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Dynamic, Magnetic and Thermal Properties of Nanofluids

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Nanotechnology and Applied Nanosciences".

Deadline for manuscript submissions: closed (20 August 2023) | Viewed by 2480

Special Issue Editors


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Guest Editor
Department of Mathematics, Government College University Faisalabad, Faisalabad, Pakistan
Interests: nanofluid; numerical simulation; thermal energy storage; Matlab; Comsol; Ansys

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Guest Editor
School of Energy and Power Engineering, Jiangsu University, Zhenjiang, China
Interests: nanofluid

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Guest Editor
Department of Mathematics, Government College University Faisalabad, Layyah Campus, Layyah 31200, Pakistan
Interests: nanofluid; cylinder; wedge (geometry); radiative transfer; Rayleigh number

Special Issue Information

Dear Colleagues,

Advanced electronic gadgets frequently encounter challenges because of the heat control from the enhanced thermal rise or the reduction in the available space for thermal emission. Such drawbacks are overwhelmed by the development of a pre-eminent model for heat-repelling equipment or by amplifying thermal transport features. Electronic cooling devices are one of the primary challenges of newer generation technology. Today's world is facing a series of problems with the performance of electronic devices due to thermal imbalances. One of the biggest challenges arises in how to manage efficient thermal transportation in the heat exchangers. Thus, the quest for efficient thermal performance has continued to prevent overheating produced in communication and computer devices, transportation, household appliances, electronics and heavy mechanical industries. The idea of enhancing the thermal conductivity of working fluids promised a popular solution to the confronting situation. Nanofluids have expanded the enthusiasm for many engineering fields because of their excellent characteristics, which can be effectively utilized in electronics cooling and also improve energy effectiveness. The credit is given to Choi who developed the concept of nanofluids. The term nanofluid refers to a liquid containing a dispersion of submicronic solid particles (nanoparticles) with a typical length on the order of 1–50 nm. Nanofluids have the higher heat conductivity efficiency than pure fluid due to a volume fraction (usually < 5%) of metal nanoparticles. Heat and mass transfer of nanofluids have been widely investigated. For almost two decades, nanofluid has been used as an advanced heat transfer fluid, especially in power generation, transportation, electronics cooling, chemical production and biomedical industries. Various base fluids with a mixture of different types of nanoparticles have been studied. Scientific research on nanoparticles is extreme as they have numerous potential applications in physics, medicine, electronics and optics. Nanoparticles have further physical properties that must be measured for an entire depiction, for example, shape, size, surface properties, dispersion state and crystallinity. Nanoparticles might be described in complex matrices, for example, food, soil, water, inks, polymers and complex mixtures of natural fluids such as in blood or cosmetics.

Dr. Hassan Waqas
Dr. Syed Muhammad Raza Shah Naqvi
Dr. Sajjad Hussain
Guest Editors

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. Applied Sciences is an international peer-reviewed open access semimonthly 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 2400 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

  • magnetohydrodynamics
  • nanofluids
  • thermal radiation
  • heat transfer analysis
  • numerical simulation

Published Papers (1 paper)

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Research

29 pages, 32060 KiB  
Article
Study on Kinematic Structure Performance and Machining Characteristics of 3-Axis Machining Center
by Tzu-Chi Chan, Chia-Chuan Chang, Aman Ullah and Han-Huei Lin
Appl. Sci. 2023, 13(8), 4742; https://doi.org/10.3390/app13084742 - 10 Apr 2023
Cited by 4 | Viewed by 1818
Abstract
The rigidity and natural frequency of machine tools considerably influence cutting and generate great forces when the tool is in contact with the workpiece. The poor static rigidity of these Vertical Machining Centre machines can cause deformations and destroy the workpiece. If the [...] Read more.
The rigidity and natural frequency of machine tools considerably influence cutting and generate great forces when the tool is in contact with the workpiece. The poor static rigidity of these Vertical Machining Centre machines can cause deformations and destroy the workpiece. If the natural frequency of the machines is low or close to the commonly used cutting frequency, they vibrate considerably, resulting in poor workpiece surfaces and thus shortening the lifespan of the tool. The main objective of this study was to develop an experimental technique for measuring the effect of machine tool stiffness. The static rigidity of the X-axis was found to be 2.20 kg/μm, while the first-, second-, and third-order natural frequencies were 27.3, 34.4, and 48.3 Hz, respectively. When an external force of 1000 N was applied, the Y-axis motor load was found to be approximately 2740 N-mm. In this study, the finite element method was mainly used to analyze the structure, static force, modal, frequency spectrum, and transient state of machine tools. The results of the static analysis were verified and compared to the experimental results. The analysis model and conditions were modified to ensure that the analysis results were consistent with the experimental results. Multi-body dynamics analyses were conducted by examining the force of each component and casting of the machine tools and the load of the motor during the cutting stroke. Moreover, an external force was applied to simulate the load condition of the motor when the machine tool is cutting to confirm the feed. In this study, we used topology optimization for effective structural optimization designs. The optimal conditions for topology optimization included lightweight structures, which resulted in reduced structural deformation and increased natural frequency. Full article
(This article belongs to the Special Issue Dynamic, Magnetic and Thermal Properties of Nanofluids)
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