Taylor droplet breakup in T-type microchannels: A detailed flow analysis

Results in Engineering, Год журнала: 2024, Номер 23, С. 102513 - 102513

Опубликована: Июль 10, 2024

The study of droplet break-up in microchannels can be used to improve designs for both biological or chemical microreactors and microfluidic devices e.g., heat exchangers microchips. In this study, 3D computer simulations were carried out investigate the detailed behavior breakup a T-junction microchannel using Volume Fluid (VOF) Level Set (LS) coupling methods (S-CLSVOF) implemented OpenFoam. evolution morphology rupture regimens analyzed considering pressure results, velocity neck thickness, tunnel width. results show four regimes range capillary numbers dimensionless initial length 0.005≤Ca≤0.055 1≤l0/w≤5. stages each also compared with experimental numerical from literature. A description step is given, including analyses influence that local field Laplace have on processes. reveal decreases main channel due continuous flux at top bottom channel. This turn, leads slight change rear curvature bubble. an important parameter predict opening point, large changes curvature, whether will not. Just before breakup, captured backflow near neck, region, characterized by drops, thus smaller times.

Язык: Английский

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Modal Parameters Estimation of Circular Plates Manufactured by FDM Technique Using Vibrometry: A Comparative Study

Applied Sciences, Год журнала: 2024, Номер 14(22), С. 10609 - 10609

Опубликована: Ноя. 18, 2024

This paper presents a comparative study focused on modal parameters estimation of specimens manufactured by the FDM technique using fixed embedded vibrometer based laser Doppler principle and roving hammer-impact method. Part this is devoted to testing circular plate with honeycomb infill pattern while varying number excitation points (DOFs), analysis lines fast Fourier transformation (FFT), locations or numbers reference degrees freedom (REFs). Although these did not significantly affect values found for natural frequencies structure, there were changes in estimates mode shapes (affected low DOFs), height sharpness peaks CMIF functions (caused increased FFT lines), identified modes (influenced chosen location(s) REFs), respectively. Subsequently, authors compared results experimental analyses carried out under same conditions three plates honeycomb, star, concentric patterns made PLA. The confirm that star have higher stiffness than those patterns. damping ratios obtained each structure indicate strong response at near their frequencies.

Язык: Английский

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Toward Sustainable 3D-Printed Sensor: Green Fabrication of CNT-Enhanced PLA Nanocomposite via Solution Casting

Materials, Год журнала: 2024, Номер 17(23), С. 5782 - 5782

Опубликована: Ноя. 25, 2024

The current study explores, for the first time, an eco-friendly solution casting method using a green solvent, ethyl acetate, to prepare feedstock/filaments from polylactic acid (PLA) biopolymer reinforced with carbon nanotubes (CNTs), followed by 3D printing and surface activation biosensing applications. Comprehensive measurements of thermal, electrical, rheological, microstructural, mechanical properties developed feedstock 3D-printed parts were performed analyzed. Herein, adding 2 wt.% CNTs PLA matrix marked electrical percolation, achieving conductivity 8.3 × 10

Язык: Английский

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3D-printed Low-cost Electroanalytical Diagnostic Platforms: Basics, Materials, Fabrication, and Applications

Royal Society of Chemistry eBooks, Год журнала: 2024, Номер unknown, С. 233 - 261

Опубликована: Дек. 11, 2024

Recently, 3D-printing technology has emerged as an unconventional, cost-effective, and user-friendly method for prototyping, developing, fabricating objects, which can be directly used scientific applications, well developing prototypes final products. The increasing number of applications includes energy storage devices, biomedical equipment, analytical platforms, low-cost diagnostic devices. Notable examples 3D-printed objects electroanalytical diagnostics include electrochemical cells, electrodes, microfluidic In this chapter, we will focus on the basic aspects technology, materials their development performance.

Язык: Английский

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A Decade of Advancement in Nanomaterials-Based Electrochemical Sensors: A Comprehensive Review

Russian Journal of Electrochemistry, Год журнала: 2024, Номер 60(12), С. 1175 - 1197

Опубликована: Дек. 1, 2024

Язык: Английский

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