Article
Thermodynamics
Milan K. K. Mondal, Nirmalendu Biswas, Aparesh Datta, Dipak Kumar Mandal, Nirmal K. K. Manna
Summary: An investigation is conducted to study the thermo-fluid flow behavior of Cu/Al2O3-water hybrid nanofluid in a porous enclosure with various half-sinusoidal heating conditions. The study reveals the significant parameters that affect heat transfer, such as frequency, amplitude, modified Rayleigh number, Darcy number, Hartmann number, porosity, and hybrid nanoparticle concentrations. The effect of cooler positions on energy transport is also explored, and the bottom-bottom configuration is found to be the most favorable. The study provides useful correlations for predicting heat transfer characteristics and guiding thermal devices design.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Multidisciplinary Sciences
Sattar Aljabair, Ali L. Ekaid, Sahira Hasan Ibrahim, Israa Alesbe
Summary: In this study, mixed convection heat transfer of Cu-water nanofluid in an arc cavity with non-uniform heating was numerically investigated. The results showed that the local and average heat transfer rates increase with increased volume fraction, Reynolds number, or Rayleigh number. Correlation equations of the average Nusselt number from numerical results were also presented.
Article
Engineering, Multidisciplinary
Najiyah Safwa Khashi'ie, Norihan Md Arifin, Ioan Pop
Summary: This paper investigates the heat transfer in MHD hybrid nanofluid flow on a moving plate. Numerical solutions reveal two possible solutions, with the first solution being the physically realizable one. The study shows that increasing the strength of suction and magnetic parameter enhances heat transfer and extends the critical value, while the Eckert number has no effect on the critical value. This research is significant in understanding the thermal behavior of nanofluids and has practical implications in industrial applications.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Mathematics
Nurul Amira Zainal, Roslinda Nazar, Kohilavani Naganthran, Ioan Pop
Summary: In this study, the impact of magnetic field on the unsteady separated stagnation-point flow of hybrid nanofluid is numerically investigated, taking into account viscous dissipation and Joule heating. A new mathematical model for hybrid nanofluid is developed, and similarity solutions in the form of ordinary differential equations are obtained. The findings show that the skin friction coefficient and heat transfer rate of the fluid increase with the nanoparticle volume fraction and unsteadiness parameter. The magnetic and acceleration parameters also have a significant effect on the heat transfer performance.
Article
Thermodynamics
Zakaria Korei, Smail Benissaad, Farid Berrahil, Abdelkader Filali
Summary: In this study, the magneto-convection flow in a cavity driven by the lid was investigated using computational fluid dynamics (CFD) techniques. The numerical findings were validated and it was found that the magnetic field orientation, corners radius, and nanoparticle concentration have significant effects on the flow and heat transfer.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Xiao-Hong Zhang, Awatef Abidi, A. El-Sayed Ahmed, M. Riaz Khan, M. A. El-Shorbagy, Meshal Shutaywi, Alibek Issakhov, Ahmed M. Galal
Summary: The article examines the attributes of convection and Joule heating in a magneto-hydrodynamics two-dimensional stagnation point flow, finding that temperature profiles vary with different parameters, while velocity decreases with increasing nanoparticle concentration, curvature, and Hartmann number. Friction drag decreases with larger curvature and increases with greater suction, while heat transfer rate decreases with lower Eckert number and increases with stronger suction, Hartmann, and Biot number.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Liaquat Ali Lund, Adnan Asghar, Ghulam Rasool, Ubaidullah Yashkun
Summary: This study investigates the heat transfer characteristics of a magnetized Casson sodium alginate-alumina/copper hybrid nanofluid flowing through a permeable moving plane, taking into account thermal radiation and Joule heating effects. The study focuses on the influence of the velocity ratio parameter on the solid volume fraction and Casson parameter, and examines the velocity and temperature profiles under various conditions. The results show that there are two branch solutions for the velocity ratio parameter, depending on the Casson parameter and copper volume fraction values.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Computer Science, Artificial Intelligence
Najiyah Safwa Khashi'ie, Nur Syahirah Wahid, Norihan Md Arifin, Ioan Pop
Summary: This paper investigates the MHD stagnation-point flow of Cu-Al2O3/H2O hybrid nanofluid on a convectively heated shrinking disk, taking into account suction, Joule heating, and viscous dissipation effects. Numerical solutions reveal the existence of two solutions, with the first solution being physically stable. The results show that an increase in suction and magnetic parameters enhances the heat transfer performance, while the Eckert and Biot numbers have no effect on the critical value. The temperature profile decreases with an increase in the velocity ratio parameter, Eckert and Biot numbers, while the velocity increases with an increase in the velocity ratio and magnetic parameters.
NEURAL COMPUTING & APPLICATIONS
(2022)
Article
Engineering, Multidisciplinary
Khadija Rafique, Zafar Mahmood, Haifa Alqahtani, Sayed M. Eldin
Summary: The research aimed to investigate the impact of different shapes of nanoparticles on the entropy production of a water-alumina nanofluid. The results showed that the wall shear stress increases by almost 6.3% for increases in the volume fraction of nanoparticles from 0% to 2% and by 12.6% for increases from 0% to 4% in the region behind a stretching sheet. When the magnetic effect accounts for roughly 5 percent of the boundary layer flow, there is an approximately 16.4 percent increase in the rate of convective heat transfer. The frictional force and thermal entropy produced by nanofluids with blade-, brick-, and Os-shaped NPs were lower than that produced by nanofluids with platelet-shaped NPs. On the cold fluid side, the nanofluid with Os-shaped NPs develops thermal entropy at a faster rate than those with brick-, blade-, cylinder-, and platelet-shaped NPs.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Astronomy & Astrophysics
L. Adhikari, G. P. Zank, L-L Zhao, M. Nakanotani, S. Tasnim
Summary: The study developed a theoretical model combining nearly incompressible magnetohydrodynamic (NI MHD) turbulence with a solar wind model that includes electron pressure and heat flux. The results show that the model is consistent with the measurements of fast solar wind by PSP and Helios 2.
ASTRONOMY & ASTROPHYSICS
(2021)
Article
Multidisciplinary Sciences
Senthil Jayanthi, Hari Niranjan
Summary: This study investigates the flow of magnetohydrodynamic (MHD) nanofluid through a stretching vertical surface influenced by various factors such as Joule heating, chemical reaction, viscosity dissipation, thermal radiation, and activation energy. By using the similarity technique and symmetry analysis, the complicated boundary layer equations for motion, energy, solute, and nanoparticle concentration are simplified. The altered equations are then solved using the shooting technique with Matlab bvp4c. The results show that the Schmidt number, Biot number, and thermal radiation have significant effects on temperature, concentration, local Nusselt number, local Sherwood number, and skin friction.
Article
Materials Science, Multidisciplinary
Sivasankaran Sivanandam, Bhuvaneswari Marimuthu
Summary: The purpose of this study is to examine the combined effect of convective current and thermal energy transport in an inclined lid-driven square chamber with sine curve temperature at the lower wall and a constant external magnetic field. Insulation is used to increase the effective space volume of the shell. The findings show that the flow behavior of enclosure convection is strongly influenced by the enclosure inclination and magnetic field strength, and the overall heat transfer rate decreases with increasing Hartmann number and Richardson number.
MULTIDISCIPLINE MODELING IN MATERIALS AND STRUCTURES
(2023)
Article
Thermodynamics
Fatih Selimefendigil, Ali J. Chamkha
Summary: In this study, the magnetohydrodynamics mixed convective flow of Ag-MgO/water hybrid nanofluid in a triangular shaped partitioned cavity involving a porous layer was numerically investigated. Various parameters such as Richardson number, Hartmann number, magnetic field inclination angle, and hybrid nanoparticle solid volume fraction were examined for their effects on fluid flow and convective heat transfer features. It was observed that the porous layer location and other factors played a significant role in controlling convective heat transfer.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Physics, Applied
M. Irfan, Aamir Hamid, M. Khan, Aamir Nadeem, W. A. Khan, Nadeem Nasir
Summary: This study focuses on the thermal properties of Joule heating and thermal conductivity in magnetite Maxwell nanofluids. The results show that the Maxwell temperature field is influenced by Eckert number and variable conductivity factors. The concentration of the fluid affects the thermophoretic and Brownian motion factors.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Engineering, Mechanical
Deep Chatterjee, Nirmalendu Biswas, Nirmal K. Manna, Sandip Sarkar
Summary: This study aims to understand the impact of the position of discrete heaters and coolers on a cylindrical thermal system. By altering the positions and controlling parameters, the heat transfer and entropy production are systematically investigated. The study reveals that the cross-wise heating-cooling arrangement is the most effective option for enhanced heat transfer.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Thermodynamics
Mohammad Ali Taghikhani, Mohammad Reza Afshar
Summary: The study found that the horizontal placement mode is more effective in heat transfer compared to the vertical mode. Adjusting the position of fans can enhance cooling efficiency in both modes. While the vertical mode can be improved by optimizing fan positions, the heat transfer superiority is achievable for horizontal mode even when a fan is disconnected.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY
(2021)
Article
Engineering, Manufacturing
Mohammad Ali Taghikhani, Behnam Zangeneh
Summary: In this paper, the optimal scheduling problem of a micro-grid connected to the main grid with renewable energy resources is studied. Mixed-integer linear programming and stochastic programming techniques are used to model the uncertainty of wind and solar resources. The proposed method proves to be more efficient in terms of operation cost compared to the genetic algorithm.
JOURNAL OF SCHEDULING
(2022)
Article
Energy & Fuels
Mohammad Ali Taghikhani
Summary: This study evaluates the optimal planning of micro-grids in the presence of renewable energy resources using water cycle and grey wolf optimization algorithms. It takes into account load variations, battery energy storage, and uncertainty in renewable resources. The results indicate that the proposed methods are more effective than particle swarm optimization and mixed-integer linear programming.
SMART GRIDS AND SUSTAINABLE ENERGY
(2023)
Article
Thermodynamics
Mohammad Ali Taghikhani
JOURNAL OF THERMAL ENGINEERING
(2020)
