Article
Thermodynamics
Shafqat Hussain, Muhammad Jamal, B. Pekmen Geridonmez
Summary: This study investigates the impact of fins and inclined magnetic field on nanofluid heat transfer in lid-driven cavities through numerical simulations. The presence of fins significantly affects fluid flow and heat transfer, with differences observed between adiabatic and isothermal fins.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Mechanics
Sapna Jain, Surabhi Nishad, Rama Bhargava
Summary: This paper investigates the effect of double diffusion natural convection fluid flow inside a double wavy enclosure using the mesh-free method. The results show that the mass and heat transfer rates increase with an increase in the Rayleigh number and buoyancy ratio, while they decrease with an increase in the thermophoresis parameter, Lewis number, Brownian motion, and power-law index. Such enclosures have applications in heat exchanger devices, double-wall thermal insulation systems, and microelectronic devices.
Article
Physics, Applied
Bodduna Jamuna, M. P. Mallesh, Chandra Shekar Balla, Sabir Ali Shehzad
Summary: This research investigates the influences of entropy generation on bioconvected nanoliquid flow through a porous cavity filled with nanofluid and gyrotactic microbes. The study focuses on the augmentation of convection by Brownian motion, thermophoresis, and bioconvection, and utilizes finite difference method to solve the nonlinear partial differential equations. Results show that the distribution pattern of total entropies and Bejan number is affected by various quantities such as bioconvection Rayleigh number, Rayleigh number, Peclet number, and buoyancy ratio.
INTERNATIONAL JOURNAL OF MODERN PHYSICS B
(2023)
Article
Green & Sustainable Science & Technology
Fatih Selimefendigil, Hakan F. Oztop
Summary: The performance of a thermoelectric generator installed in a channel flow with double porous cylinders was analyzed using the finite element method. An optimization algorithm was used to determine the optimum size and permeability of the porous objects, resulting in higher power generation compared to a non-object channel configuration. The study found that both lower permeability and larger porous object sizes increased the power output of the thermoelectric generator.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Engineering, Multidisciplinary
Rowsanara Akhter, Mohammad Mokaddes Ali, M. A. Alim
Summary: This investigation explores the fluid flow and temperature behaviors, as well as entropy generation, of hybrid nanofluid in a partially heated cavity saturated by porous medium in the presence of an external magnetic field. The results show that the magnetic field strength, amount of hybrid nanoparticles, and cavity permeability have a significant influence on the fluid flow, temperature, and local entropy generation.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ebrahem A. Algehyne, Zehba Raizah, Taza Gul, Anwar Saeed, Sayed M. Eldin, Ahmed M. Galal
Summary: In this study, the flow of (Cu and Al2O3/water) hybrid nanofluid in a porous cavity is investigated. The thermophysical properties of solid materials are utilized to enhance the thermal performance of the base fluid. The mathematical model of a porous cavity is important in distillation processes and thermal energy storage, while the magnetic field and its impact on fluid motion are examined.
NANOTECHNOLOGY REVIEWS
(2023)
Article
Thermodynamics
Shafqat Hussain, Muhammad Jamal, B. Pekmen Geridonmez
Summary: This study simulated the effects of power law fluid and inclined magnetic field on fluid flow and heat transfer in a porous medium within staggered cavity using finite element method. The results indicate that changes in specific parameters can significantly impact convective heat and mass transfer.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Khalid A. Juhany, Faisal Shahzad, Seraj Alzhrani, Amjad Ali Pasha, Wasim Jamshed, Nazrul Islam, S. Suriya Uma Devi, Rabha W. Ibrahim
Summary: This study constructed a symmetric system combining extended Burgers' nanofluid (BNF) with Fourier's and Fick's laws to investigate the effects of heat source, thermal radiative heat flux, and Cattaneo-Christov mass and heat flux. The numerical solution of the non-linear equations was obtained through similarity transformations and the COMSOL program. The results showed higher temperature and concentration for Fourier-Fick's conditions compared to the revised Fourier-Fick's scenarios. This investigation of Burgers' nanofluid (BNF) with heat source and Cattaneo-Christov mass and heat flux is novel in the available literature.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2023)
Article
Thermodynamics
Brahimi Hiba, Fares Redouane, Wasim Jamshed, C. Ahamed Saleel, S. Suriya Uma Devi, M. Prakash, Kottakkaran Sooppy Nisar, V. Vijayakumar, Mohamed R. Eid
Summary: The objective of this study is to investigate the fluidity and thermal performance of Silver and Magnesium oxide mixed water based hybrid nanofluid in a penetrable hollow ampoule under the influence of magnetic force. Analysis shows that fluidity is influenced by both flow constraints and the structure of the enclosure itself, particularly on the hot wall side with cliff bar structures. Initial values of Rayleigh number and Darcy number play a role in thermal dissemination, keeping heat transfer away from the walls.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Wasim Jamshed
Summary: This study explores the behavior of a hybrid nanofluid based on the mixture of magnesium oxide and silver in a permeable and hollow ampoule, using magnetic effects and thermos-physical models. The twisting ampoule structure was found to have a significant impact on fluidity and heat diffusion, as observed in the developed contours of streamlines.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2022)
Article
Thermodynamics
Basil Mahdi Al-Srayyih, Ahmed Al-Manea, Khalid Saleh, Azher M. Abed, Qusay Rasheed Al-Amir, Hameed K. Hamzah, Farooq H. Ali, Raed Al-Rbaihat, Ali Alahmer
Summary: This study investigates the effects of introducing oscillating elliptical obstacles on natural convection and entropy generation in a quarter-circle cavity filled with a water-based hybrid nanofluid. The results show that an increase in the length of the hot source leads to a decrease in heat transfer rate, and increasing the Rayleigh number significantly increases total entropy generation and heat transfer irreversibility. The amplitude has a greater impact on the average Nusselt number compared to the frequency, and the direction of oscillation of the elliptical obstacles has different effects on the average Nusselt number at different Rayleigh numbers.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Thermodynamics
Xianqin Zhang, Dezhi Yang, Nek Muhammad Katbar, Wasim Jamshed, Ikram Ullah, Mohamed R. Eid, Usman, Zehba Raizah, Rabha W. Ibrahim, Hamiden Abd El-Wahed Khalifa, Sayed M. El Din
Summary: Apart from the Buongiorno concept, no study was published that sufficiently examined the impact of nanoparticles on the extendable surface of the third-grade fluid prototype. The current work theoretically evaluates the liquid simulation needs for Tiwari and Das' third grade nanofluid (3GNF) model using motor oil as the standard base liquid. Tiwari and Das' model focuses on the volume portion of nanoparticles for heat transfer enhancement, while the Buongiorno concept primarily relies on thermophoretic and Brownian dispersion impacts.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Jianfeng Wang, Shan Ali Khan, Sumeira Yasmin, Mohammad Mahtab Alam, Haihu Liu, Umar Farooq, Ali Akguel, Ahmed M. Hassan
Summary: Engineers and researchers use mathematical modeling, computational fluid dynamics, and experimental techniques to study natural convection inside hexagonal cavities and improve the design and efficiency of engineering systems. This study examines the thermal reaction and behavior of natural convectional MWCNT-water nanofluid flow in a hexagonal cavity under the influence of a magnetic field. The results show enhanced convection velocity and temperature outcomes for different values of Rayleigh number, and higher Nusselt number for larger nanoparticles fraction.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Thermodynamics
Muhammad Amer Qureshi, Shafqat Hussain, Muhammad Adil Sadiq
Summary: This paper investigates the heat transfer and fluid flow characteristics of hybrid nanofluid in a horizontal channel with cavity and obstacle using higher order and stable Galerkin finite element method. The study analyzes the impact of various parameters on heat transfer and fluid flow, including Reynolds number, cylinder rotation, aspect ratio of cavity, and variance in cylinder radius. Additionally, hydrodynamic forces such as drag and lift coefficients on the obstacle are also examined.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Engineering, Multidisciplinary
Abed Mourad, Abderrahmane Aissa, Azher M. Abed, Davood Toghraie, Omid Ali Akbari, Kamel Guedri, Obai Younis, Riadh Marzouki
Summary: This work numerically investigates the MHD natural convection and entropy generation characteristics of water-based hybrid nanofluid in a porous annulus. The influence of parameters such as nanoparticle volume fraction, Rayleigh number, Hartman number, Darcy number, and the position of the Koch snowflake on the flow and heat transfer is examined. Applying a Lorentz force affects the flow velocity and facilitates fluid circulation in the cavity.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Physics, Multidisciplinary
N. Akmal, M. Sagheer, S. Hussain, A. Kamran
CANADIAN JOURNAL OF PHYSICS
(2020)
Article
Materials Science, Multidisciplinary
Shafqat Hussain, Sameh E. Ahmed
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2019)
Article
Physics, Multidisciplinary
I Rashid, M. Sagheer, S. Hussain
Article
Thermodynamics
Shafqat Hussain, Hakan F. Oztop, Muhammad Amer Qureshi, Nidal Abu-Hamdeh
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2020)
Article
Physics, Multidisciplinary
M. N. Abrar, M. Sagheer, S. Hussain
Article
Engineering, Multidisciplinary
T. Sajid, M. Sagheer, S. Hussain
MATHEMATICAL PROBLEMS IN ENGINEERING
(2020)
Review
Physics, Multidisciplinary
Tanveer Sajid, Muhammad Sagheer, Shafqat Hussain, Faisal Shahzad
Article
Thermodynamics
Shafqat Hussain, Hakan F. Oztop, Muhammad Amer Qureshi, Nidal Abu-Hamdeh
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2020)
Article
Materials Science, Multidisciplinary
S. Shah, S. Hussain
Summary: This article establishes numerical solutions for MHD flow of Upper-Convected Maxwell fluid in a porous medium caused by a nonlinear stretching surface. It investigates the impacts of parameters such as 'Maxwell', 'thermal relaxation', and 'velocity slip' on flow and heat transfer, and concludes a decrease in velocity and an increase in temperature distribution with larger Maxwell values. Additionally, a higher heat transfer rate is identified with an increase in the thermal relaxation parameter.
RESULTS IN PHYSICS
(2021)
Article
Thermodynamics
Shafqat Hussain, Muhammad Jamal, B. Pekmen Geridonmez
Summary: This study simulated the effects of power law fluid and inclined magnetic field on fluid flow and heat transfer in a porous medium within staggered cavity using finite element method. The results indicate that changes in specific parameters can significantly impact convective heat and mass transfer.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Thermodynamics
Shafqat Hussain, Muhammad Jamal, B. Pekmen Geridonmez
Summary: This study investigates the impact of fins and inclined magnetic field on nanofluid heat transfer in lid-driven cavities through numerical simulations. The presence of fins significantly affects fluid flow and heat transfer, with differences observed between adiabatic and isothermal fins.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2021)
Article
Mathematics, Applied
Irfan Rashid, Muhammad Sagheer, Shafqat Hussain
Summary: This study analyzes the magnetohydrodynamic flow of magnetite-engine oil nanofluid in the presence of nonidentical shaped nanoparticles subject to the porous medium and velocity slip effect. The impacts of Ohmic heating and thermal radiation are considered. The velocity and temperature profiles are found to be influenced by various emerging parameters. The findings provide insights into the flow characteristics of the nanofluid.
NUMERICAL METHODS FOR PARTIAL DIFFERENTIAL EQUATIONS
(2023)
Article
Thermodynamics
Shafqat Hussain, Muneer A. Ismael, Ali J. Chamkha
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2020)
Article
Thermodynamics
Shafqat Hussain, Taher Armaghani, Muhammad Jamal
JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER
(2020)
Article
Engineering, Multidisciplinary
S. M. Atif, S. Hussain, M. Sagheer
Article
Thermodynamics
Mahsa Taghavi, Swapnil Sharma, Vemuri Balakotaiah
Summary: This study investigates the natural convection effects in the insulation layers of spherical storage tanks and their impact on the tanks' performance. The permeability and Rayleigh number of the insulation material are considered as key factors. The results show that as the Rayleigh number increases, new convective cells emerge and cause the cold boundary to approach the external hot boundary. In the case of large temperature differences, multiple solutions may coexist.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Jinyang Xu, Fangjun Hong, Chaoyang Zhang
Summary: This study introduces a self-induced jet impingement device for enhancing pool boiling performance in high power electronic cooling. Through visualization and parametric investigations, the effects of this device on pool boiling performance are studied, revealing the promotion of additional liquid supply and vapor exhausting. The flow rate of the liquid jet is found to positively impact boiling performance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Wenchao Ke, Yuan Liu, Fissha Biruke Teshome, Zhi Zeng
Summary: Underwater wet laser welding (UWLW) is a promising and labor-saving repair technique. A thermal multi-phase flow model was developed to study the heat transfer, fluid dynamics, and phase transitions during UWLW. The results show that UWLW creates a water keyhole, making the welding environment similar to in air laser welding.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Xingrong Lian, Lin Tian, Zengyao Li, Xinpeng Zhao
Summary: This study investigates the heat transfer mechanisms in natural fiber-derived porous structures and finds that thermal radiation has a significant impact on the thermal conductivity in low-density regions, while natural convection rarely occurs. Insulation materials derived from micron-sized natural fibers can achieve minimum thermal conductivity at specific densities. Strategies to lower the thermal conductivity include increasing porosity and incorporating nanoscale pores using nanosize fibers.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Yasir A. Malik, Kilian Koebschall, Stephan Bansmer, Cameron Tropea, Jeanette Hussong, Philippe Villedieu
Summary: Ice crystal icing is a significant hazard in aviation, and accurate modeling of sticking efficiency is essential. In this study, icing wind tunnel experiments were conducted to quantify the volumetric liquid water fraction, sticking efficiency, and maximum thickness of ice layers. Two measurement techniques, calorimetry and capacitive measurements, were used to measure the liquid water content and distribution in the ice layers. The experiments showed that increasing wet bulb temperatures and substrate heat flux significantly increased sticking efficiency and maximum ice layer thickness.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Jinqi Hu, Tongtong Geng, Kun Wang, Yuanhong Fan, Chunhua Min, Hsien Chin Su
Summary: This study experimentally examined the heat dissipation of vibrating fans and demonstrated its inherent mechanism through numerical simulation. The results showed that the flow fields induced by the vibrating blades exhibited pulsating features and formed large-scale and small-scale vortical structures, significantly improving heat dissipation. The study also identified the impacts of different blade structures and developed a trapezoidal-folding blade, which effectively reduced the maximum temperature of the heat source and alleviated high-temperature failure crisis.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Dan-Dan Su, Xiao-Bin Li, Hong-Na Zhang, Feng-Chen Li
Summary: The boiling heat transfer of low-boiling-point working fluid is a common heat dissipation technology in electronic equipment cooling. This study analyzed the interfacial boiling behavior of R134a under different conditions and found that factors such as the initial thickness of the liquid film, solid-liquid interaction force, and initial temperature significantly affect the boiling mode and thermal resistance.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Jinyi Wu, Dongke Sun, Wei Chen, Zhenhua Chai
Summary: A unified lattice Boltzmann-phase field scheme is proposed to simulate dendrite growth of binary alloys in the presence of melt convection. The effects of various factors on the growth are investigated numerically, and the model is validated through comparisons and examinations.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Shaokun Ge, Ya Ni, Fubao Zhou, Wangzhaonan Shen, Jia Li, Fengqi Guo, Bobo Shi
Summary: This study investigated the temperature distribution of main cables in a suspension bridge during fire scenarios and proposed a prediction model for the maximum temperature of cables in different lane fires. The results showed that vehicle fires in the emergency lane posed a greater thermal threat to the cables.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Shuang-Ying Wu, Shi-Yao Zhou, Lan Xiao, Jia Luo
Summary: This paper investigates the two-phase flow and heat transfer characteristics of low-velocity jet impacting on a cylindrical surface. The study reveals that the heat transfer regimes are non-phase transition and nucleate boiling with the increase of heat transfer rate. The effects of jet impact height and outlet velocity on local surface temperatures are pronounced at the non-phase transition stage. The growth rates of heat transfer rate and liquid loss rate increase significantly from the non-phase transition to nucleate boiling stage.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Emad Hasani Malekshah, Wlodzimierz Wlodzimierz, Miros law Majkut
Summary: Cavitation has significant practical importance and can be controlled by air injection. This study investigates the natural to ventilated cavitation process around a hydrofoil through numerical and experimental methods. The results show that the location and rate of air injection have a meaningful impact on the characteristics of cavitation.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Feriel Yahiat, Pascale Bouvier, Antoine Beauvillier, Serge Russeil, Christophe Andre, Daniel Bougeard
Summary: This study explores the enhancement of mixing performance in laminar flow equipment by investigating the generation of chaotic advection using wall deformations in annular geometries. The findings demonstrate that the combined geometry can achieve perfect mixing at various Reynolds numbers.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Hui He, Ning Lyu, Caihua Liang, Feng Wang, Xiaosong Zhang
Summary: This study investigates the condensation, frosting, and defrosting processes on superhydrophobic surfaces with millimeter-scale structures. The results reveal that the structures can influence the growth and removal of frost crystals, with the bottom grooves creating a frost-free zone and conical edges promoting higher frost crystal heights. Two effective methods for defrosting are observed: hand-lifting the groove and airfoil retraction contraction on protruding structures. This research provides valuable insights into frost formation and defrosting on millimeter-structured superhydrophobic surfaces, with potential applications in anti-frost engineering.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Thiwanka Arepolage, Christophe Verdy, Thibaut Sylvestre, Aymeric Leray, Sebastien Euphrasie
Summary: This study developed two thermal concentrators, one with a 2D design of uniform thickness and another with a 3D design, using the coordinate transformation technique and metamaterials. By structuring the thermal conductor, the desired local density-heat capacity product and anisotropic thermal conductivities were achieved. The homogenized thermal conductivities were obtained from finite element simulations and cylindrical symmetry consideration. A 3D concentrator was fabricated using 3D metal printing and characterized using a thermal camera. Compared to devices that solely consider anisotropic conductivities, the time evolution characteristics of the metadevice designed with coordinate transformation were closer to those of an ideal concentrator.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)
Article
Thermodynamics
Liangyuan Cheng, Qingyang Wang, Jinliang Xu
Summary: In this study, we investigated the supercritical heat transfer of CO2 in a horizontal tube with a diameter of 10.0 mm, covering a wide range of pressures, mass fluxes, and heat fluxes. The study revealed a non-monotonic increase in wall temperatures along the flow direction and observed both positive and negative wall temperature differences between the bottom and top tube. The findings were explained by the thermal conduction in the solid wall interacting with the stratified-wavy flow in the tube.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2024)