and applied research on product and process design modeling, simulation and optimization. Thanks to its international editorial board, the journal assembles the best papers from around the world on to cover the gap between product and process. The journal brings together chemical and process engineering researchers, practitioners, and software developers in a new forum for the international modeling and simulation community. Topics: equation oriented and modular simulation optimization technology for process and materials design, new modeling techniques shortcut modeling and design approaches performance of commercial and in-house simulation and optimization tools challenges faced in industrial product and process simulation and optimization computational fluid dynamics environmental process, food and pharmaceutical modeling topics drawn from the substantial areas of overlap between modeling and mathematics applied to chemical products and processes.