Article
Nuclear Science & Technology
Khaled Al-Farhany, Ahmed Dhafer Abdulsahib
Summary: This study focuses on the numerical investigation of mixed convective heat transfer in a square enclosure partitioned in two layers, with a rotating circular cylinder affecting the heat transfer, fluid flow, and physical characteristics thermal fields. The results indicate that increasing Darcy number, Rayleigh number, and solid volume fractions enhance flow intensity and heat transfer performance.
PROGRESS IN NUCLEAR ENERGY
(2021)
Article
Thermodynamics
Laith M. Jasim, Hudhaifa Hamzah, Cetin Canpolat, Besir Sahin
Summary: This study presents a numerical solution for the influence of an inner rotating adiabatic cylinder on mixed convection of hybrid nanofluid inside a vented cavity. The study explores the effects of various parameters on energy transport and presents the results through qualitative and quantitative figures.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Umair Khan, Aurang Zaib, Anuar Ishak, El-Sayed M. Sherif, Iskandar Waini, Yu-Ming Chu, Ioan Pop
Summary: In this paper, the authors investigate the mixed convection flow of hybrid nanofluids with irregular heat source/sink effect. They discovered double solutions for both buoyancy assisting and opposing flows. This study provides valuable insights into the physical properties of hybrid nanofluids.
CASE STUDIES IN THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Mohammed Y. Jabbar, Hameed K. Hamzah, Farooq H. Ali, Saba Y. Ahmed, Muneer A. Ismael
Summary: This study investigates convective heat transfer in a porous cavity filled with copper-water nanofluid coupled with an active rotating cylinder. Various influencing parameters such as rotation of the cylinder and thermal conductivity ratio are introduced to study the heat transfer effects. The results show that the rotation of the cylinder and the increase in thermal conductivity ratio have a significant impact on the Nusselt number.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2021)
Article
Multidisciplinary Sciences
Hameed K. Hamzah, Farooq H. Ali, M. Hatami, D. Jing, Mohammed Y. Jabbar
Summary: Numerical Galerkin Finite Element Method (GFEM) was used to study the conjugate heat-transfer of a rotating cylinder in Fe3O4-water nanofluid, showing significant effects of parameters such as nanoparticles volume fraction and Hartmann numbers on the heat transfer performance.
SCIENTIFIC REPORTS
(2021)
Article
Thermodynamics
Oktay Cicek, A. Filiz Baytas, A. Cihat Baytas
Summary: This study numerically analyzes the mixed convection and entropy generation in an annulus with a rotating heated inner cylinder for SWCNT-water nanofluid flow using the LTNE model. The findings indicate that buoyancy force and rotational effect significantly impact the strength of streamlines and isotherms. The addition of nanoparticles to the fluid decreases the minimum total entropy generation, suggesting a significant role for nanofluids in thermal design and heat transfer optimization.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Chemistry, Multidisciplinary
Apichit Maneengam, Tarek Bouzennada, Aissa Abderrahmane, Kaouther Ghachem, Lioua Kolsi, Obai Younis, Kamel Guedri, Wajaree Weera
Summary: A numerical study was conducted to analyze the effects of several factors on heat transfer, flow behavior, and entropy generation in a hybrid nanofluid within a rotating inner tube. The results indicate that increasing the nanoparticle volume fraction, Darcy number, and velocity of the inner tube enhances heat transfer. Additionally, these factors have a significant influence on entropy generation.
Article
Thermodynamics
R. Hemalatha, Peri K. Kameswaran, P. V. S. N. Murthy
Summary: The current article discusses the mixed convective flow of Graphene oxide and Clay nanoparticles suspended in a nanofluid in a non-Darcy porous medium, taking into account the shape of the nanoparticles. The findings indicate that spherical nanoparticles exhibit an enhanced temperature distribution and have a higher settling rate in the base fluid.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Multidisciplinary Sciences
Hamidreza Aghamiri, Mohammadreza Niknejadi, Davood Toghraie
Summary: This study investigates the forced convection of nanofluid flow in a microchannel with rotating cylinders, finding that increasing the velocity of rotating cylinders, Reynolds number, and volume fraction of nanoparticles can enhance heat transfer and pressure drop.
SCIENTIFIC REPORTS
(2021)
Article
Mechanics
Victoria Hamtiaux, Miltiadis V. Papalexandris
Summary: In this study, turbulent thermal convection in mixed porous-pure fluid domains is investigated using direct numerical simulation. The effects of different sizes of the porous medium and heat loading variations on the convective structures and flow patterns are analyzed. Results for flow statistics, Nusselt number, and temperature variations are presented, showing that the large-scale circulation above the porous medium can exhibit single-roll, dual-roll, or intermediate states depending on the area coverage.
JOURNAL OF FLUID MECHANICS
(2023)
Article
Nuclear Science & Technology
Aissa Abderrahmane, Umar F. Alqsair, Kamel Guedri, Wasim Jamshed, Nor Ain AzeanyMohd Nasir, Hasan Sh. Majdi, Shaghayegh Baghaei, Abed Mourad, Riadh Marzouki
Summary: This paper investigates the impact of an inner adiabatic rotating cylinder within a vented cavity on the mixed convection of a hybrid nanofluid using numerical solution. The effects of various parameters on convective heat transfer are studied and the findings suggest that counterclockwise rotation of the cylinder enhances heat transfer. Additionally, when the cylinder is rotated counterclockwise, the heat transfer improves as the cylinder approaches the hot wall.
ANNALS OF NUCLEAR ENERGY
(2022)
Article
Energy & Fuels
Ammar I. I. Alsabery, Mohammed J. J. Alshukri, Nasr A. A. Jabbar, Adel A. A. Eidan, Ishak Hashim
Summary: The generation of entropy and mixed convection in a nanofluid-filled 3D wavy tank containing a rotating cylinder is investigated. The effects of Richardson number, nanoparticle volume fraction, and number of oscillations on heat transfer enhancement are studied through numerical simulations using the FEM. The results show that increasing the nanoparticle volume fraction can enhance heat transfer for low values of the Richardson number and oscillation.
Article
Nanoscience & Nanotechnology
Abdelraheem M. Aly, Ehab Mahmoud Mohamed, Hakan F. Oztop, Noura Alsedais
Summary: This study simulated the influence of a magnetic field and circular rotation of a circular cylinder on the dissemination of solid phase within a nanofluid-filled square cavity. The diffusion of the solid phase was found to be mainly affected by the fixed magnetic field and flow mode.
NANOMATERIALS AND NANOTECHNOLOGY
(2021)
Article
Thermodynamics
N. S. Wahid, N. Md Arifin, N. S. Khashi'ie, I Pop, N. Bachok, M. E. Hafidz Hafidzuddin
Summary: This study investigates the boundary layer flow and heat transfer of magnetic nanofluid past a rotating vertical cone, considering the effects of porosity regime and mixed convection. The results show that increasing the concentration of magnetic nanofluid and the mixed convection parameter can enhance the local heat transfer performance under the influence of the porosity regime in the vertical rotating cone.
JOURNAL OF APPLIED FLUID MECHANICS
(2022)
Article
Multidisciplinary Sciences
Nepal Chandra Roy, Aysha Akter
Summary: This article analyzes the mixed convective hybrid nanofluid flow over a shrinking cylinder in a porous medium, taking into account the presence of a magnetic field. The study finds that the skin friction coefficient and Nusselt number increase significantly with the increase in mixed convection parameter, magnetic field parameter, and porosity parameter. The study also reveals that the boundary layer separation is delayed due to higher values of these parameters, as well as the curvature parameter and volume fractions of the nanoparticles.
Article
Thermodynamics
Hamed Mir, Majid Siavashi
Summary: The study demonstrates the superiority of whole-time scenario optimization for the SAGD process, showing that increasing the number of time-intervals can improve NPV. By selecting suitable algorithm parameters and proposing a new hybrid PSO-PS algorithm, it reduces the number of function calls while greatly enhancing convergence speed.
Article
Computer Science, Interdisciplinary Applications
Hiwa Aryan, Borhan Beigzadeh, Majid Siavashi
Summary: Magnetic drug targeting (MDT) is a promising method for improving the treatment efficiency of cardiovascular diseases (CVDs) and cancers. This study aims to enhance drug delivery to the desired branch and reduce particle entry to unwanted outlets using different magnet configurations. Numerical simulations using the finite element method (FEM) and the Eulerian-Lagrangian approach were conducted to analyze the problem, and the results demonstrate that proper magnet configurations can increase the capture of particles in the desired branch and prevent their entry into unwanted branches.
COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE
(2022)
Article
Chemistry, Physical
Milad Ramezanpour, Majid Siavashi, Ali Q. Raeini, Martin J. Blunt
Summary: The transport and deposition of nanoparticles in a microchannel are investigated numerically. The deposition ratio of nanoparticles is influenced by nanoparticle diameter, fluid velocity, temperature, surface potentials, and double-layer thickness. Brownian motion dominates the behavior, and increasing temperature and decreasing nanoparticle diameter enhance the deposition. The electrostatic double-layer force also affects the deposition, and an increase in surface potential decreases the deposition ratio.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Saleh Mohammadrezaei, Majid Siavashi, Sasan Asiaei
Summary: In this study, a volume of fluid-based lattice Boltzmann method (VOF-LBM) is developed to investigate the wettability of solid surfaces and dynamic behavior of droplets. Experimental validation is conducted, and the effect of different pillar patterns and topographies on contact angle and droplet motion is studied.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Energy & Fuels
Nazanin Variji, Majid Siavashi, Milad Tahmasbi, Mehdi Bidabadi
Summary: The application of phase change materials (PCM) can improve the electrical efficiency of PV panels, but their low thermal conductivity is a disadvantage. This study investigates the use of metal foam insertion to enhance heat transfer, and the results show that inserting metal foam with a porosity of 0.9 can increase the average temperature and electrical efficiency of the system by 6.8% and 9.8% respectively.
JOURNAL OF ENERGY STORAGE
(2022)
Review
Energy & Fuels
Hossein Pourrahmani, Majid Siavashi, Adel Yavarinasab, Mardit Matian, Nazanin Chitgar, Ligang Wang, Jan Van Herle
Summary: This paper aims to comprehensively evaluate the challenges and solutions regarding the long-term performance of proton-exchange membrane fuel cells (PEMFCs). Specifically, it focuses on the design and coating of bipolar plates, optimization of sealing and compression kits, stack degradation, and contamination prevention.
Article
Energy & Fuels
Milad Shirbani, Majid Siavashi, Milad Hosseini, Mehdi Bidabadi
Summary: This study investigates the use of metal foam as a carrier for thermal energy storage with phase change materials. By adjusting the arrangement and size of the pores, the researchers found that the dot arrangement shows better performance in thermal energy storage.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Green & Sustainable Science & Technology
Hamid Moghimi, Majid Siavashi, Mohaddeseh Mousavi Nezhad, Alberto Guadagnini
Summary: This study uses pore-scale direct computations to investigate the velocity fields within highly porous metal foams. The results show that the complexity of the pore flow patterns affects the onset of non-Darcy flow, and porosity and number of pores per inch have significant impacts on the permeability of the foams.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Younes Aryan, Mehdi Jannat Alipour, Majid Siavashi, Amir Mohammad Norouzi
Summary: This paper investigates the thermal performance of a solar collector using nanofluids and porous lines. The results show that the utilization of porous lines can improve the efficiency of the solar collector and significantly increase the outlet temperature of the nanofluid. Additionally, the thermal efficiency can be further enhanced depending on the rotation frequency.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Water Resources
Milad Hosseini, Majid Siavashi, Milad Shirbani, Mohaddeseh Mousavi Nezhad
Summary: Simulation of flow at the pore scale is crucial for understanding fluid behavior in porous media. This study investigates the effect of the magic parameter on simulation results by considering errors in micro-CT images, and compares the results with the Navier-Stokes method. The study also presents a criterion for estimating the error amplitude of flow characteristics due to micro-CT imaging. The findings show that the magic parameter can accurately simulate complex geometries with minimal error.
ADVANCES IN WATER RESOURCES
(2023)
Article
Thermodynamics
Hamidreza Khoshtarash, Majid Siavashi, Milad Ramezanpour, Martin J. Blunt
Summary: By conducting pore-scale simulations, the flow characteristics and convective heat transfer of two-phase nanofluid flow in open-cell metal foams (OCMFs) were investigated. The results showed that parameters such as non-Michaelis flow patterns, nanoparticle concentration and diameter, and pore density have significant effects on heat transfer.
APPLIED THERMAL ENGINEERING
(2023)
Review
Energy & Fuels
Milad Shirbani, Majid Siavashi, Mehdi Bidabadi
Summary: Utilizing phase change materials (PCMs) is an effective method of storing thermal energy and gaining popularity in renewable energy systems. Various numerical methods have been used to study PCM performance during phase changes, but their low thermal conductivity limits their industrial applications. This article addresses the efficient methods of enhancing PCM thermal conductivity.
Article
Thermodynamics
Reza Paknahad, Majid Siavashi, Milad Hosseini
Summary: This study investigates pore-scale flow and conjugate heat transfer in high-porosity open-cell metal foams. Direct numerical simulations are performed using a lattice Boltzmann solver for flow and advection-diffusion. The results show that the transition from the Darcy to non-Darcy regime occurs at lower Reynolds numbers in foams with lower porosity. Additionally, metal foams cool down rapidly at high flow velocities while the temperature rise in the fluid is minimal.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Energy & Fuels
Sepehr Mousavi, Amirhosein Zadehkabir, Majid Siavashi, Xiaohu Yang
Summary: This paper proposes a new hybrid cooling system that combines phase change material (PCM) and liquid cooling to achieve high performance and safety for prismatic batteries. The system uses mini-channel cold plates and PCM plates to provide parallel cooling. Three-dimensional numerical simulations and real driving cycle tests validate the thermal performance, power consumption, and safety of the system. The new design improves battery thermal management characteristics and reduces fabrication and maintenance costs.
Article
Energy & Fuels
Hamed Mir, Majid Siavashi
Summary: In this study, a whole-time scenario optimization is designed to simultaneously optimize the operational and well placement parameters of SAGD. Parallel particle swarm optimization is developed to reduce computational costs. The findings show that conducting parallel PSO can significantly reduce the optimization time, and using non-uniform time intervals can achieve the highest NPV and shorten the SAGD time.
GEOENERGY SCIENCE AND ENGINEERING
(2023)
