Article
Engineering, Multidisciplinary
Nurul Amira Zainal, Roslinda Nazar, Kohilavani Naganthran, Ioan Pop
Summary: This study proposes a unique model to investigate the unsteady stagnation point flow in a hybrid nanofluid induced by an exponentially permeable stretching/shrinking sheet with a magnetic field. The results show that the skin friction coefficient and local Nusselt number increase by enhancing the suction/injection parameter and nanoparticles volume fraction.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2021)
Article
Thermodynamics
Ubaidullah Yashkun, Khairy Zaimi, Anuar Ishak, Ioan Pop, Rabeb Sidaoui
Summary: This study focuses on enhancing thermal conductivity using a hybrid nanofluid mathematical model, combining natural mixed convection and Joule heating. Results show dual solutions, indicating the novelty of the study. The increase in copper volume fraction and Eckert number leads to a decrease in surface temperature, resulting in a decrease in heat transfer rate.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Engineering, Chemical
Ali Akbar Abbasian Arani, Hossein Aberoumand
Summary: This study investigates the stagnation-point flow of hybrid Ag-CuO/water nanofluids over a stretching/shrinking sheet. Through numerical and stability analysis, it is found that there are dual solutions to the problem, which are connected to the shrinking rate. The friction factor and Nusselt number of the nanofluids show significant variations with the suction/injection parameter.
Article
Thermodynamics
Iskandar Waini, Anuar Ishak, Ioan Pop
Summary: This paper investigates the flow of a hybrid nanofluid towards a stagnation point on an exponentially stretching/shrinking vertical sheet with buoyancy effects. The authors found that the heat transfer rate is higher for the Al2O3-Cu/water hybrid nanofluid compared to Cu/water nanofluid, and observed non-uniqueness of solutions for certain physical parameters. Additionally, bifurcation of solutions was noticed in the downward buoyant force and shrinking regions.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Physics, Multidisciplinary
Dhurgham Allaw, Norfifah Bachok, Norihan Md Arifin, Fadzilah Md Ali
Summary: This study investigates the behavior of carbon nanotubes at unsteady stagnation points, taking into account the slip effects. Through mathematical modeling and numerical simulations, the relationships between practical quantities and key parameters are obtained and physically interpreted. The study finds that there are double solutions for both extending and shrinking cases, and increasing the volume fraction of carbon nanotubes accelerates the separation of fluid. This research has significant implications for various industries, including processing and biomedical.
CHINESE JOURNAL OF PHYSICS
(2023)
Article
Thermodynamics
Iskandar Waini, Joan Pop, Sakhinah Abu Bakar, Anuar Ishak
Summary: This study investigates the effects of radiation and magnetohydrodynamic on the flow of an exponentially shrinking sheet in a hybrid nanofluid. Numerical results show that dual solutions arise for the shrinking case, with one solution being stable over time. The heat transfer rate increases with the rise of the magnetic field and hybrid nanoparticles, and is higher in the presence of radiation.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Mathematics
Nadhirah Abdul Halim, Fadiya Mohd Noor Noor
Summary: A study was conducted on the stagnation-point flow of Powell-Eyring nanofluid, taking into consideration the buoyancy force effect due to mixed convection, as well as the impact of Brownian motion and thermophoresis. Stagnation has a bigger influence under passive control of nanoparticles. Assisting flows exhibit better heat and mass transfer rates.
Article
Chemistry, Multidisciplinary
Arfan Hyder, Yeou Jiann Lim, Ilyas Khan, Sharidan Shafie
Summary: The effects of MHD, mixed convection, thermal radiation, stretching, and shrinking on the heat transfer characteristics of a Cu-water-based nanofluid over a stretching/shrinking sheet with MHT effects are investigated in this study. The results show that an increase in the melting parameter leads to an enhanced rate of heat transfer, while an increase in the stretching/shrinking parameter results in a decrease in the rate of heat transfer. A comprehensive analysis of the influences of all mentioned driving parameters is presented.
Article
Materials Science, Multidisciplinary
Mubashir Qayyum, Tariq Abbas, Sidra Afzal, Syed Tauseef Saeed, Ali Akgul, Mustafa Inc, Khaled H. Mahmoud, Abdullah Saad Alsubaie
Summary: This manuscript presents a study on the modeling and analysis of an unsteady Carreau fluid with a magnetohydrodynamical effect over a stretching sheet. The governing equations were solved analytically using the homotopy analysis method (HAM) and numerically using the BVP4C routine in Matlab. The results show excellent agreement with existing literature and the effect of various fluid parameters on velocity and temperature profiles are studied using graphical and tabular analysis.
Article
Engineering, Multidisciplinary
Nurul Amira Zainal, Iskandar Waini, Najiyah Safwa Khashi'ie, Abdul Rahman Mohd Kasim, Kohilavani Naganthran, Roslinda Nazar, Ioan Pop
Summary: The aim of this study is to investigate the flow behavior of the Al2O3-Cu/H2O hybrid nanofluid over a stretching/shrinking sheet, taking into account Arrhenius kinetics and thermal radiation. A novel mathematical model for the hybrid nanofluid is proposed, considering multiple effects that have not been addressed in prior literature. The findings show the existence of dual solutions within the defined ranges of physical parameters, and the hybrid nanofluid exhibits enhanced heat transfer performance compared to viscous flow and nanofluid flow.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Mathematics
Kifle Adula Duguma, Oluwole Daniel Makinde, Lemi Guta Enyadene
Summary: This article investigates the steady two-dimensional boundary layer flow of incompressible viscous Casson nanofluids over a permeable, convectively heated, shrinking/stretching slippery sheet surface. The study is of great significance in terms of both the theoretical modeling of non-Newtonian nanofluid flow with heat transfer in engineering systems and engineering cooling applications. The effects of suction/injection, viscous dissipation, convective heating, and chemical reactions are taken into consideration. Numerical solutions are obtained using the fourth-fifth order Runge-Kutta-Fehlberg method combined with the shooting method. The influence of different parameters on the dimensionless temperature, velocity, concentration, as well as local Nusselt number, skin friction, and local Sherwood number are presented in graphs and tables.
JOURNAL OF MATHEMATICS
(2023)
Article
Materials Science, Multidisciplinary
Dezhi Yang, Muhammad Israr Ur Rehman, Aamir Hamid, Saif Ullah
Summary: The study investigated the effect of a non-uniform heat source/sink on the unsteady stagnation point flow of Carreau fluid past a permeable stretching/shrinking sheet, incorporating additional effects of magnetohydrodynamics, joule heating, and viscous dissipation. The nonlinear partial differential equations were transformed into ordinary differential equations and solved using the Runge-Kutta-Fehlberg technique. The results showed how the fluid flow velocity and temperature of Carreau fluid varied with different parameters, and how the local Nusselt number changed with the Eckert number for both upper and lower branches.
Article
Mathematics, Applied
Golam Mortuja Sarkar, Bikash Sahoo
Summary: This paper investigates the steady three-dimensional Hiemenz flow of a viscous incompressible fluid over a stretching/shrinking sheet. Numerical solutions for the shear stress parameters and displacement thicknesses of the sheet are obtained and compared with asymptotic solutions. Dual solutions of the similarity equations are found for both the stretching and shrinking cases, and a stability analysis reveals the physically reliable solution.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2022)
Article
Thermodynamics
Y. Y. Lok, I. Pop, J. H. Merkin
Summary: This article investigates the forced convection flow near a stagnation point on a stretching/shrinking cylinder. By analyzing the asymptotic behavior and verifying it with numerical results, conclusions are drawn regarding critical values related to dimensionless parameters, the possibility of multiple solutions, and the similarity of asymptotic behavior.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Mathematics
Syafiq Zainodin, Anuar Jamaludin, Roslinda Nazar, Ioan Pop
Summary: This paper investigates the mixed convection flow of Fe3O4-CoFe2O4/water hybrid ferrofluids on stagnation point, and the results show that adding CoFe2O4 nanoparticles increases the heat transfer rate, while the presence of a magnetic field enhances the fluid flow velocity.
Article
Thermodynamics
P. M. Patil, D. N. Latha, S. Roy, Ebrahim Momoniat
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2017)
Article
Thermodynamics
P. M. Patil, A. Shashikant, S. Roy, E. Momoniat
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2017)
Article
Thermodynamics
P. M. Patil, H. S. Ramane, S. Roy, Vijaykumar Hindasageri, Ebrahim Momoniat
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2017)
Article
Mechanics
E. Momoniat
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2017)
Editorial Material
Mechanics
P. M. Patil, Ebrahim Momoniat
Article
Thermodynamics
P. M. Patil, Monisha Roy, S. Roy, E. Momoniat
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2018)
Article
Thermodynamics
P. M. Patil, Monisha Roy, A. Shashikant, S. Roy, E. Momoniat
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2018)
Article
Thermodynamics
P. M. Patil, A. Shashikant, E. Momoniat, C. Harley
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2018)
Article
Mechanics
C. Harley, E. Momoniat, K. R. Rajagopal
INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS
(2018)
Article
Physics, Multidisciplinary
P. M. Patil, A. Shashikant, P. S. Hiremath, E. Momoniat
Article
Physics, Multidisciplinary
P. M. Patil, A. Shashikant, P. S. Hiremath, E. Momoniat
Article
Engineering, Mechanical
Prabhugouda M. Patil, Shivanandappa H. Doddagoudar, Prakash S. Hiremath, Ebrahim Momoniat
JOURNAL OF THE BRAZILIAN SOCIETY OF MECHANICAL SCIENCES AND ENGINEERING
(2019)
Article
Mathematics
Sever Silvestru Dragomir, Muhammad Amer Latif, Ebrahim Momoniat
Summary: This paper establishes a new identity for differentiable mappings and proves new integral inequalities of Hermite-Hadamard type for differentiable p-convex functions using mathematical analysis techniques. A comparison with previously obtained results shows that the results presented in this paper are superior to those in existing literature.
QUAESTIONES MATHEMATICAE
(2021)
Proceedings Paper
Mathematics, Applied
R. S. Herbst, C. Harley, E. Momoniat
INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS (ICNAAM 2017)
(2018)
Article
Thermodynamics
Prabhugouda M. Patil, Nafisabanu Kumbarwadi, Ebrahim Momoniat
HEAT TRANSFER-ASIAN RESEARCH
(2018)