Article
Engineering, Multidisciplinary
Hossam A. Nabwey, A. M. Rashad, P. Bala Anki Reddy, Shaik Jakeer, M. A. Mansour, T. Salah
Summary: The introduction of hybrid nanofluids has significant applications in various engineering and industrial fields such as low-pressure drop, wider absorption range, generator cooling, good thermal conductivity, nuclear system cooling, and heat exchangers. This study focuses on the unsteady MHD free convection flow of hybrid nanofluid in an inclined wavy permeable enclosure with a square obstacle, considering the effects of radiation and heat generation/absorption. The results show that parameters such as porosity, nanoparticle volume fraction, and Hartmann number have an impact on the average Nusselt number and distribution of isothermal lines.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Mathematics
Obai Younis, Milad Alizadeh, Ahmed Kadhim Hussein, Bagh Ali, Uddhaba Biswal, Emad Hasani Malekshah
Summary: This study investigates the numerical analysis of MHD-free convective heat transfer and its interaction with radiation over a heated flame inside a porous semicircular cavity loaded with SWCNTs-water nanofluid for the first time. The results indicate that decreasing the heated region length is beneficial for enhancing natural convection, and increasing parameters such as Ra, phi, Rd, and Da result in a proportional increase in Nu(out) while Ha shows an inverse relationship. Furthermore, an increase in radiation and Hartmann number leads to a 4% increase and 56.55% decrease, respectively, in the average Nu on the heated length. Additionally, a rise in radiation number causes a 73% increase in the average Nu of the heated flame, and increasing the Hartmann number results in an 82.4% decrement of the maximum velocity profile in the vertical direction.
Article
Multidisciplinary Sciences
Madiha Bibi, A. Zeeshan, M. Y. Malik
Summary: This paper examines the impact of MHD and viscous dissipation with joule heating on the convective stretching flow of dusty tangent hyperbolic fluid in 3D. The findings suggest that various parameters such as the power law index, magnetic field strength, Weissenberg effect, dust particle concentration, and unsteadiness parameter can influence the flow of fluid and solid granules.
SCIENTIFIC REPORTS
(2022)
Article
Mechanics
M. S. Asmadi, R. Md. Kasmani, Z. Siri, H. Saleh
Summary: This study investigates natural convection heat transfer inside a U-shaped enclosure using copper-alumina/water hybrid nanofluid with various thermal profiles. The results show that constant heating profile has the best heat dissipation performance, while sinusoidal thermal profile performed the worst.
Article
Engineering, Multidisciplinary
Hossam A. Nabwey, A. M. Rashad, Waqar A. Khan, Sumayyah Alshber
Summary: This study investigates the unsteady MHD free convection flow and heat transfer in an inclined U-shaped cavity filled with Cu-water nanofluid. The effects of various parameters, such as heat source length, Hartmann number, nanoparticle volume fraction, heat source location, and aspect ratio, on the mean heat transfer rate are examined. The results show that the mean heat transfer rate decreases with heat source length and Hartmann number, but increases with heat source location and nanoparticle volume fraction. Furthermore, the mean heat transfer rate increases with aspect ratio.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Muhammad Bilal, Hamna Arshad, Muhammad Ramzan, Zahir Shah, Poom Kumam
Summary: This research focuses on investigating the thermal performance and temperature distribution of a hybrid nanofluid in a horizontal channel through numerical simulations and experiments. The results demonstrate that the hybrid nanofluid exhibits a more significant thermal enhancement compared to a simple nanofluid, with single-wall nanotubes having a greater impact on temperature.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Multidisciplinary
Rowsanara Akhter, Mohammad Mokaddes Ali, M. A. Alim
Summary: This investigation explores the fluid flow and temperature behaviors, as well as entropy generation, of hybrid nanofluid in a partially heated cavity saturated by porous medium in the presence of an external magnetic field. The results show that the magnetic field strength, amount of hybrid nanoparticles, and cavity permeability have a significant influence on the fluid flow, temperature, and local entropy generation.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Navid Alipour, Bahram Jafari, Kh. Hosseinzadeh
Summary: To address the challenge of thermal performance and heat loss in energy conversion systems, this study simulated a trapezoidal cavity with a wavy top wall containing water/ethylene glycol GO-Al2O3 nanofluid using the Galerkin finite element method. The effects of physical parameters, such as porosity, thermal radiation, magnetic field angle, Rayleigh number, and Hartmann number, on thermal performance and fluid flow were investigated. The optimized values for these parameters were determined to be 1214.46, 2.86, 0.63, 0.24, and 59.35, respectively. By applying RSM and Taguchi integration, the highest average Nusselt number of 3.07 was achieved, indicating improved thermal performance.
SCIENTIFIC REPORTS
(2023)
Article
Energy & Fuels
Zihao Yuan, Yinkuan Dong, Zunlong Jin
Summary: In this study, the natural convection and entropy generation of a semicircular cavity containing a heat source under a magnetic field were studied using the single-phase lattice Boltzmann method. It was found that the Rayleigh number, Hartmann number, and magnetic field inclination have significant effects on the average Nusselt number and entropy generation of the semicircular cavity.
Article
Thermodynamics
Soufiane Nouari, Elhafad Bara, Zakaria Lafdaili, Sakina EL-Hamdani, Abdelaziz Bendou, Hicham Doghmi
Summary: In this study, the impact of oscillatory movement on heat transfer within a double periodic lid-driven cubic enclosure filled with copper-water nanofluid was investigated. It was found that decreasing the Richardson number with low lids frequency can greatly enhance heat transfer. Swapping from Case 2 to Case 1 leads to a 29.74% increase in the maximum average Nusselt number. At a high Richardson number, using high lids frequency increases heat transfer rate compared to using low lids frequency (an enhancement of 4.32% for Case 1 and 3.63% for Case 2). The best heat transfer rate was achieved for Case 1 when the lids move positively, transporting the cold flow to the hot side. Increasing the concentration of nanoparticles improves heat transfer. This study contributes to understanding the problem of mixed convection in a cubic enclosure with oscillatory walls.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Multidisciplinary Sciences
Ebrahem A. A. Algehyne, Anwar Saeed, Muhammad Arif, Muhammad Bilal, Poom Kumam, Ahmed M. M. Galal
Summary: This article examines the impact of magnetohydrodynamics (MHD) on the flow of MgO-Ag/water-based hybrid nanoliquid with motile microorganisms, considering slip effects and activation energy on the Riga plate. Furthermore, the presence of a uniform heat source/sink and the thermophoresis effect are addressed. The obtained non-linear system of governing equations is solved numerically using the parametric continuation method (PCM). The analysis highlights the heat transfer rate and the impact of slip conditions on velocity, energy, and mass profiles.
SCIENTIFIC REPORTS
(2023)
Article
Physics, Multidisciplinary
P. Sudarsana Reddy, P. Sreedevi
Summary: In this study, numerical investigation was conducted on the entropy generation, flow, and heat transport features of a hybrid nanofluid, with copper and silver nanoparticles suspended in Ethylene Glycol as the common fluid. The study explored the effects of various parameters on the scatterings of isotherms, streamlines, and entropy generation through graphs, showing that silver nanoparticles have a lower temperature gradient than copper nanoparticles. The results also indicated different rates of heat transfer enhancement for silver and copper nanoparticles suspended in the base fluid.
EUROPEAN PHYSICAL JOURNAL PLUS
(2021)
Article
Chemistry, Multidisciplinary
Apichit Maneengam, Tarek Bouzennada, Aissa Abderrahmane, Kamel Guedri, Wajaree Weera, Obai Younis, Belgacem Bouallegue
Summary: This study investigates the influence of the lid-driven top wall and the waviness of the side walls on the mixed convection heat transfer, flow behavior, and entropy generation of a hybrid nanofluid. The results show that the magnetic force plays a significant role in the thermal and flow behavior of the working fluid, and the undulation number of the wavy side walls has a strong impact on the heat transfer rate and irreversibility.
Article
Mechanics
Aneela Bibi, Hang Xu
Summary: This article investigates fluid dynamics and heat transfer properties in a trapezoidal enclosure containing a heated cylindrical object. It explores the interaction of multiple physical processes and analyzes the governing equations numerically. The findings demonstrate the various factors influencing the thermal and mass transfer in the enclosure, and the effectiveness of the multiple expression programming (MEP) technique in predicting heat transfer behavior.
Article
Multidisciplinary Sciences
Abid. A. Memon, M. Asif Memon, Amsalu Fenta
Summary: This article investigates the fluid flow and heat transfer characteristics of a nanofluid in both deep and shallow cavities. The study utilizes the Corcione model to consider various factors such as viscosity, conductivity, nanoparticle size, temperature, and Reynolds number. The simulation is conducted using the Navier-Stokes and energy equations in two dimensions, along with COMSOL 5.6 software. The results show that the temperature distribution in the cavity is circular, with the average temperature decreasing as the volume fraction of copper increases. However, both the Reynolds number and copper volume fraction enhance the average Nusselt number, indicating improved heat transfer along the cavity's middle line. The percentage change in the average Nusselt number decreases with increasing aspect ratio, indicating better conduction.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Ravishankar Sathyamurthy, Abd Elnaby Kabeel, Ali Chamkha, Hemanth Arun Kumar, Hariprasath Venkateswaran, Athikesavan Muthu Manokar, Ramani Bharathwaaj, Sathiyaseelan Vasanthaseelan
Summary: This study conducted theoretical and experimental research on tubular solar still with and without fins, and found that the efficiency is higher with fins, while the irreversibility rate from the basin is higher without fins. Exergy analysis showed that the maximum exergy efficiency is 11.8% from the TSS with fins and 10.6% from the TSS with a flat absorber.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Mathematics, Applied
Darya S. Loenko, Aroon Shenoy, Mikhail A. Sheremet
Summary: This research focuses on the numerical analysis of natural convection in a cavity filled with a non-Newtonian nanosuspension under the influence of a heat-generating wall section. The study shows that adding nanosized particles to heat transfer liquids can enhance heat removal from heated elements in electronic devices, and different boundary conditions result in different temperature patterns.
MATHEMATICAL METHODS IN THE APPLIED SCIENCES
(2023)
Article
Chemistry, Physical
Avinash Alagumalai, Caiyan Qin, K. E. K. Vimal, Evgeny Solomin, Liu Yang, Ping Zhang, Todd Otanicar, Alibakhsh Kasaeian, Ali J. Chamkha, Mohmammad Mehdi Rashidi, Somchai Wongwises, Ho Seon Ahn, Zhao Lei, Tabassom Saboori, Omid Mahian
Summary: Despite significant efforts in the field of nanofluids over the past two decades, their widespread commercial application has been hindered by various controllable and uncontrollable barriers. Long-term stability issue is identified as the main driver in the effective implementation of nanofluids at commercial scale. Research in this direction may help address the most influential barriers to nanofluid market uptake.
Article
Computer Science, Interdisciplinary Applications
Tahar Tayebi, Ali J. Chamkha, Hakan F. Oztop, Lynda Bouzeroura
Summary: This study conducted a comprehensive numerical analysis of the local thermal non-equilibrium effects in a horizontal elliptical porous annulus saturated with nanofluid using finite volume technique. The results indicated that different porous medium properties can influence the local thermal non-equilibrium effects.
MATHEMATICS AND COMPUTERS IN SIMULATION
(2022)
Article
Thermodynamics
Alexander Nee, Ali J. Chamkha
Summary: This study introduces a hybrid lattice Boltzmann scheme for three-dimensional heat transfer, including conduction, natural convection, and radiation. The study analyzes temperature and flow behavior under different parameters and finds that the 3D model is more accurate when studying radiation heat transfer.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Engineering, Mechanical
Kotha Gangadhar, R. Edukondala Nayak, M. Venkata Subba Rao, Ali J. Chamkha
Summary: This paper examines the mechanism of radiative Walter's B nanofluid on a rotational cone under magnetic regime, including the theoretical and practical implications of time-dependent fluid flow caused by cone rotation in engineering and applied sciences, as well as the characteristics of thermophoresis, Brownian motion, and chemical reactions. Self-similar solutions are obtained and the numerical result of a reduced nonlinear system is obtained using the Runge-Kutta-Fehlberg fourth-fifth procedure. Comparisons with previously published material are made to verify the outcome. The conflicting influences of the Brownian motion parameter on heat and mass transfer rates, as well as temperature and concentration fields, are found. The presence of chemical reactions may be more beneficial in developing reaction processes.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Engineering, Mechanical
K. Gangadhar, M. Venkata Subba Rao, D. Naga Bhargavi, Ali J. Chamkha
Summary: This research focuses on the hydrothermal characteristics of magnetohydrodynamic nanofluid flow over a slippery permeable bended surface. The study reveals that the concentration gradient of nanoparticles is affected by Brownian motion and thermophoretic force. The results also show that increasing magnetic parameter values decrease the velocity field magnitude and pressure in the boundary layer.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Mohammad Reza Shahnazari, Mir Hedayat Moosavi, Ali J. Chamkha
Summary: The study focuses on the steady-state fully developed fluid flow in a channel filled with porous media, utilizing well-known models such as Darcy's, Brinkman's, and Brinkman-Forchheimer's laws. The analytical solution for flow models and estimation of convective heat transfer coefficient are provided, along with evaluation of the impacts of parameters on the Nusselt number. Results show a downward trend in Nusselt number as Forchheimer coefficient increases, reaching asymptotic values at smaller Darcy numbers.
JOURNAL OF NANOFLUIDS
(2022)
Article
Thermodynamics
Dipak Kumar Mandal, Nirmalendu Biswas, Nirmal K. Manna, Rama Subba Reddy Gorla, Ali J. Chamkha
Summary: This study numerically examines the influence of various geometric parameters on the thermal performance of a novel W-shaped porous cavity undergoing hybrid nanofluid-based magnetohydrodynamic mixed convection. The results show that an increase in the bottom undulation height improves the thermal energy transfer despite the reduction of fluid volume. The overall thermal energy transport is improved by increasing Reynolds number, Richardson number, and Darcy number, while it is suppressed by increasing Hartmann number.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2023)
Article
Engineering, Mechanical
Bhupendra Kumar Sharma, Umesh Khanduri, Nidhish K. Mishra, Ali J. Chamkha
Summary: This study numerically investigates the combined effects of Arrhenius activation and microorganisms on unsteady flow through a porous medium with thermophoresis and Brownian motion. The results have important implications for geothermal engineering, energy conversion, disposal of nuclear waste material, as well as applications in medical fields such as gene therapy and drug delivery systems.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART E-JOURNAL OF PROCESS MECHANICAL ENGINEERING
(2023)
Article
Thermodynamics
Hussan Zeb, Hafiz A. Wahab, Umar Khan, Ali J. Chamkha
Summary: This study analyzed the characteristics of heat transfer in non-Newtonian ferrofluids produced by stretchable sheet and investigated the effects of Arrhenius activation energy and magnetic dipole. By applying a similarity ansatz and Runge-Kutta method, the computational solution for the governing system was determined. The influence of beneficial physical parameters on momentum, energy, and concentration profiles was shown through graphs.
Article
Thermodynamics
Shreedevi Kalyan, Ashwini Sharan, Ali J. Chamkha
Summary: This article examines the effect of heat and mass transfer flow of two immiscible Jeffrey fluids in a vertical channel. The impact of different physical parameters on the flow and distribution of velocity, temperature, and concentration is illustrated graphically.
Article
Thermodynamics
Alexander Nee, Bubryur Kim, Ali J. Chamkha
Summary: The present study focuses on the numerical analysis of heat transfer and fluid flow patterns in a three-dimensional problem formulation. A hybrid mathematical model is built, and the equations are solved using MATLAB. The results show that the emissivity of the vertical walls can be used as a tool to control thermal and flow behavior.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Nanoscience & Nanotechnology
V. Rajesh, M. Kavitha, Ali J. Chamkha
Summary: This article examines the effects of MHD and variable surface temperature on the unsteady natural convection flow of a hybrid nanofluid on a moving vertical cylinder using numerical simulations. The results provide valuable insights for thermal flow processing of magnetic nanomaterials.
JOURNAL OF NANOFLUIDS
(2022)
Article
Mathematics, Applied
Alexander Nee, Ali J. Chamkha
Summary: This paper presents a hybrid lattice Boltzmann solver for turbulent buoyancy-driven flow coupled with surface thermal radiation. The accuracy and robustness of the hybrid approach are assessed using numerical and experimental data. The study finds that increasing surface radiation enhances the overall temperature and can lead to the formation of convective plumes. The overall heat transfer rate increases by approximately 5% when surface thermal radiation is taken into account.
ADVANCES IN APPLIED MATHEMATICS AND MECHANICS
(2022)
