Article
Multidisciplinary Sciences
Mehari Fentahun Endalew, Subharthi Sarkar
Summary: This study investigates the combined impacts of melting process and wedge angle entity on hydromagnetic hyperbolic tangent nanofluid flow. A mathematical model is used to represent the system and numerical computations are carried out using a MATLAB solver. The results show good agreement with previous studies. This study has practical applications in chemical engineering for coating materials, aerosol manufacturing, and thermal treatment of water-soluble solutions.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
K. Padmaja, Rushi B. Kumar
Summary: This paper numerically evaluates the flow of nanofluids through a vertical plate in a porous medium. The study takes into account Dufour and Soret impacts coupled with higher order chemical reactions and investigates heat and mass transfer. The flow equations are transformed from partial differential equations to ordinary differential equations using similarity transformation variables, and the Runge-Kutta method and shooting technique are employed to solve the converted system. The impact of different chemical reaction orders on flow properties is analyzed using MATLAB.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Aerospace
Bin Zhang, Jihong Zhu, Gaoxiang Xiang, Limin Gao
Summary: This paper presented the topology optimization of 2D and 3D Nanofluid-Cooled Heat Sink (NCHS) and investigated the effects of energy dissipation constraints, temperature-dependent fluid properties, and nanofluid characteristics on optimal configurations. The study concluded that the branched flow channels in the optimal configuration increased with the rise of allowed energy dissipation, and that temperature-dependent fluid properties were significant for obtaining appropriate optimal results with the best cooling performance.
CHINESE JOURNAL OF AERONAUTICS
(2021)
Article
Thermodynamics
Natalia C. Rosca, Alin Rosca, Ioan Pop
Summary: The paper numerically studies mixed convection flow of a hybrid nanofluid past a vertical wedge with thermal radiation effect. The solutions of the ordinary differential equations have two branches and a stability analysis has been performed to determine their physical meaning. The effects of governing parameters on fluid flow and heat transfer characteristics are illustrated.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2022)
Article
Thermodynamics
Nadia Kakar, Asma Khalid, Amnah S. Al-Johani, Nawa Alshammari, Ilyas Khan
Summary: This research investigates the stagnation point flow with heat transfer of water-based hybrid nano-fluid over a stretching/shrinking wedge, considering a magnetic field and melting heat transfer effect. The study focuses on the impacts of different dimensionless parameters on the velocity field, temperature distribution, skin friction coefficient, and Nusselt number. The findings show significant effects of these parameters on the flow and heat transfer characteristics. Additionally, two branches of solutions are observed based on specific range of supervising parameters.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Mathematics, Applied
M. D. Alsulami, R. Naveen Kumar, R. J. Punith Gowda, B. C. Prasannakumara
Summary: The study investigates the heat transport properties under the lack of local thermal equilibrium conditions using a simplified mathematical model. The results suggest that the LTNE model yields two distinct primary thermal gradients between the fluid phase and the solid phase. The impact of different parameters on the velocity and thermal performance of non-Newtonian fluid flow containing Ti6Al4V and AA7075 nanoparticles in a porous media with magnetic effect is discussed.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2023)
Article
Engineering, Multidisciplinary
Umair Khan, Aurang Zaib, Ioan Pop, Sakhinah Abu Bakar, Anuar Ishak
Summary: This study investigates the buoyancy effect on time-dependent flow and heat transfer induced by a hybrid micropolar nanofluid over a permeable shrinking or stretching vertical flat plate. The analysis reveals significant insights into the behavior of the solution under different controlling parameters and for both stretching and shrinking cases.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Usman, Abid Ali Memon, Metib Alghamdi, Taseer Muhammad
Summary: The article investigates heat transfer characteristics of a water alumina nanofluid through a three-dimensional annular. The study found that the average Nusselt number at the middle of the annular increases initially with volume fraction before decreasing, while the average percentage change in temperature relative to the inner cylinder's hot temperature decreases with an increase in volume fraction.
SCIENTIFIC REPORTS
(2022)
Article
Mathematics
Sumayyah Alabdulhadi, Iskandar Waini, Sameh E. Ahmed, Anuar Ishak
Summary: This paper investigates the effects of hybrid nanoparticles and magnetic field on mixed convection boundary layer flow and heat transfer caused by an inclined shrinking-stretching surface in a hybrid nanofluid. Numerical solutions are obtained using MATLAB, showing that increasing the magnetic parameter significantly enhances heat transfer while increasing skin friction coefficient. Additionally, increasing the nanoparticle volume fraction is found to increase skin friction coefficient but decrease heat transfer rate. Multiple solutions are discovered, but only the first solution is stable according to temporal stability analysis.
Article
Physics, Multidisciplinary
P. M. Patil, Madhavarao Kulkarni
Summary: The study investigates the concept of MHD mixed convection with Ag-TiO2 / H2O hybrid nanofluid flow over a slender cylinder and its applications in science and engineering. By applying a uniform magnetic field to analyze the impact on transport characteristics of the flow, the behavior of thermal efficiency is studied considering different nanoparticles shape factor. The simulation demonstrates that inclusion of hybrid nanoparticles in the base fluid results in higher heat transfer and the velocity of the hybrid nanofluid is enhanced with increasing values of mixed convection parameter and velocity ratio parameter.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Multidisciplinary Sciences
Aisha M. Alqahtani, Muhammad Bilal, Aatif Ali, Theyab R. Alsenani, Sayed M. Eldin
Summary: This study reviews the MHD spinning flow of hybrid nanofluid (HNF) across two permeable surfaces, finding that the radial velocity curve decreases with the stretching parameter, Reynold number, and rotation factor, while increasing with the suction factor. In addition, the energy profile improves with the increasing number of Au and Ag-NPs in the base fluid.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Rana Muhammad Zulqarnain, Muhammad Nadeem, Imran Siddique, Hijaz Ahmad, Sameh Askar, Mahvish Samar
Summary: This contribution aims to optimize the nonlinear thermal flow of a tri-hybrid nanofluid (Al2O3 + Cu + TiO2/EO) by considering the effects of boundary slip. The study investigates the influence of various parameters on the flow and thermal characteristics using numerical computing and graphical display. The results provide insights into the optimization of thermal transport in complex nanofluid flow systems.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
K. Vinutha, K. V. Nagaraja, Kiran Sajjan, Umair Khan, J. K. Madhukesh, Uma C. Kolli, Taseer Muhammad
Summary: The Soret and Dufour effects play a significant role in fluidic mass and temperature transfer, with applications in nanofluidics, biological systems, and combustion processes. This study focuses on the movement of a ternary nanofluid over a wedge-shaped structure and investigates the impact of heat source/sink, Soret, and Dufour effects. The results provide valuable insights for real-world applications and engineering fields.
NANOSCALE ADVANCES
(2023)
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
Thermodynamics
K. Sreelakshmi, G. Sandhya, G. Sarojamma, K. Vajravelu, Aj Chamkha
Summary: In this research, the assessment of entropy in the MHD flow of a hybrid nanofluid and a mono-nanofluid was explored. The effects of various physical parameters on the flow features were analyzed, and a comparison was made between the two types of nanofluids. The results validated the accuracy of the numerical method used and showed that the hybrid nanofluid had higher temperature and thermal diffusion rate compared to the mono-nanofluid.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(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
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.
Review
Engineering, Multidisciplinary
Hamed Eshgarf, Afshin Ahmadi Nadooshan, Afrasiab Raisi
Summary: This review paper discusses active, passive, and hybrid methods to enhance heat transfer rate, with a focus on the passive method of using nanofluids. The governing equations and modeling methods for nanofluid flows are provided, along with a summary of advanced investigations on single-phase and two-phase flow regimes. Although there are conflicting results among researchers, most conclude that numerical modeling based on two-phase models provides a better prediction than single-phase models.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
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
Engineering, Multidisciplinary
Sara Rostami, Afshin Ahmadi Nadooshan, Afrasiab Raisi, Morteza Bayareh
Summary: This article presents a numerical simulation of a heatsink with a large number of square pin-fins using the finite element method. The two-phase mixture method is employed to simulate the nanofluid flow. The results show that an increment in the Reynolds number reduces the temperature of the nanofluid exiting the heatsink significantly, while increasing the volume fraction of nanoparticles slightly decreases it.
ENGINEERING ANALYSIS WITH BOUNDARY ELEMENTS
(2023)
Article
Materials Science, Multidisciplinary
Ahmad Hajatzadeh Pordanjani, Afrasiab Raisi, Alireza Daneh-Dezfuli
Summary: This paper investigates the heat transfer and fluid flows of a magnetohydrodynamic nanofluid in a two-parallel-plate microchannel with three isothermal heat sources. The study considers temperature jump and slip, as well as the presence and absence of viscous dissipation. The results show that an increase in the Reynolds number enhances the heat transfer rate, while viscous dissipation decreases it. The slip coefficient has a significant effect on the Nusselt number, especially at higher magnetic fields. An increase in the slip coefficient leads to higher heat transfer rates under the slip boundary condition, with a larger increase observed when viscous dissipation is present.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Chemistry, Physical
Hamed Eshgarf, Afshin Ahmadi Nadooshan, Afrasiab Raisi, Masoud Afrand
Summary: This paper experimentally evaluates the viscosity and thermal conductivity of Fe3O4/water nanofluid and proposes an estimation model using an artificial neural network. The results indicate that the volume fraction of nanoparticles and temperature have a direct relationship with the thermal conductivity coefficient of nanofluids, while the viscosity of the nanofluid decreases with the decrease in volume fraction of nanoparticles and increases with the decrease in temperature. The neural network shows fewer errors and higher accuracy in predicting the viscosity and thermal conductivity of nanofluids.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Chemical
Sara Rostami, Afshin Ahmadi Nadooshan, Afrasiab Raisi, Morteza Bayareh
Summary: This paper presents a numerical simulation of water flow, ethylene glycol flow, and water-ethylene glycol flow in a heatsink with a new geometry. The heatsink uses cylindrical pin-fin with different cross sections in a spiral arrangement to increase the heat transfer surfaces. The simulations show that increasing the Reynolds number leads to lower THS and THR values, and better TPU. Using water instead of ethylene glycol can reduce THS by 19.8% at low Reynolds numbers and by 13.7% at high Reynolds numbers. Circular pin-fins reduce the required pump power by 12.7% and 13.1% compared to elliptical pin-fins at Reynolds numbers of 500 and 1000, respectively. The minimum THR and the best TPU are achieved with square and circular pin-fins, respectively.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Thermodynamics
Hamid Reza Askarifard Jahromi, Afrasiab Raisi, Behzad Ghasemi, Afshin Ahmadi Nadooshan
Summary: This article numerically investigates the mixed convection of Bingham fluid in a narrow annulus. An OpenFOAM solver, icoFoam, is modified to solve unsteady heat transfer problems for Bingham fluids. The simulation results show the effect of Reynolds number, Bingham number, and aspect ratio on the flow field and thermal performance. An interesting phenomenon of the formation, movement, and disappearance of unyielded regions is observed.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Energy & Fuels
Saeed Adibpour, Afrasiab Raisi, Ahmadreza Sajadi, Gary Rosengarten
Summary: The power generation of a photovoltaic (PV) panel is affected by solar radiation and PV temperature. Tracking PV panels reach higher temperature due to more received radiation. Phase change materials (PCMs) are used for cooling fixed PV panels, but their melting dynamics during tracking are different. This research numerically models a tracking PV-PCM system and analyzes the temperature distribution and convection in the PCM. Results show that PCM is effective in absorbing heat from PV panels during melting, reducing the PV panel temperature by an average of 6.9 K.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Thermodynamics
N. Taheri, A. Raisi, B. Ghasemi, M. Afrand
Summary: This research investigates the combination of natural convection and surface and volumetric radiation in water-aluminum oxide nanofluid with non-Newtonian effects in a square cavity. The study examines the effect of the Rayleigh number, the power-law index, and the volumetric radiation parameter on the flow field and heat transfer rate. The results show that the heat transfer rate increases with higher Rayleigh numbers and lower power-law indices, while the volumetric radiation parameter affects the radiative and convective Nusselt numbers.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Green & Sustainable Science & Technology
Seyed Meysam Alirahmi, Afrasiab Raisi, Behzad Ghasemi, Afshin Ahmadi Nadooshan
Summary: This study investigates the concept of peak shaving by storing energy at a low cost during off-peak hours and using it during peak hours. A novel storage configuration combining solid oxide fuel cell (SOFC), compressed air energy storage (CAES), and water desalination unit is proposed. The system aims to address power failures and reduce emissions while increasing efficiency. An economic, environmental, and thermodynamic analysis is conducted, and the system is optimized using the gray wolf algorithm.
