Special Issue "Heat Transfer and Fluids Properties of Nanofluids"

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Synthesis, Interfaces and Nanostructures".

Deadline for manuscript submissions: 30 June 2021.

Special Issue Editor

Prof. Dr. S M Sohel Murshed
Website1 Website2
Guest Editor
University of Lisbon (IST), Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal
Interests: nanofluids; thermophysical properties of fluids; advanced cooling technologies; droplet-based microfluidics; energy technologies; fluids flow and phase-change heat transfer; thermal managements
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Special Issue Information

Dear Colleagues,

Nanofluids have recently emerged as a hot research field, as evidenced by the worldwide research and publication explosion on them. Despite being a popular topic, though, the real progress of this field is rather slow, and its real-world application is impeded due to various complicated challenges, including its anomalous thermophysical properties, stability, sustainable usefulness, and compatibility in many conventional systems or devices. Although extensive research efforts have been focused on thermophysical properties of nanofluids and most of the research has demonstrated significant enhancement in thermophysical properties, there remains a large volume of scattered and inconsistent data leading to not yet reaching unanimous conclusions on the enhancement and its underlying mechanisms. Additionally, a large number of research efforts have been made to develop models for the prediction of the thermophysical properties, particularly thermal conductivity of nanofluids. Again, no widely accepted theoretical models are available for nanofluids. The viscosity of nanofluids is also a key property, particularly important for their applications under a flowing condition. On top of all these, a major challenge with nanofluids is to obtain sustainable stability and persistent properties over a long duration. All these issues are very crucial for nanofluid development and applications, and research in these areas has been growing in recent years.

The aim of this Special Issue is to publish a wide range of topics related to nanofluids with special emphasis on thermophysical and heat transfer properties and features, challenges, and applications in all spectra in order make this Special Issue a useful resource for the people involved in this field as well as for the progress of this field.

Articles to be considered for this Special Issue include original full papers, communications, and critical reviews in any area/topic of the keywords and beyond.


Prof. Dr. S M Sohel Murshed
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 papers will be 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. Nanomaterials 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 2200 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

  • Nanofluids
  • Hybrid nanofluids
  • Ionanofluids
  • Nanosalts
  • NanoPCM
  • Nanoparticles
  • Thermophysical properties
  • Convective heat transfer performance
  • Boiling heat transfer features
  • Nanofluids in MEMs
  • Nanofluid applications

Published Papers (1 paper)

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Research

Open AccessArticle
Experimental Investigation on Stability, Viscosity, and Electrical Conductivity of Water-Based Hybrid Nanofluid of MWCNT-Fe2O3
Nanomaterials 2021, 11(1), 136; https://doi.org/10.3390/nano11010136 - 08 Jan 2021
Abstract
The superiority of nanofluid over conventional working fluid has been well researched and proven. Newest on the horizon is the hybrid nanofluid currently being examined due to its improved thermal properties. This paper examined the viscosity and electrical conductivity of deionized water (DIW)-based [...] Read more.
The superiority of nanofluid over conventional working fluid has been well researched and proven. Newest on the horizon is the hybrid nanofluid currently being examined due to its improved thermal properties. This paper examined the viscosity and electrical conductivity of deionized water (DIW)-based multiwalled carbon nanotube (MWCNT)-Fe2O3 (20:80) nanofluids at temperatures and volume concentrations ranging from 15 °C to 55 °C and 0.1–1.5%, respectively. The morphology of the suspended hybrid nanofluids was characterized using a transmission electron microscope, and the stability was monitored using visual inspection, UV–visible, and viscosity-checking techniques. With the aid of a viscometer and electrical conductivity meter, the viscosity and electrical conductivity of the hybrid nanofluids were determined, respectively. The MWCNT-Fe2O3/DIW nanofluids were found to be stable and well suspended. Both the electrical conductivity and viscosity of the hybrid nanofluids were augmented with respect to increasing volume concentration. In contrast, the temperature rise was noticed to diminish the viscosity of the nanofluids, but it enhanced electrical conductivity. Maximum increments of 35.7% and 1676.4% were obtained for the viscosity and electrical conductivity of the hybrid nanofluids, respectively, when compared with the base fluid. The obtained results were observed to agree with previous studies in the literature. After fitting the obtained experimental data, high accuracy was achieved with the formulated correlations for estimating the electrical conductivity and viscosity. The examined hybrid nanofluid was noticed to possess a lesser viscosity in comparison with the mono-particle nanofluid of Fe2O3/water, which was good for engineering applications as the pumping power would be reduced. Full article
(This article belongs to the Special Issue Heat Transfer and Fluids Properties of Nanofluids)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Nanoparticle Aggregation in Aqueous Solutions and their Application
Authors: Hammad Younes; Haiping Hong; G. P. Peterson
Affiliation: 1Department of Electrical Engineering South Dakota School of Mines and Technology Rapid City, South Dakota 57701, USA 2Woodruff School of Mechanical Engineering Georgia Institute of Technology Atlanta, Georgia 30332, USA
Abstract: A better understanding of the bonding and aggregation process that occurs between carbon nanomaterials and metal oxide particles in aqueous solutions is important in the development of nanofluids for applications in the areas of sensor development, highly conductive thermal nanofluids, high capacity electro-magnetic shielding, nanotube alignment, polymer composites, Li-ion batteries, and many other areas. The current work investigated this process and presents a detailed description of the aggregation process between the carbon nanomaterials and metal oxide particles (metals) in various aqueous solutions. The results indicate that the charge attraction between the particles results in a strong, homogeneous bonding process that occurs within the aqueous solution and for the first time demonstrates and describes the nanoscale aggregation process. The relative importance of the many parameters that impact that aggregation process are identified and discussed. Guidelines for controlling this process are presented and discussed, along with methodologies whereby the manufacturing process can be optimized to improve the manufacturing processes commonly utilized. The results have significant commercial value in the fabrication of application specific nanofluids.

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