基于挡板的劈裂复合室(B-SARC)微混合器的数值与实验研究

IF 1 Q4 ENGINEERING, CHEMICAL
Sanjay A. Pawar, Vimal Kumar Chouksey
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引用次数: 0

摘要

微流控技术在各个领域引起了越来越多的关注。微混合过程对微流控装置的效率和精度有显著影响。微混合器是微流体系统不可缺少的组成部分,它包括微通道,用于在有限的空间和有限的流动路径内混合流体。在这些部件中,微型混合器作为关键元件脱颖而出,其任务是在施加最小压降的同时实现最大的混合效率。本文对基于挡板的劈裂复合室(B-SARC)微混合器进行了数值和实验研究。利用COMSOL Multiphysics软件建立了无挡板的弯曲波浪型微混合器和带有方形、三角形和泪滴型三种挡板的基于挡板的劈裂复合室(B-SARC)微混合器模型。通过对混合指数和压降的研究,对混合性能进行了分析。由于雷诺数(Re)在0.1和90之间分布广泛,因此对宽高比为1,1.5和2的方形、三角形和泪滴状挡板形状对混合性能分析的影响进行了数值研究。制备了基于聚二甲基硅氧烷(PDMS)挡板的分离复合室(B-SARC)微混频器。并进行了实验分析。对压降和混合指数进行了实验分析。实验结果与计算结果吻合较好,验证了计算结果的正确性。结果揭示了在考虑的雷诺数范围内,低雷诺数下的扩散和高雷诺数下平流产生的导数流的作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Numerical and experimental study of the baffle-based split and recombine chamber (B-SARC) micromixers
Abstract Microfluidic technology has garnered growing interest in diverse domains. The efficacy and precision of microfluidic devices are significantly influenced by micromixing processes. Micromixers, comprising microchannels designed to blend fluids within a confined space and limited flow pathway, constitute indispensable components of microfluidic systems. Among these components, the micromixer stands out as a critical element, tasked with achieving maximal mixing efficiency while imposing minimal pressure drop. This paper focusses on the numerical and experimental study the baffle-based split and recombine chamber (B-SARC) micromixers. The models of a curved wavy micromixer (without baffle) and the baffle-based split and recombine chamber (B-SARC) micromixers with three baffles such as square, triangular and teardrop shaped baffles been developed using COMSOL Multiphysics software. The mixing performance analysis has been carried out by studying the mixing index and pressure drop. The influence of baffle shapes i.e. square, triangular and teardrop shaped baffles of aspect ratio 1, 1.5 and 2 on mixing performance analysis has been investigated numerically, for widespread assortment of Reynolds numbers (Re) lies between 0.1 and 90. The polydimethylsiloxane (PDMS) baffle-based split and recombine chamber (B-SARC) micromixers have been fabricated. Further, the experimental analysis has been carried out. The experimental analysis for pressure drop as well as mixing index has been performed. A good agreement has been observed between experimental and computational results which leads to validation of the computational results. The results revel the role of diffusion at lower Reynolds numbers and the production of derivative flows owing to advection at higher Reynolds numbers within the considered range of Re.
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来源期刊
Chemical Product and Process Modeling
Chemical Product and Process Modeling ENGINEERING, CHEMICAL-
CiteScore
2.10
自引率
11.10%
发文量
27
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.
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