Flows in Micro- and Nano-Systems

A special issue of Micromachines (ISSN 2072-666X). This special issue belongs to the section "A:Physics".

Deadline for manuscript submissions: 31 March 2025 | Viewed by 1381

Special Issue Editor


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Guest Editor
School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, UK
Interests: kinetic theory; gas dynamics; non-continuum flows; micro/nano-fluidics; compressible fluid mechanics; multiphase and granular flows; swarm behaviour

Special Issue Information

Dear Colleagues,

Experimental data from pressure-driven liquid that flow through nanotubes have shown flow velocities over the past two decades that are four to five orders of magnitude higher than those predicted by the classical theory. Attempts to explain these enhanced mass flow rates at the nanoscale are still to be successful. In classical gas dynamics, the temperature field alone cannot induce a steady flow in gas without an external force such as gravity. However, in rarefied gas, the temperature field in gas under surface effects can induce a variety of flows. Interfacial phenomena at the solid–liquid interface at the micro- and nanoscale have various functions in micro- and nanofluidic device fabrications. Some of these devices operate on the physical mechanism of flows of electrolyte solutions. Viscous thickening due to electrostatic interactions is an example of a phenomenon to be understood in these flows. The influence of effects such as velocity slip and surface diffusion in the prediction of profiles of velocity, electrical potential, charge, and ion-transport characteristics is also to be understood. Multiphase flow in microfluidic systems generally shows complicated behaviour, but it has many practical uses. This Special Issue aims to discuss the current theoretical, numerical, and experimental progress in understanding the physical mechanisms of these flows.

We look forward to receiving your submissions.

Dr. S. Kokou Dadzie
Guest Editor

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Keywords

  • nanofluid heat transfer
  • nano-liquid flows
  • thermal-creeping flows/thermophoresis
  • diffusion in microfluidics
  • Newtonian/non-Newtonian electrolyte flows
  • electro-viscous flows
  • multiphase flows in micro- and nanochannels

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Published Papers (1 paper)

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Review

42 pages, 10634 KiB  
Review
Computational Fluid–Structure Interaction in Microfluidics
by Hafiz Muhammad Musharaf, Uditha Roshan, Amith Mudugamuwa, Quang Thang Trinh, Jun Zhang and Nam-Trung Nguyen
Micromachines 2024, 15(7), 897; https://doi.org/10.3390/mi15070897 - 9 Jul 2024
Viewed by 950
Abstract
Micro elastofluidics is a transformative branch of microfluidics, leveraging the fluid–structure interaction (FSI) at the microscale to enhance the functionality and efficiency of various microdevices. This review paper elucidates the critical role of advanced computational FSI methods in the field of micro elastofluidics. [...] Read more.
Micro elastofluidics is a transformative branch of microfluidics, leveraging the fluid–structure interaction (FSI) at the microscale to enhance the functionality and efficiency of various microdevices. This review paper elucidates the critical role of advanced computational FSI methods in the field of micro elastofluidics. By focusing on the interplay between fluid mechanics and structural responses, these computational methods facilitate the intricate design and optimisation of microdevices such as microvalves, micropumps, and micromixers, which rely on the precise control of fluidic and structural dynamics. In addition, these computational tools extend to the development of biomedical devices, enabling precise particle manipulation and enhancing therapeutic outcomes in cardiovascular applications. Furthermore, this paper addresses the current challenges in computational FSI and highlights the necessity for further development of tools to tackle complex, time-dependent models under microfluidic environments and varying conditions. Our review highlights the expanding potential of FSI in micro elastofluidics, offering a roadmap for future research and development in this promising area. Full article
(This article belongs to the Special Issue Flows in Micro- and Nano-Systems)
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