Article
Multidisciplinary Sciences
Galal M. Moatimid, Mona A. A. Mohamed, Ahmed A. Gaber, Doaa M. Mostafa
Summary: The purpose of this investigation is to study the behavior of the tangent-hyperbolic micropolar nanofluid border sheet across an extending layer through a permeable medium under the influence of a normal uniform magnetic field. The study takes into account temperature and nanoparticle mass transmission, as well as other factors such as Ohmic dissipation, heat resource, thermal radiation, and chemical impacts. The results have important applications in boundary layers and stretching sheet issues, and the innovation lies in combining tangent-hyperbolic and micropolar fluids with nanoparticle dispersal.
SCIENTIFIC REPORTS
(2023)
Article
Thermodynamics
Danial Habib, Sohaib Abdal, Rifaqat Ali, Dumitru Baleanu, Imran Siddique
Summary: This study investigates the magnetic effects on the heat and mass transmission of micropolar fluid over a permeable stretching geometry with dilute dispersion of nano-particles and gyrotactic microorganisms. The results show variations in physical quantities under different emerging parameters and provide valuable insights for heat transfer devices and micropolar fuel cells. Numerical analysis of Brownian motion, Rayleigh number, thermophoresis parameter, Peclet number, and buoyancy ratio parameter demonstrate the impact on thermal balance in micro-electronics.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Ammara Bhatti, M. Mustafa, Talat Rafiq
Summary: The present study investigates the buoyancy assisted or opposed Falkner-Skan nanofluid flow over a heated wedge using a single-phase model and partial slip assumption. The numerical analysis of velocity field and temperature shows that the nanofluid assumption is crucial for enhancing thermal conductivity. Additionally, the study using the Buongiorno model in a special case helps to understand the effects of changing Brownian diffusion and thermophoresis parameters on temperature distribution.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Energy & Fuels
Azad Hussain, Mubashar Arshad, Aysha Rehman, Ali Hassan, S. K. Elagan, Hijaz Ahmad, Amira Ishan
Summary: This study examines the heat transfer characteristics of magnetohydrodynamic nanofluid flow, focusing on the impact of rotation. Results show that rotation increases heat flux and decreases skin friction, with Zn-water nanofluid proving to be more effective in heat transfer compared to TiO2-water nanofluid.
Article
Energy & Fuels
Azad Hussain, Mubashar Arshad, Aysha Rehman, Ali Hassan, Sayed K. Elagan, Nawal A. Alshehri
Summary: This research aimed to describe the impact of a rotating nanoliquid on an elasting surface using a two-phase nanoliquid model. By converting the system of partial differential equations into a system of ordinary differential equations and using powerful numerical techniques, the study presented results for velocity and heat transfer features.
Article
Thermodynamics
Venkata Subba M. Rao, B. J. Gireesha, Kotha Gangadhar, Manasa P. Seshakumari, S. Sindhu
Summary: This paper investigates the magnetohydrodynamic boundary layer flow of a hybrid mixture across a stretching surface under the influence of an electric field using numerical methods. The study reveals that the presence of a magnetic field and slip factor slows down fluid motion, while the flow velocity increases with rising electric field estimations to resolve sticky effects.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Multidisciplinary Sciences
Yu-Pei Lv, Hina Gul, Muhammad Ramzan, Jae Dong Chung, Muhammad Bilal
Summary: A new type of non-Newtonian fluid named Reiner-Rivlin nanofluid flow over a rough rotating disk with Cattaneo-Christov (C-C) heat flux is studied in a permeable media, with the stability of the nanoparticles augmented by adding gyrotactic microorganisms. The concept is improved by considering factors like Arrhenius activation energy, chemical reaction, slip, and convective conditions at the surface boundary. The entropy generation is evaluated using the second law of thermodynamics, and the results are compared with a previously published paper to validate the accuracy of the model.
SCIENTIFIC REPORTS
(2021)
Article
Mechanics
K. Govindarajulu, A. Subramanyam Reddy
Summary: This study analyzes the magnetohydrodynamic pulsatile flow of third grade hybrid nanofluid in a porous channel under the impacts of viscous dissipation, thermal radiation, and Ohmic heating. The findings of this research are significant in various fields including food processing, biomedical engineering, and pharmaceuticals. The study investigates the pulsating flow of a third grade hybrid nanofluid with thermal radiation and Joule heating effects, which has not been reported before. The study demonstrates that velocity decreases with a rise in Hartmann number and non-Newtonian parameter, while the temperature of the nanofluid is enhanced with increasing viscous dissipation.
Article
Mathematics
Basma Souayeh
Summary: The purpose of this work is to propose a unique theoretical framework of ternary nanofluid (graphene/tungsten oxide/zirconium oxide) for enhanced heat transfer. This model demonstrates superior heat conduction compared to a hybrid nanofluid. By suspending three different nanostructures with distinct chemical and physical bonds in water, the ternary nanofluid (graphene/tungsten oxide/zirconium oxide) is created. The synergistic effect of these nanoparticles enables the breakdown of toxic substances, purification of air, and cooling of other devices. This article discusses the properties of ternary nanofluids, including thermal conductivity, specific heat capacitance, viscosity, and density. Additionally, the heat transport phenomena are explained using the Cattaneo-Christov (CC) heat flow theory. The impacts of thermal nonlinear radiation and velocity slip are considered in the modeling of the investigated physical phenomena.
Article
Chemistry, Physical
Muhammad Mumtaz, Saeed Islam, Hakeem Ullah, Zahir Shah
Summary: This research article examines the flow of modified hybrid nanofluid on a curved stretching sheet under the influence of electricity and magnetism. The study evaluates the heat and mass transfer properties of the ternary nanofluid and concludes that increasing the curvature enhances the velocity profile while the impact of the magnetic factor is opposite. The research also highlights the importance of nanofluids in nanotechnology and their potential for enhancing heat transfer.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
K. Mahmud, R. Mehmood, S. Rana, A. Al-Zubaidi
Summary: In this research, the effects of Hall and ion-slip on oblique stagnation point flow of magneto hydrodynamics Casson nanofluid with Newtonian heating and zero heat and mass on an elastic surface are discussed. The governing equations are transformed into a system of non-linear ODEs using similarity transformation and solved numerically using the Runge-Kutta Fehlberg method. The results show the influence of physical constraints on the velocity, temperature, and nanoparticles' concentration. Skin friction quantities, heat and mass flux are measured numerically. The study reveals the dominant influence of the magnetic field parameter on temperature and concentration of nanoparticles far away from the surface.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Physical
Sami Ullah Khan, Kamel Al-Khaled, M. M. Bhatti
Summary: The improved thermal mechanism of nano-scale particles has gained special attention from scientists for its dynamic applications in various fields such as engineering, thermal sciences, and bio-medical sciences. By studying the bioconvection assessment in Oldroyd-B nanofluid and employing the partial slip mechanism, the heat and mass transportation can be enhanced effectively. The concentration profile decreases with retardation time constant and Schmidt number, indicating the potential for further advancements in this area of research.
SURFACES AND INTERFACES
(2021)
Article
Multidisciplinary Sciences
Ebrahem A. Algehyne, Mounirah Areshi, Anwar Saeed, Muhammad Bilal, Wiyada Kumam, Poom Kumam
Summary: This study investigates the application of magnetic fluid dynamic bioconvection on permeable surfaces, focusing on the effects of motile microorganisms and nanoparticles on the nanofluid bioconvection. The study evaluates the flow physical parameters and their relationship with velocity, energy, volume fraction of nanoparticles, motile microorganisms' density, skin friction, Sherwood number, and Nusselt number.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Multidisciplinary
T. Salahuddin, Nazim Siddique, Mair Khan, Yu-Ming Chu
Summary: Hybrid nanofluids show great promise in thermal performance and environmental impact, with the study focusing on the 3D stagnation point flow of such fluids. The analysis examines the material's heat transfer characteristics and structure through mathematical modeling.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Fazle Mabood, Maria Imtiaz, Maimona Rafiq, Essam Roshdy El-Zahar, Maawiya Ould Sidi, Muhammad Ijaz Khan
Summary: This article investigates the flow of nanofluid over a variable thickened stretching sheet by incorporating non-Fourier's heat flux and non-Fick's mass flux. The study shows that an increase in the power-law index parameter enhances the fluid flow, heat, and mass transfer.
Article
Engineering, Marine
Farouk Tahrour, Hijaz Ahmad, Houari Ameur, Tareq Saeed, Hanaa Abu-Zinadah, Younes Menni
Summary: With the increase of heat transfer problems in marine vehicles and submerged power stations in oceans, the search for an efficient finned-tube heat exchanger has become particularly important. In this study, the thermal exchange and flow characteristics between five different fin designs were analyzed and compared. The results showed that changing the fin spacing improved the Colburn factor and reduced the friction factor and fin performances for all cases under study. Based on three criteria, the S-SFT fin design was found to be the most efficient for cooling offshore energy systems.
JOURNAL OF OCEAN ENGINEERING AND SCIENCE
(2023)
Article
Mathematical & Computational Biology
Mir Sajjad Hashemi, Mohammad Partohaghighi, Hijaz Ahmad
Summary: Fractional derivatives are mathematical instruments used to model real phenomena in science. This study develops models for human liver and hearing loss using three different fractional operators and obtains approximate solutions through numerical techniques.
INTERNATIONAL JOURNAL OF BIOMATHEMATICS
(2023)
Article
Materials Science, Multidisciplinary
Ali Hassan, Najah Alsubaie, Fahad M. Alharbi, Abdullah Alhushaybari, Ahmed M. Galal
Summary: This study examines the thermal slip flow of a hybrid ferro-fluid mixture with shape effect of nanoparticles and partial slip, under the constant influence of Stefan suction/blowing impacts. The flow is magnetized with a time-dependent magnetic force in the transverse direction. The impact of partial slip on the magnetized hybrid ferro-fluid is considered, and the effect of different shaped nanoparticles on heat transfer efficiency is analyzed and discussed. The highly nonlinear flow governing equations are transformed into ordinary differential equations using a suitable similarity transform. The motion and temperature profile of spherical shaped nanoparticles of the hybrid ferro-fluid are analyzed and discussed under the influence of suction and blowing effect. The results show that with mass suction S = 1 and partial slip 0.2 <= Sf <= 0.6, reduced shear stress rates and high rates of heat transfer are obtained. It is concluded that the high Lorentz force under suction/blowing effect contracts the thermal boundary of the flow, and laminar shaped nanoparticles increase the temperature profile compared to other shapes.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Multidisciplinary Sciences
Uma Bharti, Pramod Kumar Vaishnav, Shao-Wen Yao, Hijaz Ahmad
Summary: The behavior of surface horizontally polarized shear waves (SH waves) in a composite multi-material structure with a periodic irregular surface and interface was investigated in this study. The dispersion relation was obtained analytically and graphically demonstrated to analyze the propagation behavior of the SH waves. The results showed that the irregularity of the interface had an impact on the phase velocity, while the irregularity of the free surface had less effect. These findings are important for understanding the compositions of materials on the mountain surface.
Article
Physics, Applied
Muhammad Farooq, Hijaz Ahmad, Dilber Uzun Ozsahin, Alamgeer Khan, Rashid Nawaz, Bandar Almohsen
Summary: This paper investigates the Poiseuille flow of non-isothermal couple stress fluid of Reynolds model between two heated parallel inclined plates using the AHPM and OHAM-DJ methods. The approximate solutions for various flow properties are obtained and compared, showing excellent resemblance between the two methods.
MODERN PHYSICS LETTERS B
(2024)
Article
Physics, Condensed Matter
Banat Gul, Muhammad Salman Khan, Muhammad Aasim, Gulzar Khan, Hijaz Ahmad, Phatiphat Thounthong
Summary: In this study, we investigated the optoelectronic and thermoelectric properties of novel lead-free ASnI3 perovskite materials using density functional theory calculations. The materials showed the characteristics of indirect band-type semiconductors with a small bandgap for CsSnI3. The computed density of states and linear optical properties indicated the potential use of the materials in optoelectronic devices. Additionally, the materials exhibited promising thermoelectric parameters for use in thermoelectric devices.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Physics, Multidisciplinary
Banat Gul, Muhammad Salman Khan, Ahmad A. Lfseisi, Hijaz Ahmad
Summary: The structural, electronic, optical, and thermoelectric properties of potassium-based ternary KAuY (Y = S, Se, and Te) materials were studied using density functional theory calculations. The results showed that these materials possess stable nature, wider energy band gaps, semiconductor properties, and potential applications in optoelectronic devices and thermoelectric systems.
Article
Electrochemistry
Banat Gul, Md. Fayz-Al-Asad, Muhammad Salman Khan, Mostafizur Rahaman, Govindasami Periyasami, Hijaz Ahmad
Summary: This study used density functional theory to examine the structural, optoelectronic, and elastic characteristics of novel binary chalcogenides, confirming direct and indirect band gaps in ZrX2 and PtX2 materials, respectively. Formation energy, cohesive energies, and optical constants were calculated, while significant elastic properties were also discussed. The findings suggest ZrSe2 to be the most ductile material, with potential applications in semiconductor devices.
Article
Materials Science, Biomaterials
Hanumesh Vaidya, Kerehalli Vinayaka Prasad, Dharmendra Tripathi, Rajashekhar Choudhari, Hijaz Ahmad
Summary: This study examines the flow of viscoplastic hybrid nanofluids driven by pumping through a vertical cylindrical tube due to a stenosed artery. The effects of Hall and ion-slip currents and magnetic field on flow characteristics, thermal characteristics, and concentration profiles are analyzed. Mathematical equations based on fluid dynamics principles are employed and a perturbation method is used to determine temperature, concentration, and velocity profiles. The results of this study have potential applications in healthcare, particularly in the circulatory system and drug delivery through stenosed arteries.
Article
Astronomy & Astrophysics
Aylin Caliskan, Rana Muhammad Zulqarnain, Ertan Gudekli, Imran Siddique, Hijaz Ahmad, Sameh Askar
Summary: This paper explores new neutron star models based on spherically symmetric space-time using f(T,T) gravity theory. By incorporating off-diagonal tetrad and employing junction equations, the properties of compact stars are investigated thoroughly, including energy density, pressure profiles, anisotropy, equation of state, and stability.
FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Banat Gul, Muhammad Salman Khan, Muhammad Aasim, Ahmad A. Ifseisi, Gulzar Khan, Hijaz Ahmad
Summary: In this study, novel types of lead-free halide perovskites were characterized for their electronic, optical, and thermoelectric properties. The results showed that these materials possess an indirect band gap semiconducting nature, with CsSnI3 having a smaller band gap and higher energy efficiency. The linear optical properties were also calculated, indicating possible applications in optoelectronic devices.
Article
Thermodynamics
Zakaria Sari Hassoun, Khaled Aliane, Ali Akgul, Rabab Jarrar, Jihad Asad, Younes Menni, Hijaz Ahmad
Summary: This study focuses on a heat exchanger with a horizontal rectangular channel, where triangular obstacles are attached periodically to promote heat transfer. Four different channel models with various roughnesses were compared, and the triangular roughness (Type 3) was found to be the most effective in improving heat transfer and reducing friction values.
Article
Thermodynamics
Mehnaz Shakeel, Muhammad Nawaz Khan, Imtiaz Ahmad, Hijaz Ahmad, Nantapat Jarasthitikulchai, Weerawat Sudsutad
Summary: In this research, numerical solutions for multi term space fractional PDE are obtained using the radial basis functions approach. The fractional derivatives of these functions are evaluated using both the Caputo and Riemann-Liouville definitions. By utilizing local radial basis functions, stable and accurate solutions are obtained for the problem. The accuracy of the method is assessed through a double mesh procedure, and numerical solutions are presented for various fractional orders to demonstrate the impact of introducing fractional calculus.
Article
Thermodynamics
Fuzhang Wang, Niaz Ali Shah, Imtiaz Ahmad, Hijaz Ahmad, Muhammad Kamran Alam, Phatiphat Thounthong
Summary: In this article, the analytical solution of Burgers' equations is approximated using the multistage homotopy asymptotic method, a commonly used technique in modern physics and fluid mechanics. The proposed algorithm is an accurate and simple semi-analytic tool for solving non-linear problems. The research evaluates the efficiency and accuracy of the method for solving non-linear partial differential equations over a large time span, and numerical comparison with the variational iteration method demonstrates the efficacy and accuracy of the proposed method.
Article
Mathematics, Applied
Mubashir Qayyum, Efaza Ahmad, Hijaz Ahmad, Bandar Almohsen
Summary: This manuscript focuses on the solution and analysis of time and space fractional coupled Schro center dot dinger system through a new approach, and examines the effect of fractional parameters on wave profiles through numerical analysis.
