革命性的等离子体分离:尖端的设计,模拟和优化技术在微流体使用COMSOL

IF 2.3 4区 工程技术 Q2 INSTRUMENTS & INSTRUMENTATION Microfluidics and Nanofluidics Pub Date : 2023-09-20 DOI:10.1007/s10404-023-02684-x
Ashok Kumar Loganathan, Ramya Devaraj, Lalithambigai Krishnamoorthy
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引用次数: 0

摘要

血浆用于90%以上的血液诊断测试,用于从全血中分离血浆的微流体设备可用于多个临床实验室和护理点诊断。为了分离血浆,本研究开发了一种微流体通道的结构设计。使用COMSOL Multiphysics™中的Euler-Euler层流模型对微通道中的血液流动行为进行了建模。不同设计的带有分离微通道的微芯片被制造出来并进行了研究。研究了微通道对等离子体分离的几何影响。仿真结果表明,通道模型在低流速下对细胞的位移和分离作用不大,在血液分离的情况下成为一个困难的模型,因为它涉及到复杂的流体-颗粒相互作用,如水动力、颗粒-壁面相互作用和颗粒-颗粒相互作用。对三分岔和分岔时主通道和侧通道夹角的研究,不同的分离器形状,如三角形、正方形和蛇形,重点研究了出口分岔时蛇形分离器的宽度,表明细胞自由层的流动方向会发生突然变化,以获得更多纯度更高的等离子体。通过改变出口分岔角度,线性增大蛇形管直径,提出了一种多通道优化设计方案,并对其进行了评价。
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Revolutionizing plasma separation: cutting-edge design, simulation, and optimization techniques in microfluidics using COMSOL

Blood plasma is used in more than 90% of blood diagnosis tests, microfluidics devices for separating plasma from whole blood can be utilised to multiple clinical laboratory and point-of-care diagnostics. To separate blood plasma, this research developed a structural design for microfluidic channels. The blood flow behaviour in microchannels has been modelled using the Euler–Euler Laminar Flow Model in COMSOL Multiphysics™. Differently designed microchips with segregating microchannels were created and subjected to investigation. Investigations were done on the geometrical impact of microchannels on plasma separation. Simulation results show that channel model contributes little in displacement or isolating the cells in low flow rate and become a difficult model in the case of blood separation, because it involves capturing the intricate fluid–particle interactions, such as hydrodynamic forces, particle–wall interactions, and particle–particle interactions. Studies on the angle between the main channel and side channels in trifurcation as well as bifurcation, different separator shapes, such as triangular, square, and serpentine, with a focus on the serpentine separator width with outlet bifurcation, show that there is a sudden change in flow direction of the cell free layer to obtain more plasma with a higher purity. By altering the angle of the outlet bifurcation and linearly increasing the diameter of the serpentine, an optimum design with many channels has been presented and evaluated.

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来源期刊
Microfluidics and Nanofluidics
Microfluidics and Nanofluidics 工程技术-纳米科技
CiteScore
4.80
自引率
3.60%
发文量
97
审稿时长
2 months
期刊介绍: Microfluidics and Nanofluidics is an international peer-reviewed journal that aims to publish papers in all aspects of microfluidics, nanofluidics and lab-on-a-chip science and technology. The objectives of the journal are to (1) provide an overview of the current state of the research and development in microfluidics, nanofluidics and lab-on-a-chip devices, (2) improve the fundamental understanding of microfluidic and nanofluidic phenomena, and (3) discuss applications of microfluidics, nanofluidics and lab-on-a-chip devices. Topics covered in this journal include: 1.000 Fundamental principles of micro- and nanoscale phenomena like, flow, mass transport and reactions 3.000 Theoretical models and numerical simulation with experimental and/or analytical proof 4.000 Novel measurement & characterization technologies 5.000 Devices (actuators and sensors) 6.000 New unit-operations for dedicated microfluidic platforms 7.000 Lab-on-a-Chip applications 8.000 Microfabrication technologies and materials Please note, Microfluidics and Nanofluidics does not publish manuscripts studying pure microscale heat transfer since there are many journals that cover this field of research (Journal of Heat Transfer, Journal of Heat and Mass Transfer, Journal of Heat and Fluid Flow, etc.).
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