Article
Computer Science, Information Systems
Zehba A. S. Raizah, Abdelraheem M. Aly
Summary: This study simulated natural convection flow in an H-shaped enclosure filled with a nanofluid using ISPH method. The research found that increasing the length of the heated partitions enhances the velocity field and temperature distributions, while a higher Rayleigh number increases fluid velocity and heat transfer. The presence of a porous layer on the right side causes a high resistance force.
CMC-COMPUTERS MATERIALS & CONTINUA
(2021)
Article
Thermodynamics
Zehba Raizah, Mitsuteru Asai, Abdelraheem M. Aly
Summary: The study applied the ISPH method to simulate natural convection flow in a Y-shaped enclosure with an inner heated Y-fin and nanofluid. It was found that the height of the Y-fin, Rayleigh number, and nanofluid concentration significantly affect heat transfer and fluid flow inside the enclosure. Increasing Rayleigh number enhances buoyancy force and temperature distributions, while higher nanofluid concentrations reduce fluid flow strength.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Mechanics
Abdelraheem Mahmoud Aly, Ehab Mahmoud Mohamed, Noura Alsedais
Summary: The text describes the simulation of natural convection resulting from the uniform circular rotation of a paddle wheel in a cross-shaped porous cavity filled with Al2O3-H2O using the ISPH method. The results show that increasing the length of the paddle wheel increases heat transfer and nanofluid movements within the cavity, while increasing the Rayleigh number improves heat transfer and nanofluid speed within the cavity.
ARCHIVE OF APPLIED MECHANICS
(2021)
Article
Thermodynamics
Abdelraheem M. Aly, Ehab Mahmoud Mohamed
Summary: This study investigates the impacts of circular cylinder motion on natural convection flow inside an X-shaped cavity filled with Al2O3-water nanofluid. The study found that increasing the length of the hot source enhances temperature distributions and fluid flow, while a homogeneous porous medium slows down flow speed in the top layer of the cavity. The ISPH method effectively simulated the motion of cylinders in different thermal conditions within the X-shaped cavity.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Thermodynamics
Shaik Subhani, Rajendran Senthil Kumar
Summary: This study numerically investigates the flow and heat transfer characteristics within a square enclosure with a heated circular obstacle and winglets at different angles, finding that the heat transfer is maximized when the winglet is placed at 45°.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
Waleed M. Abed, Amer Al-damook
Summary: A numerical model was used to simulate natural convection heat transfer in a two-dimensional square enclosure filled with nanofluid and saturated with porous media. Multiple parameters, such as aspect ratio, nanoparticle volume fraction, and porosity of metal foam, were systematically analyzed to understand their impact on natural convection heat transfer. The study also adopted a multi-objective optimal design approach to achieve the highest Nusselt number and convection heat transfer rate.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Thermodynamics
A. Sattar Dogonchi, S. R. Mishra, Ali J. Chamkha, M. Ghodrat, Yasser Elmasry, Hesham Alhumade
Summary: This article investigates the heat transfer, entropy generation, and fluid flow behavior inside a porous enclosure using a numerical method called FEM for a square cylinder filled with magnetic nanoliquid. The study found that entropy generation increases with rising Hartmann number and Rayleigh number, leading to velocity gradient overshooting within the enclosure. Results show different heat transfer and fluid flow characteristics for varying parameters combinations.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Zehba A. S. Raizah, Abdelraheem M. Aly, Sameh E. Ahmed
Summary: The flow and heat transfer of nanofluid in a V-shaped cavity were analyzed using the incompressible smoothed particle hydrodynamic (ISPH) scheme. The study focused on a nanofluid-filled V-shaped cavity with a partial layer heterogeneous porous medium. Results showed that the highest heat transfer efficiency was achieved with horizontal heterogeneous porous medium in the V-shaped cavity, while the lowest was with homogeneous porous medium. Increasing the Rayleigh number increased buoyancy force and enhanced convective heat transfer.
AIN SHAMS ENGINEERING JOURNAL
(2021)
Article
Engineering, Multidisciplinary
Abdelraheem Mahmoud Aly, Abdallah Aldosary, Ehab Mahmoud Mohamed
Summary: The study found that increasing wave amplitude enhances heat and mass transfer, and increases flow speed in a cavity; adding more copper concentration reduces the maximum stream function; an increase in Hartman parameter reduces double-diffusion and the maximum of stream function.
ALEXANDRIA ENGINEERING JOURNAL
(2021)
Article
Thermodynamics
Shantanu Dutta, Sukumar Pati, Laszlo Baranyi
Summary: The study shows that the average Nusselt number increases with the volume fraction of nanoparticles and decreases with the Hartmann number. In addition to the influence of fluid properties and external conditions, the geometric variation of the enclosure volume also plays a role in altering the heat transfer rate.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Shayan Naseri Nia, Faranak Rabiei, M. M. Rashidi
Summary: This study utilized the Lattice Boltzmann method to numerically simulate the natural convection heat transfer of Cu-water nanofluid in an L-shaped enclosure with curved boundaries. The investigation found that the curved boundaries have effects on natural convection in different parameter ranges, with the top curved boundary causing a notable increase in Nusselt number values. The study also compared the results of curved L-shape models to rectangular L-shape models and validated the curved boundary LBM simulation with existing studies.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Engineering, Mechanical
Krishno D. Goswami, Anirban Chattopadhyay, Swapan K. Pandit
Summary: This study presents a numerical simulation of steady thermogravitational convection of Cu-Al2O3 water-hybrid magneto-nanofluid in a novel shaped enclosure. The results show that the combination of heater locations and geometry has a significant impact on the transport phenomena, and Cu-Al2O3 hybrid nanoparticles play a crucial role in enhancing heat transfer.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2022)
Article
Thermodynamics
Rahul Ryan Savio, Subhani Shaik, Rajendran Senthil Kumar
Summary: The study investigated the impact of changing the orientation of a square cylinder around its central axis on heat flow and flow characteristics, and found that a 45-degree rotation angle provides the most optimal and efficient means of heat transfer at higher Rayleigh numbers.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
N. Keerthi Reddy, Aejung Yoon, Sankar Mani, H. A. Kumara Swamy
Summary: This study numerically investigates the potential of using internal baffles and nanofluids to enhance or suppress heat transport in a vertical annulus. The results show that the dimensions of the baffles and the shape of the nanoparticles have a significant impact on the convective flow and heat transfer characteristics.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Physics, Multidisciplinary
S. Parthiban, V. Ramachandra Prasad
Summary: This article investigates the flow of incompressible magnetohydrodynamic hybrid nanofluid through a heated enclosure containing a non-Darcy porous medium. The study examines the influence of various parameters on temperature contours, streamlines, and Nusselt number distributions. The results reveal a linear relationship between Rayleigh number and Nusselt number, as well as the influence of Hartmann number on local Nusselt number trends.
EUROPEAN PHYSICAL JOURNAL PLUS
(2022)
Article
Thermodynamics
Abdelraheem M. Aly, Weaam Alhejaili
Summary: This study experimentally investigated the thermal selective condensation process of an nonisothermal phase change heat storage drum. The results showed that the dryness fraction plays an important role in the thermal selective condensation process when the relative humidity is 1. For every 1% increase in dryness fraction, the condensation effect of the heat storage drum will significantly increase under the same conditions.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2022)
Article
Thermodynamics
Sadia Siddiqa, Sahrish Batool Naqvi, Muhammad Azam, Abdelraheem M. M. Aly, Md. Mamun Molla
Summary: Turbulent convective flow and heat transfer in a cubic cavity is studied using large-eddy simulation and conjugate heat transfer. It is found that turbulent heat transfer significantly alters the flow field, leading to non-uniformity along the vertical direction. Various streaky and coherent turbulent structures are observed near the walls and in the surrounding regions of the cavity.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Physics, Multidisciplinary
Abdelraheem M. M. Aly, Zehba Raizah, Noura Alsedais
Summary: This study focuses on numerical simulations of thermosolutal convection in a cavity with a circular rotation of a dual wavy shape and filled with a nanofluid. The findings have significant implications for engineering designs involving rotating objects and the use of nanofluids.
WAVES IN RANDOM AND COMPLEX MEDIA
(2023)
Article
Mathematics, Applied
Sameh E. Ahmed, Wael Al-Kouz, Abdelraheem M. Aly
Summary: Numerical treatments based on the finite element method are conducted to study the entropy generation and convective process in inclined T-shaped enclosures using nano-encapsulated phase change materials. Different designs and parameters are considered, and it is found that increasing the fusion temperature shifts the melting-solidification zones.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2023)
Article
Physics, Applied
Weaam Alhejaili, Abdelraheem M. Aly
Summary: The fractional time derivative of the ISPH method is used to address thermal radiation in thermosolutal convection in a porous cavity with NEPCMs. A study on the rotational velocities of two rods in a cavity of connected circular cylinders is presented. Controlling heat-mass transfer and velocity magnitude in different materials improves energy efficiency. Factors such as thermal radiation, fusion temperature, Rayleigh number, hot source length, Darcy number, and fractional order parameter are considered. The study highlights the influence of thermal/solutal conditions on dual convection flow and heat capacity contour.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Thermodynamics
Abdelraheem M. Aly, Noura Alsedais
Summary: This paper investigates the conformable fractal approaches of unsteady natural convection in a partial layer porous H-shaped cavity suspended by nano-encapsulated phase change material (NEPCM) using the incompressible smoothed particle hydrodynamics method. The research findings show that the length of the hot source, the Rayleigh number, and the fusion temperature play important roles in controlling the heat capacity contours within the H-shaped cavity. Increasing the thermal radiation parameter decreases heat transfer and changes the heat capacity contours. The velocity field is strongly enhanced by an increase in the Rayleigh number, while increasing the Hartmann number reduces the velocity field within the H-shaped cavity.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Thermodynamics
Noura Alsedais, Amal Al-Hanaya, Abdelraheem M. Aly
Summary: This study investigates the effects of a magnetic field on bioconvection flow within a porous annulus filled with microorganisms and nano-encapsulated phase change materials. The modified ISPH method based on the time-fractional derivative is used to solve the governing equations in Lagrangian dimensionless forms. The simulations reveal that increasing the bioconvection Rayleigh number Ra-b enhances the velocity field significantly. The intensity and location of the phase zone change in response to variations in the fusion temperature theta(f). The number of embedded cylinders N-Cylinders plays a significant role in the cooling processes, with a reduction of almost 33.3% in the maximum velocity field as N-Cylinders increases from 1 to 4.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Engineering, Mechanical
Fawzia Awad, Zehba Raizah, Abdelraheem M. Aly
Summary: This work utilizes the ISPH method for simulating the impact flow of a circular cylinder on a free surface flow including porous media. The ISPH method allows for tracking the large deformation of the free surface caused by the cylinder's entry into the water. The study validates the ISPH scheme through comparisons with experimental results for the free-falling of a circular cylinder and pressure evaluation, confirming its accuracy and usefulness in modeling the impact processes.
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2023)
Article
Thermodynamics
Abdelraheem M. Aly, Noura Alsedias, Mitsuteru Asai
Summary: The ISPH method is used to simulate the diffusion of solid particles in a nanofluid flow during the dual rotation of two circular cylinders inside a cavity. The novelty of this work lies in simulating the dual rotation of circular cylinders with the dispersion of solid particles under the influence of Soret-Dufour numbers. The major outcomes reveal that the interaction between solid particles and nanofluid flow is enhanced with increasing Soret/Dufour numbers, and the interaction process is reduced by increasing the Hartmann number. The radius of a circular cylinder affects the heat/mass transport within a cavity due to variations in the total number of solid particles. The values of Nusselt and Sherwood numbers are influenced by physical factors.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Mathematics, Applied
Abdelraheem M. Aly, Noura Alsedais, Ehab Mohamed Mahmoud
Summary: This paper investigates the thermo-solutal convection problem of oriented fins inside a cavity mobilized by a nanofluid. It is found that the expanded fins length enhances the heat/mass transfer rate and overall heat/mass transfer. The nanofluid velocity is lower at an expanded fins length when adding extra nanoparticles, increasing the Hartmann number, and under cold condition. Adding extra nanoparticles to 20% slows down the nanofluid velocity by 55.28%. Increasing the Soret number to two enhances the nanofluid velocity by 69.47%. The circular rotation of an inner shape changes the patterns of nanofluid movements and circulations of temperature and concentration within a cavity. The magnetic field effectively reduces the nanofluid velocity and heat/mass transmission in a cavity at an extra Hartmann number.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2023)
Article
Engineering, Multidisciplinary
Zehba Raizah, Abdelraheem M. Aly
Summary: This paper uses the ISPH method to simulate the dual diffusion of NEPCM in an annulus. The novelty lies in simulating the double diffusion within a complex shape composed of an annulus between two circular cylinders mounted on rectangles. The simulations show that different boundary conditions affect the concentration and temperature, and the position of the phase change zone varies with variable boundary conditions and fusion temperature. The mean Nusselt and Sherwood numbers improve with an increase in the radius of the internal circular cylinder and Rayleigh numbers.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Physics, Multidisciplinary
Abdelraheem M. Aly, Zehba Raizah, Noura Alsedias
Summary: The study numerically simulates the thermosolutal convection of circular rotation of dual circular cylinders inside a combined cavity. The connections among the circular rotation of solid cylinders containing nanofluid plus porous media are modeled by the ISPH method. The findings show that the addition of nanoparticles decreases the nanofluid velocity, while increasing the buoyancy parameter accelerates the nanofluid movements and enhances the mean Nusselt number Nu. The variations of porous levels and Rayleigh numbers also affect the nanofluid flow and thermosolutal convection within the combined cavity.
EUROPEAN PHYSICAL JOURNAL PLUS
(2023)
Article
Thermodynamics
Abdelraheem M. Aly, Roland W. Lewis, Noura Alsedias
Summary: The present work investigates the influences of thermal radiation and magnetic field on the double diffusion of solid phase in a novel cavity. The improved incompressible smoothed particle hydrodynamics (ISPH) method is used to solve the time-fractional governing equations. The main findings indicate that the fractional time-derivative parameter and Rayleigh number play important roles in the heat-mass transfer and nanofluid development.
JOURNAL OF POROUS MEDIA
(2023)
Article
Mathematics, Applied
Weaam Alhejaili, Mohammed. K. Elboree, Abdelraheem M. Aly
Summary: This work investigates the multi-rogue-wave solutions for the Kadomtsev-Petviashvili (KP) equation in two (3+1)-dimensional extensions. The symbolic computation approach and special polynomials developed from the Hirota bilinear equation are utilized. The first, second, and third-order rogue wave solutions for these equations are derived. The physical properties and interactions of multiple rogue waves are analyzed and visualized. The obtained results are significant for understanding the dynamics of higher-order rogue waves in the deep ocean and nonlinear optical fibers.
Article
Physics, Multidisciplinary
Abdelraheem M. Aly, Zehba Raizah, Hijaz Ahmed, Amal M. Al-Hanaya, Noura Alsedias
Summary: This study simulates double diffusion in a circular cylinder over a rectangular cavity using the incompressible smoothed particle hydrodynamics (ISPH) method. The effects of various parameters on heat/mass transport and velocity field are investigated. The results show that the porous medium reduces temperature and concentration, while decreasing the Darcy parameter suppresses the nanofluid velocity. Increasing the Ra and N parameters enhances heat/mass transmission and nanofluid velocity. Additional nanoparticles concentration reduces nanofluid velocity.
