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Crystals
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Recent Advances in Fluid Mechanics with Engineering Applications
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Recent Advances in Fluid Mechanics with Engineering Applications

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Liquid Crystals".

Deadline for manuscript submissions: closed (15 December 2021) | Viewed by 12160

Special Issue Editors

Dr. Kottakkaran Sooppy Nisar

E-Mail Website
Guest Editor
Prince Sattam bin Abdulaziz Unversity, Saudi Arabia
Interests: fluid dynamics; mathematical modeling; engineering problems; numerical solutions for PDEs and ODEs
Dr. Wentao Wu

E-Mail Website
Guest Editor
Department of Civil and architectural Engineering, Tennessee State University, Nashville, TN, USA
Interests: fluid dynamics; mathematical modeling; engineering problems; numerical solutions for PDEs and ODEs
Dr. Arshad Khan

E-Mail Website
Guest Editor
Department of Mathematics, University of Agriculture, Peshawar 25000, Pakistan
Interests: fluid mechanics; convection transfer in fluid; channell flow; heat transfer

Special Issue Information

Dear Colleagues,

Different fluids, like air, water, and other lubricants, are recognized as non-Newtonian fluids in various technologies. In many circumstances, the notion of Newtonian fluid behavior is not so trivial, and it may be more complicated. To overcome such complications a perturbed (non-Newtonian) model must be developed. The non-Newtonian behavior exists in several liquid materials like blood, ketchup, glue, paint, and custard. Because of its enormous and vital uses in industry, petroleum, chemical, and other fluid mechanics have attracted many researchers.

In this line, we propose the following topics for this Special Issue.

  1. liquid crystals and its applications in various fields
  2. Study of metals and its properties
  3. Nano particles and its characteristics
  4. MHD flow
  5. Heating process
  6. Modeling of wire coating
  7. Modeling and analysis of fluid problems
  8. Fractional operators related to crystals, materials, and fluid
  9. Nanofluids and stability analysis
  10. New numerical techniques and their utilization to fluid problems
  11. Thermophysical characteristics of nanofluids

Dr. Kottakkaran Sooppy Nisar
Dr. Wentao Wu
Dr. Arshad Khan
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. Crystals 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

  • Liquid crystals
  • Metals
  • Nano particles
  • Heating
  • Modelling and analysis
  • Nanofluids

Published Papers (5 papers)

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Research

12 pages, 2986 KiB  
Article
Heat Transfer and Flow Characteristics of Pseudoplastic Nanomaterial Liquid Flowing over the Slender Cylinder with Variable Characteristics
by Azad Hussain, Aysha Rehman, Naqash Ahmed, Ahmed S. El-Shafay, Sahar A. Najati, Abdulrazak H. Almaliki and El-Sayed M. Sherif
Crystals 2022, 12(1), 27; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst12010027 - 24 Dec 2021
Cited by 6 | Viewed by 2193
Abstract
The present article investigates heat transfer and pseudoplastic nanomaterial liquid flow over a vertical thin cylinder. The Buongiorno model is used for this analysis. The problem gains more significance when temperature-dependent variable viscosity is taken into account. Using suitable similarity variables, nonlinear flow [...] Read more.
The present article investigates heat transfer and pseudoplastic nanomaterial liquid flow over a vertical thin cylinder. The Buongiorno model is used for this analysis. The problem gains more significance when temperature-dependent variable viscosity is taken into account. Using suitable similarity variables, nonlinear flow equations are first converted into ordinary differential equations. The generating structure is solved by the MATLAB BVP4C algorithm. Newly developed physical parameters are focused. It is observed that the heat transfer rate and the skin friction coefficient is increased remarkably because of mixing nano-particles in the base fluid by considering γb=1, 2, 3, 4 and λ=1, 1.5, 2, 2.5, 3. It is found that the temperature field increases by inclining the values of thermophoresis and Brownian motion parameters. It is also evaluated that the velocity field decreases by increasing the values of the curvature parameter, Weissenberg number and buoyancy ratio characteristics. Full article
(This article belongs to the Special Issue Recent Advances in Fluid Mechanics with Engineering Applications)
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18 pages, 4418 KiB  
Article
Flow Analysis of Hybridized Nanomaterial Liquid Flow in the Existence of Multiple Slips and Hall Current Effect over a Slendering Stretching Surface
by Enran Hou, Fuzhang Wang, Muhammad Naveed Khan, Shafiq Ahmad, Aysha Rehman, Abdulrazak H. Almaliki, El-Sayed M. Sherif, Ahmed M. Galal and Maram S. Alqurashi
Crystals 2021, 11(12), 1546; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11121546 - 10 Dec 2021
Cited by 8 | Viewed by 1902
Abstract
Carbon nanotubes (CNTs) are favored materials in the manufacture of electrochemical devices because of their mechanical and chemical stability, good thermal and electrical conductivities, physiochemical consistency, and featherweight. With such intriguing carbon nanotubes properties in mind, the current research aims to investigate the [...] Read more.
Carbon nanotubes (CNTs) are favored materials in the manufacture of electrochemical devices because of their mechanical and chemical stability, good thermal and electrical conductivities, physiochemical consistency, and featherweight. With such intriguing carbon nanotubes properties in mind, the current research aims to investigate the flow of hybridized nano liquid containing MWCNTs (multi-wall carbon nanotubes) and SWCNTs (single-wall carbon nanotubes) across a slendering surface in the presence of a gyrotactic-microorganism. The temperature and solutal energy equation are modified with the impact of the modified Fourier and Fick’s law, binary chemical reaction, viscous dissipation, and joule heating. The slip conditions are imposed on the surface boundaries. The flow equations are converted into ODEs by applying similarity variables. The bvp4c approach is applied to tackle the coupled and extremely nonlinear boundary value problem. The outputs are compared with the PCM (Parametric continuation method) to ensure that the results are accurate. The influence of involved characteristics on energy distribution, velocity profiles, concentration, and microorganism field are presented graphically. It is noted that the stronger values of the wall thickness parameter and the Hartmann number produce a retardation effect; as a result, the fluid velocity declines for MWCNT and SWCNT hybrid nano liquid. Furthermore, the transport of the mass and heat rate improves with a higher amount of both the hybrid and simple nanofluids. The amount of local skin friction and the motile density of microorganisms are discussed and tabulated. Furthermore, the findings are validated by comparing them to the published literature, which is a notable feature of the present results. In this aspect, venerable stability has been accomplished. Full article
(This article belongs to the Special Issue Recent Advances in Fluid Mechanics with Engineering Applications)
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11 pages, 4107 KiB  
Article
Unsteady Convective MHD Flow and Heat Transfer of a Viscous Nanofluid across a Porous Stretching/Shrinking Surface: Existence of Multiple Solutions
by Nawal A. Alshehri, Awatef Abidi, Muhammad Riaz Khan, Yanala Dharmendar Reddy, Saim Rasheed, Elham Alali and Ahmed M. Galal
Crystals 2021, 11(11), 1359; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11111359 - 08 Nov 2021
Cited by 28 | Viewed by 1992 | Correction
Abstract
The suspension of tiny solid particles inside the energy transport liquids could enhance their thermal conductivity as well as provide an efficient and inventive approach to significantly improve their properties of heat transport. Therefore, our aim is to explore the radiative two-dimensional unsteady [...] Read more.
The suspension of tiny solid particles inside the energy transport liquids could enhance their thermal conductivity as well as provide an efficient and inventive approach to significantly improve their properties of heat transport. Therefore, our aim is to explore the radiative two-dimensional unsteady flow of a viscous nanofluid about an aligned magnetic field that includes the joint effect of suction, velocity slip, and heat source across a porous convective stretching/shrinking surface. Initially, using non-dimensional variables, the nonlinear governing partial differential equations (PDEs) were transformed into ordinary differential equations (ODEs) which were subsequently solved with the help of bvp4c built-in package in MATLAB. The results declare that escalating the values of the unsteadiness parameter escalates the friction drag whereas it reduces with the escalation of the slip parameter. Furthermore, the heat transfer rate escalates with the escalation of radiation and concentration parameter, and the escalation of the heat source parameter causes to reduce the heat transfer rate. Finally, it is found that the rate of heat transfer and friction drag continuously improve and decline against the rising rates of stretching, respectively. Full article
(This article belongs to the Special Issue Recent Advances in Fluid Mechanics with Engineering Applications)
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12 pages, 4345 KiB  
Article
Numerical Analysis of Micro-Rotation Effect on Nanofluid Flow for Vertical Riga Plate
by Hammad Alotaibi and Khuram Rafique
Crystals 2021, 11(11), 1315; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11111315 - 28 Oct 2021
Cited by 21 | Viewed by 1390
Abstract
The investigation of heat and mass transport properties of the flow is a key research area in mathematics, physics, engineering, and computer science. This article focuses on studying the heat and mass transport phenomenon for micropolar nanofluid flow generated by a vertical stretching [...] Read more.
The investigation of heat and mass transport properties of the flow is a key research area in mathematics, physics, engineering, and computer science. This article focuses on studying the heat and mass transport phenomenon for micropolar nanofluid flow generated by a vertical stretching Riga plate. It is assembled by including a spanwise-aligned array of alternating electrodes and permanent magnets. This technique produces electromagnetic hydrodynamic behavior in flow. Our aim for this article is to examine the influences of Brownian motion and thermophoresis on a Riga plate. We also explore the micro-rotational effects of the particles. The flow behavior of the modeled problem has also been computed numerically and presented by the graph. It is verified that the numerical computations show a good approval with the reported earlier studies. The velocity profile is computed and presented by the graph, which shows direct correspondence with the modified Hartmann number. We also show that energy and mass flux rates increase by increasing modified Hartmann numbers. The results also revealed that concentration distribution diminishes for larger values of Brownian motion, whereas temperature distribution portrays increases for larger values of both Brownian motion and thermophoresis. Moreover, it is found that concentration distribution shows direct relation with thermophoretic impact. Full article
(This article belongs to the Special Issue Recent Advances in Fluid Mechanics with Engineering Applications)
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22 pages, 974 KiB  
Article
A Framework for the Magnetic Dipole Effect on the Thixotropic Nanofluid Flow Past a Continuous Curved Stretched Surface
by Noor Saeed Khan, Auwalu Hamisu Usman, Arif Sohail, Abid Hussanan, Qayyum Shah, Naeem Ullah, Poom Kumam, Phatiphat Thounthong and Usa Wannasingha Humphries
Crystals 2021, 11(6), 645; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst11060645 - 07 Jun 2021
Cited by 18 | Viewed by 2998
Abstract
The magnetic dipole effect for thixotropic nanofluid with heat and mass transfer, as well as microorganism concentration past a curved stretching surface, is discussed. The flow is in a porous medium, which describes the Darcy–Forchheimer model. Through similarity transformations, the governing equations of [...] Read more.
The magnetic dipole effect for thixotropic nanofluid with heat and mass transfer, as well as microorganism concentration past a curved stretching surface, is discussed. The flow is in a porous medium, which describes the Darcy–Forchheimer model. Through similarity transformations, the governing equations of the problem are transformed into non-linear ordinary differential equations, which are then processed using an efficient and powerful method known as the homotopy analysis method. All the embedded parameters are considered when analyzing the problem through solution. The dipole and porosity effects reduce the velocity, while the thixotropic nanofluid parameter increases the velocity. Through the dipole and radiation effects, the temperature is enhanced. The nanoparticles concentration increases as the Biot number and curvature, solutal, chemical reaction parameters increase, while it decreases with increasing Schmidt number. The microorganism motile density decreases as the Peclet and Lewis numbers increase. Streamlines demonstrate that the trapping on the curved stretched surface is uniform. Full article
(This article belongs to the Special Issue Recent Advances in Fluid Mechanics with Engineering Applications)
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