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290 Results Found

  • Article
  • Open Access
65 Citations
3,893 Views
10 Pages

Gelatine methacryloyl (GM) shows high biocompatibility and is extensively used in tissue engineering; however, few works have explored the use of GM in bioactive agent delivery. This study adopts a microfluidic approach involving the use of flow-focu...

  • Article
  • Open Access
3 Citations
3,054 Views
14 Pages

Effect of Intersection Angle of Input Channels in Droplet Generators

  • Gi-Beum Kim,
  • Young-Ran Park,
  • Seong-Jong Kim and
  • Kwang-Hyun Park

In this paper, we studied the effects of the intersection angle between the inlet channels on the droplet diameter using a COMSOL Multiphysics® simulation. We employed the level-set method to study the droplet generation process inside a microfluidic...

  • Feature Paper
  • Article
  • Open Access
18 Citations
4,374 Views
14 Pages

2 September 2019

Cell microencapsulation is a promising technique to protect living cells in biomedical applications. Microfluidic devices can be utilized to control the production of high-throughput cell-laden droplets. This paper demonstrates the effects of flow-fo...

  • Communication
  • Open Access
50 Citations
16,980 Views
12 Pages

Monodisperse Water-in-Oil-in-Water (W/O/W) Double Emulsion Droplets as Uniform Compartments for High-Throughput Analysis via Flow Cytometry

  • Jing Yan,
  • Wolfgang-Andreas C. Bauer,
  • Martin Fischlechner,
  • Florian Hollfelder,
  • Clemens F. Kaminski and
  • Wilhelm T. S. Huck

3 December 2013

Here we report the application of monodisperse double emulsion droplets, produced in a single step within partially hydrophilic/partially hydrophobic microfluidic devices, as defined containers for quantitative flow cytometric analysis. Samples with...

  • Article
  • Open Access
7 Citations
3,021 Views
13 Pages

3 May 2022

In this study, inertial focusing phenomenon was investigated, which can be used as a passive method for sample preparation and target manipulation in case of particulate suspensions. Asymmetric channel geometry was designed to apply additional inerti...

  • Article
  • Open Access
5 Citations
2,997 Views
11 Pages

28 June 2021

The purpose of this work is to determine, based on the computational model, whether a mixture of a binary liquid is capable of producing longer, thinner and faster gas-focused micro-jets, compared to the mono-constituent liquids of its components. Mi...

  • Article
  • Open Access
5 Citations
4,113 Views
8 Pages

25 November 2019

In a flow-focusing microdroplet generator, by changing the flow rates of the two immiscible fluids, production speed can be increased from tens to thousands of droplets per second. However, because of the nonlinearity of the flow-focusing microdrople...

  • Article
  • Open Access
17 Citations
6,230 Views
9 Pages

Fabrication of Glass Microchannel via Glass Imprinting using a Vitreous Carbon Stamp for Flow Focusing Droplet Generator

  • Hyungjun Jang,
  • Muhammad Refatul Haq,
  • Youngkyu Kim,
  • Jun Kim,
  • Pyoung-hwa Oh,
  • Jonghyun Ju,
  • Seok-Min Kim and
  • Jiseok Lim

29 December 2017

This study reports a cost-effective method of replicating glass microfluidic chips using a vitreous carbon (VC) stamp. A glass replica with the required microfluidic microstructures was synthesized without etching. The replication method uses a VC st...

  • Feature Paper
  • Article
  • Open Access
11 Citations
3,760 Views
12 Pages

Interfacial Tension Sensor for Low Dosage Surfactant Detection

  • Piotr Pawliszak,
  • Bronwyn H. Bradshaw-Hajek,
  • Christopher Greet,
  • William Skinner,
  • David A. Beattie and
  • Marta Krasowska

Currently there are no available methods for in-line measurement of gas-liquid interfacial tension during the flotation process. Microfluidic devices have the potential to be deployed in such settings to allow for a rapid in-line determination of the...

  • Article
  • Open Access
5 Citations
4,316 Views
13 Pages

18 February 2019

In this paper we present a novel microfluidic approach for continuous, rapid and switchable particle concentration, using induced-charge electroosmosis (ICEO) in 3D electrode layouts. Field-effect control on non-linear electroosmosis in the transvers...

  • Article
  • Open Access
7 Citations
4,212 Views
11 Pages

29 December 2020

Janus droplets can function as excellent templates for fabricating physically and chemically anisotropic particles. Here, we report new surfactant-laden Janus droplets with curvature controllability and enhanced stability against coalescence, suitabl...

  • Article
  • Open Access
3 Citations
2,951 Views
12 Pages

Microfluidics: A Novel Approach for Dehydration Protein Droplets

  • Van Nhat Pham,
  • Dimitri Radajewski,
  • Isaac Rodríguez-Ruiz and
  • Sebastien Teychene

16 November 2021

The equation of state of colloids plays an important role in the modelling and comprehension of industrial processes, defining the working conditions of processes such as drying, filtration, and mixing. The determination of the equation is based on t...

  • Article
  • Open Access
33 Citations
8,662 Views
11 Pages

Modeling of Droplet Generation in a Microfluidic Flow-Focusing Junction for Droplet Size Control

  • Ali M. Ibrahim,
  • Jose I. Padovani,
  • Roger T. Howe and
  • Yasser H. Anis

In this paper, we study the parameters that affect the generation of droplets in a microfluidic flow-focusing junction. Droplets are evaluated based on the size and frequency of generation. Droplet size control is essential for microfluidic lab-on-a-...

  • Review
  • Open Access
9 Citations
7,599 Views
40 Pages

Droplet Generation and Manipulation in Microfluidics: A Comprehensive Overview of Passive and Active Strategies

  • Andrea Fergola,
  • Alberto Ballesio,
  • Francesca Frascella,
  • Lucia Napione,
  • Matteo Cocuzza and
  • Simone Luigi Marasso

29 May 2025

Droplet-based microfluidics (DBM) has emerged as a powerful tool for a wide range of biochemical applications, from single-cell analysis and drug screening to diagnostics and tissue engineering. This review provides a comprehensive overview of the la...

  • Article
  • Open Access
9 Citations
3,219 Views
15 Pages

Integration of a Dielectrophoretic Tapered Aluminum Microelectrode Array with a Flow Focusing Technique

  • Naqib Fuad Abd Rashid,
  • Revathy Deivasigamani,
  • M. F. Mohd Razip Wee,
  • Azrul Azlan Hamzah and
  • Muhamad Ramdzan Buyong

21 July 2021

We present the integration of a flow focusing microfluidic device in a dielectrophoretic application that based on a tapered aluminum microelectrode array (TAMA). The characterization and optimization method of microfluidic geometry performs the hydr...

  • Article
  • Open Access
5 Citations
6,311 Views
9 Pages

Controlling Shapes in a Coaxial Flow Focusing Microfluidic Device: Experiments and Theory

  • Romen Rodriguez-Trujillo,
  • Yu-Han Kim-Im and
  • Aurora Hernandez-Machado

13 January 2020

A coaxial flow focusing PDMS (polydimethylsiloxane) microfluidic device has been designed and manufactured by soft lithography in order to experimentally study a miscible inner flow. We studied a coaxially focused inner flow (formed by an aqueous flu...

  • Article
  • Open Access
1 Citations
1,310 Views
16 Pages

15 April 2024

In the high-temperature mainstream of gas turbines, there is a rim clearance between the rotor and the stator. A rim seal is to prevent the intrusion of high-temperature gas by spraying cool fluid from the inside of the rim clearance to the outside....

  • Article
  • Open Access
1 Citations
1,482 Views
24 Pages

Experimental Study on the Flow Characteristics of Two-Stage Variable Turbines in a Twin-VGT System

  • Qikai Peng,
  • Zhongjie Zhang,
  • Guangmeng Zhou,
  • Surong Dong,
  • Xumin Zhao,
  • Han Zhang,
  • Ruilin Liu and
  • Jun Cai

1 December 2023

The twin variable geometry turbocharger (VGT) System, through efficient use of exhaust energy, maximizes internal combustion engine (ICE) power, reduces exhaust emissions and improves reliability. However, the internal flow characteristics of the twi...

  • Article
  • Open Access
3 Citations
1,553 Views
13 Pages

The Impact of GaN Crystal Growth on Ammonia Flow Dynamics in Ammonothermal Processes

  • Marek Zak,
  • Pawel Kempisty,
  • Boleslaw Lucznik,
  • Robert Kucharski and
  • Michal Bockowski

11 March 2025

A computational fluid dynamics simulation was developed for the growth zone of gallium nitride crystallized using the alkaline ammonothermal method, considering the geometry of the seed crystals and the installation setup. The model focuses on temper...

  • Article
  • Open Access
1,982 Views
34 Pages

24 September 2020

To comprehensively understand the effectiveness of external factors on flow characteristics and realize particle flow distribution evenly in bulk layers is an essential prerequisite for improving the performance of heat transfer in vertical sinter co...

  • Article
  • Open Access
1,114 Views
25 Pages

8 September 2025

The optimization of polymer extrusion processes is crucial for improving product quality and manufacturing efficiency in plastic industries. This study aims to investigate the viscoelastic flow behavior of high-density polyethylene (HDPE) through an...

  • Article
  • Open Access
10 Citations
4,306 Views
10 Pages

Shock Waves Asymmetry in a Symmetric Nozzle

  • Janusz Telega,
  • Ryszard Szwaba and
  • Piotr Doerffer

4 December 2019

The results of the experimental research on the symmetry of supersonic flow in a symmetric convergent-divergent nozzle are presented. The investigations were focused on the fact that for some flow conditions the flow in a precisely symmetric nozzle b...

  • Article
  • Open Access
18 Citations
3,841 Views
14 Pages

Analysis of Tool Geometry for the Stamping Process of Large-Size Car Body Components Using a 3D Optical Measurement System

  • Artur Rękas,
  • Tomasz Kaczmarek,
  • Michał Wieczorowski,
  • Bartosz Gapiński,
  • Michał Jakubowicz,
  • Karol Grochalski,
  • Dawid Kucharski and
  • Lidia Marciniak-Podsadna

10 December 2021

The paper presents a method for checking the geometry of stamped car body parts using a 3D optical measurement system. The analysis focuses on the first forming operation due to the deformation and material flow associated with stall thresholds. An e...

  • Communication
  • Open Access
4 Citations
3,287 Views
12 Pages

19 April 2019

The development of new compliant resonant microsystems and the trend towards further miniaturization have recently raised the issue of the accuracy and reliability of computational tools for the estimation of fluid damping. Focusing on electrostatica...

  • Article
  • Open Access
7 Citations
6,220 Views
16 Pages

Microparticle Inertial Focusing in an Asymmetric Curved Microchannel

  • Arzu Özbey,
  • Mehrdad Karimzadehkhouei,
  • Hossein Alijani and
  • Ali Koşar

9 August 2018

Inertial Microfluidics offer a high throughput, label-free, easy to design, and cost-effective solutions, and are a promising technique based on hydrodynamic forces (passive techniques) instead of external ones, which can be employed in the lab-on-a-...

  • Article
  • Open Access
1,138 Views
20 Pages

Rarefied Reactive Gas Flows over Simple and Complex Geometries Using an Open-Source DSMC Solver

  • Rodrigo Cassineli Palharini,
  • João Luiz F. Azevedo and
  • Diego Vera Sepúlveda

During atmospheric reentry, a significant number of chemical reactions are produced inside the high-temperature shock wave formed upstream of the spacecraft. Chemical reactions can significantly alter the flowfield structure surrounding the vehicle a...

  • Article
  • Open Access
22 Citations
6,150 Views
13 Pages

Geometric Characteristics of Spur Dike Scour under Clear-Water Scour Conditions

  • Li Zhang,
  • Pengtao Wang,
  • Wenhai Yang,
  • Weiguang Zuo,
  • Xinhong Gu and
  • Xiaoxiao Yang

24 May 2018

Factors such as flow and sediment characteristics affecting the spur dike’s local depth of erosion have yielded considerable research results, but there is little discussion of the geometry of the spur dike’s local scour holes. This study...

  • Article
  • Open Access
1 Citations
3,274 Views
16 Pages

Impeller Design and Performance Analysis of Aviation Fuel Pump Based on the Inverse Method

  • Chenguang Ping,
  • Jinguang Yang,
  • Michele Ferlauto and
  • Yang Zhao

30 April 2023

Centrifugal pumps have a wide range of applications in the aviation field. The present work focuses on the optimal design of aviation fuel pump impellers by means of an inverse method. The fuel pump impeller is designed here by solving an inverse pro...

  • Article
  • Open Access
10 Citations
5,336 Views
15 Pages

Numerical Investigation of Nozzle Jet Flow in a Pelton Microturbine

  • Dorian Nedelcu,
  • Vasile Cojocaru and
  • Raoul-Cristian Avasiloaie

8 August 2021

The characterization of flow through Pelton hydro turbines allows the optimization of their operation and maximization of energy performance. The flow in the injector of Pelton turbines and in the free jet area (the area from the injector outlet surf...

  • Article
  • Open Access
3 Citations
4,871 Views
16 Pages

Subject-Specific Computational Fluid-Structure Interaction Modeling of Rabbit Vocal Fold Vibration

  • Amit Avhad,
  • Zheng Li,
  • Azure Wilson,
  • Lea Sayce,
  • Siyuan Chang,
  • Bernard Rousseau and
  • Haoxiang Luo

6 March 2022

A full three-dimensional (3D) fluid-structure interaction (FSI) study of subject-specific vocal fold vibration is carried out based on the previously reconstructed vocal fold models of rabbit larynges. Our primary focuses are the vibration characteri...

  • Article
  • Open Access
17 Citations
4,850 Views
19 Pages

25 March 2021

Flow measurements that utilize differential pressure meters are commonly applied in industry. In such conditions, gas flow is often accompanied by liquid condensation. For this reason, errors occur in the metering process that can be attributed to th...

  • Communication
  • Open Access
18 Citations
6,261 Views
9 Pages

High-Throughput Production of Micrometer Sized Double Emulsions and Microgel Capsules in Parallelized 3D Printed Microfluidic Devices

  • Alexander Jans,
  • Jonas Lölsberg,
  • Abdolrahman Omidinia-Anarkoli,
  • Robin Viermann,
  • Martin Möller,
  • Laura De Laporte,
  • Matthias Wessling and
  • Alexander J. C. Kuehne

15 November 2019

Double emulsions are useful geometries as templates for core-shell particles, hollow sphere capsules, and for the production of biomedical delivery vehicles. In microfluidics, two approaches are currently being pursued for the preparation of microflu...

  • Article
  • Open Access
2,358 Views
16 Pages

The geometry of a compressor leading edge has an important effect on the aerodynamic performance at an off-designed incidence angle. The current geometric design methods of the leading edge are usually developed based on the flow characteristics at t...

  • Article
  • Open Access
1 Citations
1,600 Views
24 Pages

31 July 2024

The accurate measurement of mass flow rates is important in nuclear power plants. Flow meters have been invented and widely applied in several industries; however, the operating environment in advanced nuclear power plants is especially harsh due to...

  • Article
  • Open Access
13 Citations
2,735 Views
17 Pages

Longitudinal DC Discharge in a Supersonic Flow: Numerical Simulation and Experiment

  • Alexander Firsov,
  • Valentin Bityurin,
  • Dmitriy Tarasov,
  • Anastasia Dobrovolskaya,
  • Roman Troshkin and
  • Aleksey Bocharov

24 September 2022

This work focuses on detailed descriptions of DC discharge properties in supersonic airflow and its applicability in combustion simulations. Due to the complexity of obtaining most of the data in the experiment, our experimental research was suppleme...

  • Article
  • Open Access
1 Citations
1,340 Views
27 Pages

Comparative Study of RANS Models for Simulating Turbulent Flow and Heat Transfer in Corrugated Pipes

  • Ting-Ting Tang,
  • Fang-Qiu Li,
  • Guang-Yao Wang,
  • Jun Yan and
  • Zhao-Kuan Lu

8 September 2025

Corrugated pipes are extensively used in engineering applications that require flexibility and enhanced heat exchange, such as drainage and compact heat exchangers, and recently as inner layers in cryogenic flexible hoses for offshore liquid ship-to-...

  • Article
  • Open Access
256 Views
23 Pages

Quantifying Swirl Number Effects on Recirculation Zones and Vortex Dynamics in a Dual-Swirl Combustor

  • Hafiz Ali Haider Sehole,
  • Ghazanfar Mehdi,
  • Rizwan Riaz,
  • Absaar Ul Jabbar,
  • Adnan Maqsood and
  • Maria Grazia De Giorgi

16 December 2025

Swirl-stabilized combustors are central to gas turbine technology, where the swirl number critically determines flow structure and combustion stability. This work systematically investigates the isothermal flow in a dual-swirl combustor, focusing on...

  • Article
  • Open Access
4 Citations
3,192 Views
11 Pages

Effect of Gaskets Geometry on the Performance of a Reverse Electrodialysis Cell

  • Elier Sandoval-Sánchez,
  • Ziomara De la Cruz-Barragán,
  • Margarita Miranda-Hernández and
  • Edgar Mendoza

5 May 2022

Salinity gradient energy (SGE) allows the difference in salt concentration in two volumes of water to be harnessed and transformed into clean energy. The most advanced SGE technology is reverse electrodialysis (RED) cells. Recent studies have focused...

  • Review
  • Open Access
32 Citations
6,585 Views
45 Pages

14 December 2022

With the application of microdevices in the building engineering, aerospace industry, electronic devices, nuclear energy, and so on, the dissipation of high heat flux has become an urgent problem to be solved. Microchannel heat sinks have become an e...

  • Article
  • Open Access
65 Citations
2,940 Views
18 Pages

Investigation of Thermal Performance of Ternary Hybrid Nanofluid Flow in a Permeable Inclined Cylinder/Plate

  • Javali Kotresh Madhukesh,
  • Ioannis E. Sarris,
  • Ballajja Chandrappa Prasannakumara and
  • Amal Abdulrahman

10 March 2023

This article comprehensively investigates the thermal performance of a ternary hybrid nanofluid flowing in a permeable inclined cylinder/plate system. The study focuses on the effects of key constraints such as the inclined geometry, permeable medium...

  • Article
  • Open Access
1 Citations
1,610 Views
24 Pages

CFD-Based Optimization of an Axial Impulse Turbine for a Twin-Turbine Topology of an OWC Wave Energy Converter

  • Hosam M.Abdulhasieb,
  • Aitor Vega-Valladares,
  • Manuel García-Díaz,
  • Bruno Pereiras and
  • José González Pérez

28 February 2025

Oscillating water column (OWC) devices have been among the most extensively studied wave energy converters over the past decade. This paper focuses on a specific OWC configuration that employs twin unidirectional axial turbines, which alternate their...

  • Article
  • Open Access
11 Citations
4,604 Views
13 Pages

Constraints of Parametrically Defined Guide Vanes for a High-Head Francis Turbine

  • Filip Stojkovski,
  • Marija Lazarevikj,
  • Zoran Markov,
  • Igor Iliev and
  • Ole Gunnar Dahlhaug

6 May 2021

This paper is focused on the guide vane cascade as one of the most crucial stationary sub-systems of the hydraulic turbine, which needs to provide efficient inflow hydraulic conditions to the runner. The guide vanes direct the flow from the spiral ca...

  • Review
  • Open Access
38 Citations
7,710 Views
22 Pages

Coaxial Circular Jets—A Review

  • René van Hout,
  • Sudharson Murugan,
  • Abhijit Mitra and
  • Beni Cukurel

8 April 2021

This review article focuses on the near-field flow characteristics of coaxial circular jets that, despite their common usage in combustion processes, are still not well understood. In particular, changes in outer to inner jet velocity ratios, ru, abs...

  • Article
  • Open Access
10 Citations
9,091 Views
23 Pages

21 July 2021

Diffusers and the floor ahead of them create the majority of the downforce a vehicle creates. Outside motorsports, the diffuser is relatively unused, although its interaction with the ground is a consistent field of study owing to the aerodynamic ben...

  • Article
  • Open Access
2 Citations
7,865 Views
16 Pages

The present research focused on the analysis of the leakage flows developing from advanced blade tip geometries. The aerodynamic field of a contoured blade tip and of a high-performance rimmed blade were investigated against a baseline squealer rotor...

  • Article
  • Open Access
2 Citations
2,882 Views
19 Pages

31 October 2022

The ammonia oxidation reaction on solid platinum–rhodium gauze is a critical step in nitric acid production. As the global demand for food and fertilisers keeps steadily growing, this remains an essential reaction in the chemical industry. Howe...

  • Article
  • Open Access
8 Citations
6,206 Views
13 Pages

Effect of Electrode Shape and Flow Conditions on the Electrochemical Detection with Band Microelectrodes

  • Maher Al Khatib,
  • Marco Bellini,
  • Rebecca Pogni,
  • Andrea Giaccherini,
  • Massimo Innocenti,
  • Francesco Vizza and
  • Alessandro Lavacchi

21 September 2018

In this work, we report the analysis of the electrochemical detection of electroactive species with band microelectrodes that operate under controlled convection. The study focuses on the determination of the collection efficiency of the analyte as a...

  • Feature Paper
  • Review
  • Open Access
12 Citations
4,059 Views
18 Pages

MEMS Vaporazing Liquid Microthruster: A Comprehensive Review

  • Donato Fontanarosa,
  • Luca Francioso,
  • Maria Grazia De Giorgi and
  • Maria Rosaria Vetrano

26 September 2021

The interest in developing efficient nano and pico-satellites has grown in the last 20 years. Secondary propulsion systems capable of serving specific maneuvers are an essential part of these small satellites. In particular, Micro-Electro-Mechanical...

  • Article
  • Open Access
1 Citations
1,394 Views
24 Pages

2 December 2024

This study examines the dynamic fluid behavior of a PWM-controlled Solenoid-Operated Gas Admission Valve (SOGAV) for large-bore CNG engines using 3D Computational Fluid Dynamics (CFD) simulations with dynamic mesh techniques. The research focuses on...

  • Article
  • Open Access
8 Citations
1,961 Views
23 Pages

14 November 2023

Bridge structures face a critical threat from localized scour-induced damage, prompting urgent attention to civil infrastructure resilience. Prior research has primarily focused on the influence of pier shapes on scour patterns. However, the explorat...

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