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Advances in Computational Fluid Dynamics and Heat & Mass Transfer

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A special issue of Mathematical and Computational Applications (ISSN 2297-8747).

Deadline for manuscript submissions: closed (15 October 2021) | Viewed by 21520

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Prof. Dr. Mohammad Mehdi Rashidi

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Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
Interests: CFD; micro-fluidics; heat transfer; energy; fluid mechanics
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Prof. Dr. Somchai Wongwises

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Fluid Mechanics, Thermal Engineering and Multiphase Flow Research Lab. (FUTURE), Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology Thonburi, Bangmod, Bangkok 10140, Thailand
Interests: multiphase flow; micro-fluidics; nanofluids; heat and mass transfer
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Prof. Dr. Abdul-Majid Wazwaz

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Department of Mathematics, Saint Xavier University, Chicago, IL 60655, USA
Interests: solitons and compactons; N-solitons; ODE and PDE; numerical analysis; mathematical physics
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Dr. Mostafa Safdari Shadloo

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CORIA Lab., INSA Rouen/ CNRS (UMR 6614), Rouen, France
Interests: turbulence; computational fluid dynamics (CFD); multiphase flows; meshless methods; high performance computing (HPC)
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Special Issue Information

Dear Colleagues,

We are pleased to inform researchers in the fluid mechanics and heat and mass transfer communities that we are launching a high-impact Special Issue regarding advanced topics in Analytical, Numerical and Experimental Fluid Mechanics and Heat Transfer (FM-HT). At present, FM-HT research is very important in science, engineering and technology. The topics covered by this Special Issue include but are not limited to: fluid flow and heat transfer in porous media, drying technology, insulation of buildings, conventional and compact heat exchangers, design of nuclear reactors, geothermal systems, microfluidics, nanofluidics, multiphase flows, wind tunnels, turbulence modelling (URANS, RANS, DES, LES, DNS), oceanic and atmospheric flows, electronics cooling, heat pipes, thermal energy systems, HVAC systems, blood flow, filtration, building energy efficiency, ordinary and partial differential equations in FM-HT, frost and ice formation, convective flow, fractional calculus in FM-HT, physics of fluids, interfacial phenomena, renewable energy systems, energy recovery from solid waste, thermal system design and optimization, and adsorption.

Prof. Dr. Mohammad Mehdi Rashidi
Prof. Dr. Somchai Wongwises
Prof. Dr. Abdul-Majid Wazwaz
Prof. Dr. Mostafa Safdari Shadloo
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. Mathematical and Computational Applications 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 1400 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.

Published Papers (10 papers)

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Research

13 pages, 971 KiB

Open AccessArticle

Double-Diffusive Convection in Bidispersive Porous Medium with Coriolis Effect

by Chirnam Ramchandraiah, Naikoti Kishan, Gundlapally Shiva Kumar Reddy, Kiran Kumar Paidipati and Christophe Chesneau

Math. Comput. Appl. 2022, 27(4), 56; https://0-doi-org.brum.beds.ac.uk/10.3390/mca27040056 - 30 Jun 2022

Cited by 1 | Viewed by 1622

Abstract

In this paper, the thermal instability of rotating convection in a bidispersive porous layer is analyzed. The linear stability analysis is employed to examine the stability of the system. The neutral curves for different values of the physical parameters are shown graphically. The critical Rayleigh number is evaluated for appropriate values of the other governing parameters. Among the obtained results, we find: the Taylor number has a stabilizing effect on the onset of convection; the Soret number does not show any effect on oscillatory convection, as the oscillatory Rayleigh number is independent of the Soret number; there exists a threshold,

R_{c}^{*}

∈ (0.45, 0.46), for the solute Rayleigh number, such that, if

R_{C}

R_{c}^{*}

, then the convection arises via an oscillatory mode; and the oscillatory convection sets in and as soon as the value of the Soret number reaches a critical value, (∈(0.6, 0.7)), and the convection arises via stationary convection. Full article

(This article belongs to the Special Issue Advances in Computational Fluid Dynamics and Heat & Mass Transfer)

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15 pages, 1526 KiB

Open AccessArticle

Dissolution-Driven Convection in a Porous Medium Due to Vertical Axis of Rotation and Magnetic Field

by Gundlapally Shiva Kumar Reddy, Nilam Venkata Koteswararao, Ragoju Ravi, Kiran Kumar Paidipati and Christophe Chesneau

Math. Comput. Appl. 2022, 27(3), 53; https://0-doi-org.brum.beds.ac.uk/10.3390/mca27030053 - 20 Jun 2022

Viewed by 1354

Abstract

This article aims to study the effect of the vertical rotation and magnetic field on the dissolution-driven convection in a saturated porous layer with a first-order chemical reaction. The system’s physical parameters depend on the Vadasz number, the Hartmann number, the Taylor number, and the Damkohler number. We analyze them in an in-depth manner. On the other hand, based on an artificial neural network (ANN) technique, the Levenberg–Marquardt backpropagation algorithm is adopted to predict the distribution of the critical Rayleigh number and for the linear stability analysis. The simulated critical Rayleigh numbers obtained by the numerical study and the predicted critical Rayleigh numbers by the ANN are compared and are in good agreement. The system becomes more stable by increasing the Damkohler and Taylor numbers. Full article

(This article belongs to the Special Issue Advances in Computational Fluid Dynamics and Heat & Mass Transfer)

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15 pages, 1031 KiB

Open AccessArticle

Soret & Dufour and Triple Stratification Effect on MHD Flow with Velocity Slip towards a Stretching Cylinder

by Kandasamy Jagan and Sivanandam Sivasankaran

Math. Comput. Appl. 2022, 27(2), 25; https://0-doi-org.brum.beds.ac.uk/10.3390/mca27020025 - 09 Mar 2022

Cited by 10 | Viewed by 1970

Abstract

The phenomenon of convective flow with heat and mass transfer has been studied extensively due to its applications in various fields. The effects of nonlinear thermal radiation (NLTR), slip, thermal-diffusion (Soret) and diffusion-thermo (Dufour) on magenoto-hydrodynamic (MHD) flow towards a stretching cylinder in the presence of triple stratification (TSF) are investigated in this paper. The governing equations are transformed into an ODE by suitable transformations. The homotopy analysis method (HAM) is used to solve the ODE. The revamping of fluid flow, and heat transfer due to the presence of the Soret and Dufour effect, concentration slip and concentration stratification are analyzed. The temperature and local Sherwood number increases as the Dufour number rises, whereas the local Nusselt number decreases. While elevating the Soret number, the Sherwood number diminishes, whereas the concentration profile rises. The thermal boundary layer thickness enhances when thermal radiation increases. The rate of solute transport reduces while the concentration slip increases. Full article

(This article belongs to the Special Issue Advances in Computational Fluid Dynamics and Heat & Mass Transfer)

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13 pages, 6095 KiB

Open AccessArticle

Numerical Study on Mixed Convection Flow and Energy Transfer in an Inclined Channel Cavity: Effect of Baffle Size

by Sivanandam Sivasankaran and Kandasamy Janagi

Math. Comput. Appl. 2022, 27(1), 9; https://0-doi-org.brum.beds.ac.uk/10.3390/mca27010009 - 23 Jan 2022

Cited by 4 | Viewed by 1874

Abstract

The objective of the current numerical study is to explore the combined natural and forced convection and energy transport in a channel with an open cavity. An adiabatic baffle of finite length is attached to the top wall. The sinusoidal heating is implemented on the lower horizontal wall of the open cavity. The other areas of the channel cavity are treated as adiabatic. The governing equations are solved by the control volume technique for various values of relevant factors. The drag force, bulk temperature and average Nusselt number are computed. It is recognised that recirculating eddies beside the baffle become weak or disappear upon increasing the inclination angle of the channel/cavity. The average thermal energy transportation reduces steadily until the Ri = 1 and then it rises for all inclination angles and lengths of the baffle. Full article

(This article belongs to the Special Issue Advances in Computational Fluid Dynamics and Heat & Mass Transfer)

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25 pages, 583 KiB

Open AccessArticle

Fractional Modeling of Viscous Fluid over a Moveable Inclined Plate Subject to Exponential Heating with Singular and Non-Singular Kernels

by Aziz Ur Rehman, Muhammad Bilal Riaz, Wajeeha Rehman, Jan Awrejcewicz and Dumitru Baleanu

Math. Comput. Appl. 2022, 27(1), 8; https://0-doi-org.brum.beds.ac.uk/10.3390/mca27010008 - 19 Jan 2022

Cited by 11 | Viewed by 2124

Abstract

In this paper, a new approach to investigating the unsteady natural convection flow of viscous fluid over a moveable inclined plate with exponential heating is carried out. The mathematical modeling is based on fractional treatment of the governing equation subject to the temperature, velocity and concentration field. Innovative definitions of time fractional operators with singular and non-singular kernels have been working on the developed constitutive mass, energy and momentum equations. The fractionalized analytical solutions based on special functions are obtained by using Laplace transform method to tackle the non-dimensional partial differential equations for velocity, mass and energy. Our results propose that by increasing the value of the Schimdth number and Prandtl number the concentration and temperature profiles decreased, respectively. The presence of a Prandtl number increases the thermal conductivity and reflects the control of thickness of momentum. The experimental results for flow features are shown in graphs over a limited period of time for various parameters. Furthermore, some special cases for the movement of the plate are also studied and results are demonstrated graphically via Mathcad-15 software. Full article

(This article belongs to the Special Issue Advances in Computational Fluid Dynamics and Heat & Mass Transfer)

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24 pages, 3666 KiB

Open AccessArticle

Semi-Analytical Solution of Two-Dimensional Viscous Flow through Expanding/Contracting Gaps with Permeable Walls

by Mohammad Mehdi Rashidi, Mikhail A. Sheremet, Maryam Sadri, Satyaranjan Mishra, Pradyumna Kumar Pattnaik, Faranak Rabiei, Saeid Abbasbandy, Hussein Sahihi and Esmaeel Erfani

Math. Comput. Appl. 2021, 26(2), 41; https://0-doi-org.brum.beds.ac.uk/10.3390/mca26020041 - 23 May 2021

Cited by 12 | Viewed by 2451

Abstract

In this research, the analytical methods of the differential transform method (DTM), homotopy asymptotic method (HAM), optimal homotopy asymptotic method (OHAM), Adomian decomposition method (ADM), variation iteration method (VIM) and reproducing kernel Hilbert space method (RKHSM), and the numerical method of the finite difference method (FDM) for (analytical-numerical) simulation of 2D viscous flow along expanding/contracting channels with permeable borders are carried out. The solutions for analytical method are obtained in series form (and the series are convergent), while for the numerical method the solution is obtained taking into account approximation techniques of second-order accuracy. The OHAM and HAM provide an appropriate method for controlling the convergence of the discretization series and adjusting convergence domains, despite having a problem for large sizes of obtained results in series form; for instance, the size of the series solution for the DTM is very small for the same order of accuracy. It is hard to judge which method is the best and all of them have their advantages and disadvantages. For instance, applying the DTM to BVPs is difficult; however, solving BVPs with the HAM, OHAM and VIM is simple and straightforward. The extracted solutions, in comparison with the computational solutions (shooting procedure combined with a Runge–Kutta fourth-order scheme, finite difference method), demonstrate remarkable accuracy. Finally, CPU time, average error and residual error for different cases are presented in tables and figures. Full article

(This article belongs to the Special Issue Advances in Computational Fluid Dynamics and Heat & Mass Transfer)

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32 pages, 20635 KiB

Open AccessFeature PaperArticle

Finite Element Analysis of Laminar Heat Transfer within an Axial-Flux Permanent Magnet Machine

by Robin Willems, Léo A. J. Friedrich and Clemens V. Verhoosel

Math. Comput. Appl. 2021, 26(1), 23; https://0-doi-org.brum.beds.ac.uk/10.3390/mca26010023 - 10 Mar 2021

Cited by 1 | Viewed by 2583

Abstract

Axial-Flux Permanent Magnet (AFPM) machines have gained popularity over the past few years due to their compact design. Their application can be found, for example, in the automotive and medical sectors. For typically considered materials, excessive heat can be generated, causing possible irreversible damage to the magnets, bonding, or other structural parts. In order to optimize cooling, knowledge of the flow and the consequent temperature distribution is required. This paper discusses the flow types and heat transfer present inside a typical AFPM machine. An Isogeometric Analysis (IGA) laminar-energy model is developed using the Nutils open-source Python package. The developed analysis tool is used to study the effects of various important design parameters, such as the air-inlet, the gap-length, and the rotation speed on the heat transfer in an AFPM machine. It is observed that the convective heat transfer at the stator core is negatively affected by adding an air-inlet. However, the heat dissipation of the entire stator improves as convective heat transfer occurs within the air-inlet. Full article

(This article belongs to the Special Issue Advances in Computational Fluid Dynamics and Heat & Mass Transfer)

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8 pages, 295 KiB

Open AccessArticle

A Non-Standard Finite Difference Scheme for Magneto-Hydro Dynamics Boundary Layer Flows of an Incompressible Fluid Past a Flat Plate

by Riccardo Fazio and Alessandra Jannelli

Math. Comput. Appl. 2021, 26(1), 22; https://0-doi-org.brum.beds.ac.uk/10.3390/mca26010022 - 09 Mar 2021

Cited by 1 | Viewed by 1629

Abstract

This paper deals with a non-standard implicit finite difference scheme that is defined on a quasi-uniform mesh for approximate solutions of the Magneto-Hydro Dynamics (MHD) boundary layer flow of an incompressible fluid past a flat plate for a wide range of the magnetic parameter. The proposed approach allows imposing the given boundary conditions at infinity exactly. We show how to improve the obtained numerical results via a mesh refinement and a Richardson extrapolation. The obtained numerical results are favourably compared with those available in the literature. Full article

(This article belongs to the Special Issue Advances in Computational Fluid Dynamics and Heat & Mass Transfer)

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21 pages, 1062 KiB

Open AccessArticle

Quasi-Analytical Model of the Transient Behavior Pressure in an Oil Reservoir Made Up of Three Porous Media Considering the Fractional Time Derivative

by Fernando Alcántara-López, Carlos Fuentes, Fernando Brambila-Paz and Jesús López-Estrada

Math. Comput. Appl. 2020, 25(4), 74; https://0-doi-org.brum.beds.ac.uk/10.3390/mca25040074 - 01 Dec 2020

Cited by 1 | Viewed by 2075

Abstract

The present work proposes a new model to capture high heterogeneity of single phase flow in naturally fractured vuggy reservoirs. The model considers a three porous media reservoir; namely, fractured system, vugular system and matrix; the case of an infinite reservoir is considered in a full-penetrating wellbore. Furthermore, the model relaxes classic hypotheses considering that matrix permeability has a significant impact on the pressure deficit from the wellbore, reaching the triple permeability and triple porosity model wich allows the wellbore to be fed by all the porous media and not exclusively by the fractured system; where it is considered a pseudostable interporous flow. In addition, it is considered the anomalous flow phenomenon from the pressure of each independent porous medium and as a whole, through the temporal fractional derivative of Caputo type; the resulting phenomenon is studied for orders in the fractional derivatives in (0, 2), known as superdiffusive and subdiffusive phenomena. Synthetic results highlight the effect of anomalous flows throughout the entire transient behavior considering a significant permeability in the matrix and it is contrasted with the effect of an almost negligible matrix permeability. The model is solved analytically in the Laplace space, incorporating the Tartaglia–Cardano equations. Full article

(This article belongs to the Special Issue Advances in Computational Fluid Dynamics and Heat & Mass Transfer)

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19 pages, 599 KiB

Open AccessArticle

Effects of Convection on Sisko Fluid with Peristalsis in an Asymmetric Channel

by Naveed Iqbal, Humaira Yasmin, Bawfeh K. Kometa and Adel A. Attiya

Math. Comput. Appl. 2020, 25(3), 52; https://0-doi-org.brum.beds.ac.uk/10.3390/mca25030052 - 17 Aug 2020

Cited by 11 | Viewed by 2177

Abstract

This article deals with Sisko fluid flow exhibiting peristaltic mechanism in an asymmetric channel with sinusoidal wave propagating down its walls. The channel walls in heat transfer process satisfy the convective conditions. The flow and heat transfer equations are modeled and non-dimensionalized. Analysis has been carried out subject to low Reynolds number and long wavelength considerations. Analytical solution is obtained by using the regular perturbation method by taking Sisko fluid parameter as a perturbed parameter. The shear-thickening and shear-thinning properties of Sisko fluid in the present nonlinear analysis are examined. Comparison is provided between Sisko fluid outcomes and viscous fluids. Velocity and temperature distributions, pressure gradient and streamline pattern are addressed with respect to different parameters of interest. Trapping and pumping processes have also been studied. As a result, the thermal analysis indicates that the implementation of a rise in a non-Newtonian parameter, the Biot numbers and Brinkman number increases the thermal stability of the liquid. Full article

(This article belongs to the Special Issue Advances in Computational Fluid Dynamics and Heat & Mass Transfer)

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