Article
Multidisciplinary Sciences
Munawar Abbas, Nargis Khan, M. S. Hashmi, Jihad Younis
Summary: This study investigates the thermal energy characteristics of hybrid nanofluid flow over an infinite disc in a permeable medium with variable thermal conductivity and viscosity. The mathematical model considers the impacts of activation energy, heat source, thermophoretic particle deposition, and microorganisms. The findings show that the Marangoni convection parameter has a significant influence on various flow characteristics.
SCIENTIFIC REPORTS
(2023)
Article
Thermodynamics
Liaquat Ali Lund, Zurni Omar, Jawad Raza, Ilyas Khan
Summary: This study investigates the heat transfer characteristics, stability analysis, and multiple solutions of magnetohydrodynamic flow of hybrid nanofluid caused by nonlinear shrinking/stretching surface under high temperatures. It is found that the velocity of the hybrid nanofluid decreases in the first solution and increases in the second solution as both the magnetic and permeability coefficient parameters increase. Furthermore, dual solutions are found to exist only on the shrinking surface under specific parameter values in the case of suction.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Thermodynamics
Saeed Dinarvand, Seyed Mehdi Mousavi, Mohammad Yousefi, Mohammadreza Nademi Rostami
Summary: This study investigates the steady laminar magnetohydrodynamics flow of a magnesium oxide-silver/water hybrid nanofluid along a horizontal slim needle with thermal radiation, considering dual solutions. The results show that the magnetic parameter and the second nanoparticle's mass limit the range of the velocity ratio parameter for which the solution exists, and the magnetic parameter leads to a decrease in engineering quantities of interest.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Engineering, Multidisciplinary
Muhammad Yasir, Abdul Hafeez, Masood Khan
Summary: The research focuses on studying the flow characteristics and heat transfer of a permeable hybrid nanofluid on a stretching/shrinking surface. Numerical simulations show that the hybrid nanofluid exhibits more efficient heat conduction compared to simple nanofluids due to its enhanced thermal properties. The results also indicate that Eckert number does not affect boundary layer separation, while higher values of the suction parameter may influence heat transfer performance.
AIN SHAMS ENGINEERING JOURNAL
(2022)
Article
Thermodynamics
Har Lal Saran, Chetteti RamReddy
Summary: This paper investigates the flow and heat transfer induced by an exponentially shrinking sheet with Ti-alloy & MWCNT hybrid nanofluid. It focuses on the flow separation of the hybrid nanofluid with an inclined magnetic field, thermal buoyancy force, and Joule heating effect. The mathematical model for the hybrid nanofluid is formulated using the Tiwari and Das model. Multiple solutions are found for the problem, and the stability test reveals that only the first solution is stable. The study provides important findings regarding the velocity, temperature, skin friction coefficient, rate of heat transfer, and thickness of momentum and thermal boundary layers.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Thermodynamics
Ioan Pop, Mohammadreza Nademi Rostami, Saeed Dinarvand
Summary: The study focuses on the laminar magnetohydrodynamics mixed convection stagnation-point flow of an alumina-graphene/water hybrid nanofluid with spherical nanoparticles over a vertical permeable plate, with dual similarity solutions. The results show that the magnetic parameter and wall permeability parameter widen the range of buoyancy parameter for solution existence, while the second nanoparticle mass has the opposite effect. Mass suction at the plate surface and the magnetic parameter reduce the thickness of both the hydrodynamic and thermal boundary layers.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Mathematics
Umair Khan, Iskandar Waini, Aurang Zaib, Anuar Ishak, Ioan Pop
Summary: Recent advancements in nanotech have paved the way for the development of a superior coolant called nanofluid, which has significant applications in various industries and engineering technologies. This research numerically examines the impact of thermophoretic and viscous dissipation on the mixed convective flow of hybrid nanofluid through an inclined permeable moving flat plate with a magnetic field. The study discusses the effects of different parameters on velocity profiles, shear stress, temperature distribution, heat transfer, concentration distribution, and mass transfer. It is found that opposing and assisting flows lead to different solutions, and the temperature distribution increases with the radiation parameter while decreasing the velocity and concentration profiles.
Article
Mathematics
Rusya Iryanti Yahaya, Norihan Md Arifin, Ioan Pop, Fadzilah Md Ali, Siti Suzilliana Putri Mohamed Isa
Summary: This study presents a mathematical model for the unsteady, two-dimensional mixed convection stagnation point flow over a Riga plate. The model incorporates convective boundary conditions, time-dependent derivatives, mixed convection, radiation effects, and the Grinberg term. By using similarity transformations, ordinary differential equations (ODEs) are derived from the partial differential equations (PDEs) of the flow model. The numerical results suggest that increasing the modified Hartmann number, mixed convection parameter, and unsteadiness parameter can enhance the heat transfer performance in this flow model. This study provides valuable insight into fundamental transport phenomena and offers valuable information on controlling the boundary layer flow pattern gradients.
Article
Mathematics
Francis Peter, Paulsamy Sambath, Seshathiri Dhanasekaran
Summary: This study investigates the impact of magnetohydrodynamics (MHD) and thermal radiation on the flow of non-Newtonian hybrid nanofluids over a plumb cone/plate surface. It also examines how heat and mass transfer are affected by a fluid containing microorganisms. The results demonstrate that the addition of MHD and thermal radiation improves the diffusion of microorganisms, thereby enhancing heat and mass transfer rates. The reliability of the conclusions is confirmed through comparative analysis with prior research.
Article
Mechanics
C. M. Mohana, B. Rushi Kumar
Summary: This study investigates the flow and convective heat transfer characteristics of cadmium telluride and graphite nanoparticle suspensions in water over a bidirectionally stretching sheet using the Darcy-Forchheimer model. The results show that the type, volume fraction, and shape of nanoparticles have a significant impact on the flow and heat transfer performance.
Article
Mathematics
Iskandar Waini, Anuar Ishak, Ioan Pop
Summary: This paper examines the influence of hybrid nanoparticles on flow and heat transfer over a permeable non-isothermal shrinking surface, considering radiation and MHD effects. Results show that heat transfer rate increases with magnetic parameter and radiation parameter, and is higher on isothermal surfaces.
Article
Thermodynamics
G. P. Ashwinkumar, S. P. Samrat, N. Sandeep
Summary: This paper examines the impact of nonlinear thermal radiation on 2-D magnetohydrodynamic flow of hybrid nanoliquid across two distinct geometries and discusses the resulting flow and thermal distributions. The results show that nonlinear thermal radiation enhances thermal distributions and decreases heat transfer rates, with differences observed between flow over a cone and flow over a plate. Additionally, the thermal transport rate is significantly higher for flow above a cone compared to flow over a plate.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Physics, Multidisciplinary
Y. Khan, Afraz Hussain Majeed, Muhammad Afraz Rasheed, A. Alameer, Hasan Shahzad, Sadia Irshad, N. Faraz
Summary: This study investigates the flow attributes of micro-polar non-Newtonian liquid over stretching/shrinking surfaces, and examines the effects of flow parameters such as velocity, temperature, and concentration distribution. The research findings were compared with previous results, and it was observed that the local skin friction coefficient and local Nusselt number amplitude increase with the increase in micro-pole parameters.
FRONTIERS IN PHYSICS
(2022)
Article
Thermodynamics
Azad Hussain, Ali Hassan, Qasem Al Mdallal, Hijaz Ahmad, Aysha Rehman, Mohamed Altanji, Mubashar Arshad
Summary: This study examines the heat transfer properties of magnetohydrodynamic hybrid nanofluid with radiation, finding that Nusselt number increases significantly at lower pressure values while Sherwood number decreases at higher buoyancy parameters. The hybrid nanofluids can enhance the performance of heat exchangers and other equipment, potentially reducing production costs.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Mechanics
Liaquat Ali Lund, Ubaidullah Yashkun, Nehad Ali Shah
Summary: This research investigates the stable boundary layer problem in magnetohydrodynamics (MHD) and its application in heat transfer. The study shows that the skin friction coefficient increases in the positive direction of lambda as the volume fraction of copper increases. The effect of viscous dissipation on the temperature profile has a similar rising trend in the z-direction.
Article
Physics, Multidisciplinary
A. Bhattacharyya, R. Sharma, S. M. Hussain, A. J. Chamkha, E. Mamatha
Summary: The present investigation focuses on examining the flow characteristics of an electrically conducting hybrid nanofluid past a linearly stretched sheet. The study takes into account the effect of various factors on flow and heat transfer, and uses similarity transformations and numerical techniques to obtain the velocity and temperature of the hybrid nanofluid. Statistical analysis is also conducted to establish the relationship between physical entities and heat transfer rate.
CHINESE JOURNAL OF PHYSICS
(2022)
Article
Mathematics, Applied
C. W. Sahabandu, M. Dewasurendra, Z. A. M. S. Juman, K. Vajravelu, Ali J. Chamkha
Summary: In this paper, a semi-analytical method called MDDiM is developed and applied to solve the problem of harmonic wave propagation in nonlinear generalized thermo-elasticity. By varying the magnetic field, relaxation time, and rotation, approximate solutions for the displacement and temperature fields are obtained and presented graphically. The new extended MDDiM method outperforms the existing OHAM with minimum error and faster convergence rate.
COMPUTERS & MATHEMATICS WITH APPLICATIONS
(2022)
Article
Thermodynamics
Y. Dharmendar Reddy, B. Shankar Goud, Ali J. Chamkha, M. Anil Kumar
Summary: This article investigates the influence of Joule heating and chemical reaction on magneto Casson nanofluid phenomena in the occurrence of thermal radiation through a porous inclined stretching sheet. The effects of various physical flow parameters on velocity, heat, and mass transfer distributions are analyzed using numerical methods.
Article
Physics, Multidisciplinary
Ajeet Kumar Verma, Krishnendu Bhattacharyya, Sohita Rajput, Mani Shankar Mandal, Ali J. Chamkha, Dhananjay Yadav
Summary: In this study, the 2D laminar boundary layer flow of Prandtl-Eyring nanofluid over an inclined non-linear expanding sheet was investigated in the presence of mixed convection and double stratification. The impacts of various parameters on flow distributions were analyzed using numerical methods. The results showed that fluid velocity, nanofluid temperature, and nanoparticle concentration were influenced by different parameters.
WAVES IN RANDOM AND COMPLEX MEDIA
(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
Physics, Multidisciplinary
Muzamil Hussain, Umer Farooq, Mikhail Sheremet, Jifeng Cui, Ali J. Chamkha
Summary: The aim of this research is to study the impacts of nanomaterials on magnetohydrodynamics Darcy-Forchheimer nanofluid flow over a stretched surface with the influences of heat generation/absorption, thermal radiations and second order velocity slip condition. The research results are of great help for research works on industrial nanofluids applications.
WAVES IN RANDOM AND COMPLEX MEDIA
(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
Physics, Multidisciplinary
Kotha Gangadhar, M. Rupa Lavanya, M. Venkata Subba Rao, Ali J. Chamkha
Summary: This study investigates the impact of activation energy and bioconvection on the modified second-grade nanofluid along the Riga pattern, while also considering the effects of convective boundary and nonlinear heat flux. The study highlights the importance of the electrical field generated by the Riga plate. The results validate the significance of heat source in improving the thermal performance of coolants.
WAVES IN RANDOM AND COMPLEX MEDIA
(2022)
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
Thermodynamics
Mohammad Nemati, Hajar Mohamadzade Sani, Ramin Jahangiri, Ali J. Chamkha
Summary: In this study, the natural convection heat transfer characteristics of a nanofluid under a magnetic field were investigated using the Lattice Boltzmann Method (LBM). The effects of different wall shapes and heating modes on the flow and heat transfer were studied. The results showed that increasing the magnetic field strength and heat generation/absorption coefficient decreased the heat transfer efficiency.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Multidisciplinary Sciences
Kotha Gangadhar, Manda Aruna Kumari, M. Venkata Subba Rao, Ali J. Chamkha
Summary: In this study, the features of heat and mass transfer phenomena of a two-dimensional viscous fluid flow of Oldroyd-B nanofluid over a vertical stretched sheet containing gyrotactic microorganisms are analyzed theoretically. The effects of mixed convection, inclined magnetic field, and thermal radiation are considered, along with Joule heating and heat sink/source. Nonlinear system equations are obtained and solved numerically using the RKF-45 method. The results show that the velocity distribution decreases with relaxation time and thermal stratification parameter, while the motile density profile is enhanced by increasing bioconvection Rayleigh number and buoyancy ratio. These findings are relevant to bio-inspired nanofluid-enhanced fuel cells and nanomaterials fabrication processes.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2022)
