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Energies
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Nanoscale Heat Transfer and Fluid Flow, Multiphase Flows, and CFD...
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Nanoscale Heat Transfer and Fluid Flow, Multiphase Flows, and CFD Research

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "J1: Heat and Mass Transfer".

Deadline for manuscript submissions: closed (31 March 2022) | Viewed by 11074

Special Issue Editor

Prof. Dr. Mohammad Reza Safaei

E-Mail Website
Guest Editor
Department of Civil and Environmental Engineering, Florida International University, Miami, FL 33199, USA
Interests: computational fluid dynamics; fluid mechanics; numerical simulation; CFD simulation; numerical modeling; numerical analysis; modeling and simulation; engineering, applied and computational mathematics; aerodynamics; engineering thermodynamics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Nanoscale and microscale heat transfer are a research topic that has attracted plenty of interest in recent years. This type of heat transfer can be single or multiphase, including radiation, convection (free, forced or mixed), and conduction. Regarding the recent progress carried out in nanotechnology, the usage of nanomaterials has become more significant in heat transfer systems, while there are many capacities and unknown phenomena which should be discovered. It is noted that the presence of nanoparticles in common fluids leads to the promotion of various mechanisms, though not limited to particulate Brownian motion, thermophoresis, or increment of some thermophysical properties such as thermal conductivity, viscosity, density, and heat capacity. Due to this, world-class researchers are warmly invited and encouraged to submit their findings to the Special Issue entitled “Nanoscale Heat Transfer and Fluid Flow, Multiphase Flows, and CFD Research”, which will include any investigation about the multiphase flow, such as boiling heat transfer, evaporation, fouling and sedimentation investigations, mass transfer, computational fluid dynamic methods, and new findings in novel nanomaterials generation. Additionally, with this Special Issue, we would be interested in investigating more in-depth the complicated characteristics and behavior of nanomaterials in the thermal systems; hence, numerical and experimental investigations are encouraged for submission to this Special Issue.

Prof. Dr. Mohammad Reza Safaei
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. Energies 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 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

  • Boiling
  • Application of nanofluids in the renewable energy
  • Active and passive industrial systems
  • Thermal systems sciences
  • Nanoparticle sedimentation
  • CFD modeling of nanofluids

Published Papers (4 papers)

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Research

12 pages, 4398 KiB  
Article
Multicomponent Shale Oil Flow in Real Kerogen Structures via Molecular Dynamic Simulation
by Jie Liu, Yi Zhao, Yongfei Yang, Qingyan Mei, Shan Yang and Chenchen Wang
Energies 2020, 13(15), 3815; https://0-doi-org.brum.beds.ac.uk/10.3390/en13153815 - 24 Jul 2020
Cited by 24 | Viewed by 2550
Abstract
As an unconventional energy source, the development of shale oil plays a positive role in global energy, while shale oil is widespread in organic nanopores. Kerogen is the main organic matter component in shale and affects the flow behaviour in nanoscale-confined spaces. In [...] Read more.
As an unconventional energy source, the development of shale oil plays a positive role in global energy, while shale oil is widespread in organic nanopores. Kerogen is the main organic matter component in shale and affects the flow behaviour in nanoscale-confined spaces. In this work, a molecular dynamic simulation was conducted to study the transport behaviour of shale oil within kerogen nanoslits. The segment fitting method was used to characterise the velocity and flow rate. The heterogeneous density distributions of shale oil and its different components were assessed, and the effects of different driving forces and temperatures on its flow behaviours were examined. Due to the scattering effect of the kerogen wall on high-speed fluid, the heavy components (asphaltene) increased in bulk phase regions, and the light components, such as methane, were concentrated in boundary layers. As the driving force increased, the velocity profile demonstrated plug flow in the bulk regions and a half-parabolic distribution in the boundary layers. Increasing the driving force facilitated the desorption of asphaltene on kerogen walls, but increasing the temperature had a negative impact on the flow velocity. Full article
(This article belongs to the Special Issue Nanoscale Heat Transfer and Fluid Flow, Multiphase Flows, and CFD Research)
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16 pages, 5361 KiB  
Article
The Effect of Inclination Angle and Reynolds Number on the Performance of a Direct Contact Membrane Distillation (DCMD) Process
by Adnan Alhathal Alanezi, Mohammad Reza Safaei, Marjan Goodarzi and Yasser Elhenawy
Energies 2020, 13(11), 2824; https://0-doi-org.brum.beds.ac.uk/10.3390/en13112824 - 02 Jun 2020
Cited by 28 | Viewed by 3411
Abstract
In this numerical study, a direct contact membrane distillation (DCMD) system has been modeled considering various angles for the membrane unit and the Reynolds number range of 500 to 2000. A two-dimensional model developed based on the Navier–Stokes, energy, and species transport equations [...] Read more.
In this numerical study, a direct contact membrane distillation (DCMD) system has been modeled considering various angles for the membrane unit and the Reynolds number range of 500 to 2000. A two-dimensional model developed based on the Navier–Stokes, energy, and species transport equations were used. The governing equations were solved using the finite volume method (FVM). The results showed that with an increase in the Reynolds number of up to 1500, the heat transfer coefficient for all membrane angles increases, except for the inclination angle of 60°. Also, an increase in the membrane angle up to 90° causes the exit influence to diminish and the heat transfer to be augmented. Such findings revealed that the membrane inclination angle of 90° (referred to as the vertical membrane) with Reynolds number 2000 could potentially have the lowest temperature difference. Likewise, within the Reynolds numbers of 1000 and 2000, by changing the inclination angle of the membrane, temperature difference remains constant, however, for Reynolds numbers up to 500, the temperature difference reduces intensively. Full article
(This article belongs to the Special Issue Nanoscale Heat Transfer and Fluid Flow, Multiphase Flows, and CFD Research)
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14 pages, 8341 KiB  
Article
Thermal Transport in Nonlinear Unsteady Colloidal Model by Considering the Carbon Nanomaterials Length and Radius
by Syed Tauseef Mohyud-Din, Adnan, T. Abdeljawad, Umar Khan, Naveed Ahmed and Ilyas Khan
Energies 2020, 13(10), 2448; https://0-doi-org.brum.beds.ac.uk/10.3390/en13102448 - 13 May 2020
Cited by 3 | Viewed by 1554
Abstract
Thermal transport analysis in colloidal suspension is significant from industrial, engineering, and technological points of view. It has numerous applications comprised in medical sciences, chemical and mechanical engineering, electronics, home appliances, biotechnology, computer chips, detection of cancer cells, microbiology, and chemistry. The carbon [...] Read more.
Thermal transport analysis in colloidal suspension is significant from industrial, engineering, and technological points of view. It has numerous applications comprised in medical sciences, chemical and mechanical engineering, electronics, home appliances, biotechnology, computer chips, detection of cancer cells, microbiology, and chemistry. The carbon nanomaterials have significant thermophysical characteristics that are important for thermal transport. Therefore, the thermal transport in H2O composed by single and multiwalled carbon nanotubes is examined. The length and radius of the nanomaterials is in range of 3 μm ≤ L* ≤ 70 μm and 10 nm ≤ d ≤ 40 nm, respectively. The problem is modelled over a curved stretching geometry by inducing the velocity slip and thermal jump conditions. The coupling of Runge-Kutta (RK) and shooting technique is adopted for the solution. From the analysis it is perceived that the heat transfer at the surface drops for stretching. The heat transfer rate prevailed for Single walled carbon nanotubes SWCNTs-H2O colloidal suspension. The suction and stretching of the surface resist the shear stresses and more shear stress trends are investigated for larger curvature. Full article
(This article belongs to the Special Issue Nanoscale Heat Transfer and Fluid Flow, Multiphase Flows, and CFD Research)
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13 pages, 7004 KiB  
Article
A Novel Hybrid Model for Cu–Al2O3/H2O Nanofluid Flow and Heat Transfer in Convergent/Divergent Channels
by Umar Khan, Adnan, Naveed Ahmed, Syed Tauseef Mohyud-Din, Dumitru Baleanu, Ilyas Khan and Kottakkaran Sooppy Nisar
Energies 2020, 13(7), 1686; https://0-doi-org.brum.beds.ac.uk/10.3390/en13071686 - 03 Apr 2020
Cited by 25 | Viewed by 2485
Abstract
In the present study, our aim is to present a novel model for the flow of hybrid nanofluids in oblique channels. Copper and aluminum oxide have been used to obtain a novel hybrid nanofluid. The equations that govern the flow of hybrid nanofluids [...] Read more.
In the present study, our aim is to present a novel model for the flow of hybrid nanofluids in oblique channels. Copper and aluminum oxide have been used to obtain a novel hybrid nanofluid. The equations that govern the flow of hybrid nanofluids have been transformed to a set of nonlinear equations with the implementation of self-similar variables. The resulting system is treated numerically by using coupled shooting and Runge–Kutta (R-K) scheme. The behavior of velocity and temperature is examined by altering the flow parameters. The cases for narrowing (convergent) and opening (divergent) channels are discussed, and the influence of various parameters on Nusselt number is also presented. To indicate the reliability of the study, a comparison is made that confirms the accuracy of the study presented. Full article
(This article belongs to the Special Issue Nanoscale Heat Transfer and Fluid Flow, Multiphase Flows, and CFD Research)
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