Enhancing the Design of Microdevices: The Role of Computational Fluid Dynamics and Experimental Investigation

被引：0

作者：

Pirouz, Behrouz ^{[1
]}

Nejad, Hana Javadi ^{[1
]}

Chirillo, Anna Selene ^{[2
]}

Naghib, Seyed Navid ^{[1
]}

Piro, Patrizia ^{[1
]}

机构：

[1] Univ Calabria, Dept Civil Engn, I-87036 Arcavacata Di Rende, Italy

[2] ASP Cosenza, I-87100 Cosenza, Italy

来源：

MICROMACHINES | 2025年 / 16卷 / 03期

关键词：

microfluid; medical sensors; microdevices; capillary flow; CFD; LATTICE BOLTZMANN METHOD; NUMERICAL-SIMULATION; MULTIPHASE FLOW; MICROFLUIDICS;

D O I：

10.3390/mi16030316

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The growing use of microfluidic-based devices necessitates an analysis of flow characteristics through both experimental methods and computational fluid dynamic (CFD) simulations. CFD simulations facilitate the investigation of various devices, including medical sensors, by providing detailed insights into flow behavior. In this study, we conducted experimental and CFD analysis of the microfluidic flow in three devices: a COVID-19 rapid test kit, a blood glucose kit, and a PDMS kit. Our findings revealed that the changes in wall adhesion (contact angles) during the capillary flow could cause significant deviation from theoretical flow speed predictions. A hemodynamic analysis of the blood glucose kit and PDMS kit showed that capillary filling decreased in length, and flow speed could depend on the microchannel diameter. CFD results indicated the prominent role of porosity in the simulation of porous media material such as the COVID-19 test kit, as well as surface tension coefficients and wall adhesion (contact angles) in blood glucose kits and PDMS kits. Therefore, considering adaptive dynamic contact angles in CFD simulation software such as Ansys-Fluent 2024 could result in a more accurate prediction than simplified theoretical techniques, which is useful for sensor optimization and development.

引用

页数：17

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