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Micromachines
Special Issues
Progress on Nanoparticles in Fluid Mechanics for Advancement of Micromachines
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Progress on Nanoparticles in Fluid Mechanics for Advancement of Micromachines

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

Deadline for manuscript submissions: closed (31 January 2023) | Viewed by 3082

Special Issue Editor

Dr. Ghulam Rasool

E-Mail Website
Guest Editor
School of Mathematical Sciences, Zhejiang University, Hangzhou 310027, China
Interests: catalytic materials; nano-structured catalyst materials; catalysis of sustainable energy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The concept of formulating mono/hybrid nanofluids is not new to researchers. This idea has wide applications in the heat transfer mechanism, nanotechnology, advanced fluid flow and fluid mechanics, and in the manufacturing of several devices. Therefore, the practical significance of nanoparticles in working fluids is essential. This development mainly emphasizes the enhancement of thermophysical properties and the performance of the fluids in single- and multiphase flows. The same concept is highly appreciated in designing several industrial and mechanical engineering devices. For this Special Issue, we are looking to collect research articles from all the applied areas of nanofluids, especially in micromachines, heater exchangers, renewable energy, porous mediums and others, targeting the shape, size and volume fraction of nanoparticles. The focus should be on the type of material used in nanofluids’ formulation, the fraction size of the nanoparticles, and the shape of the nanoparticles. Furthermore, all relevant sections of importance in terms of industrial and engineering related to the volume fraction, size and shape of nanoparticles in the formulation of nanofluids are welcome.

Dr. Ghulam Rasool
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Micromachines is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • fluid flow through micro-channels
  • entropy generation
  • irreversibility analysis
  • MHD and EMHD flows
  • volume fraction of nanoparticles
  • size and shape of nanoparticles
  • mono and hybrid nanofluids
  • nanoparticles

Published Papers (2 papers)

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Research

19 pages, 8363 KiB  
Article
Darcy–Forchheimer Magnetized Nanofluid flow along with Heating and Dissipation Effects over a Shrinking Exponential Sheet with Stability Analysis
by Liaquat Ali Lund, Abdul Fattah Chandio, Narcisa Vrinceanu, Ubaidullah Yashkun, Zahir Shah and Ahmed Alshehri
Micromachines 2023, 14(1), 106; https://doi.org/10.3390/mi14010106 - 30 Dec 2022
Cited by 6 | Viewed by 1140
Abstract
Nanoparticles have presented various hurdles to the scientific community during the past decade. The nanoparticles dispersed in diverse base fluids can alter the properties of fluid flow and heat transmission. In the current examination, a mathematical model for the 2D magnetohydrodynamic (MHD) Darcy–Forchheimer [...] Read more.
Nanoparticles have presented various hurdles to the scientific community during the past decade. The nanoparticles dispersed in diverse base fluids can alter the properties of fluid flow and heat transmission. In the current examination, a mathematical model for the 2D magnetohydrodynamic (MHD) Darcy–Forchheimer nanofluid flow across an exponentially contracting sheet is presented. In this mathematical model, the effects of viscous dissipation, joule heating, first-order velocity, and thermal slip conditions are also examined. Using similarity transformations, a system of partial differential equations (PDEs) is converted into a set of ordinary differential equations (ODEs). The problem is quantitatively solved using the three-step Lobatto-three formula. This research studied the effects of the dimensionlessness, magnetic field, ratio of rates, porosity, Eckert number, Prandtl number, and coefficient of inertia characteristics on fluid flow. Multiple solutions were observed. In the first solution, the increased magnetic field, porosity parameter, slip effect, and volume percentage of the copper parameters reduce the velocity field along the η-direction. In the second solution, the magnetic field, porosity parameter, slip effect, and volume percentage of the copper parameters increase the η-direction velocity field. For engineering purposes, the graphs show the impacts of factors on the Nusselt number and skin friction. Finally, the stability analysis was performed to determine which solution was the more stable of the two. Full article
(This article belongs to the Special Issue Progress on Nanoparticles in Fluid Mechanics for Advancement of Micromachines)
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20 pages, 18410 KiB  
Article
Finite Element Methodology of Hybridity Nanofluid Flowing in Diverse Wavy Sides of Penetrable Cylindrical Chamber under a Parallel Magnetic Field with Entropy Generation Analysis
by Fares Redouane, Wasim Jamshed, Mohamed R. Eid, Suriya Uma Devi S, Awad Musa, Sayed M. Eldin, M. Prakash and Imran Ullah
Micromachines 2022, 13(11), 1905; https://doi.org/10.3390/mi13111905 - 4 Nov 2022
Cited by 6 | Viewed by 1258
Abstract
In a cylindrical cavity, the convection and entropy of the hybrid nanofluid were studied. We have introduced a rectangular fin inside the cylinder; the fin temperature is at Th. The right waving wall is cooled to Tc. The upper [...] Read more.
In a cylindrical cavity, the convection and entropy of the hybrid nanofluid were studied. We have introduced a rectangular fin inside the cylinder; the fin temperature is at Th. The right waving wall is cooled to Tc. The upper and lower walls are insulated. This study contains the induction of a constant magnetic field. The Galerkin finite element method (GFEM) is utilized to treat the controlling equations obtained by giving Rayleigh number values between Ra (103–106) and Hartmann number ratio Ha (0, 25, 50, 100) and Darcy ranging between Da (10−2–10−5) and the porosity ratio is ε (0.2, 0.4, 0.6, 0.8), and the size of the nanoparticles is ϕ (0.02, 0.04, 0.06, 0.08). The range is essential for controlling both fluid flow and the heat transport rate for normal convection. The outcomes show how Da affects entropy and leads to a decline in entropy development. The dynamic and Nusselt mean diverge in a straight line. The domain acts in opposition to the magnetic force while flowing. Highest entropy-forming situations were found in higher amounts of Ra, Da, and initial values of Ha. Parameters like additive nanoparticles (ϕ) and porosity (ε) exert diagonal dominant trends with their improving values. Full article
(This article belongs to the Special Issue Progress on Nanoparticles in Fluid Mechanics for Advancement of Micromachines)
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