Article
Mathematics
Shahirah Abu Bakar, Norihan Md Arifin, Najiyah Safwa Khashi'ie, Norfifah Bachok
Summary: This study investigates the flow of hybrid nanofluid over a permeable Darcy porous medium with slip, radiation, and shrinking sheet. The non-uniqueness of solutions and increased heat transfer rate in hybrid nanofluid compared to traditional nanofluid are observed. Solutions stability analysis shows that the upper solution is stable while the lower solution is not stable.
Article
Engineering, Multidisciplinary
Aqeel Ur Rehman, Zaheer Abbas
Summary: This analysis investigates the hydromagnetic flow of nanofluids towards a shrinking sheet with thermal radiation. The study analyzes three different fluids and explores the effects of various parameters on flow and heat transfer characteristics. The research findings reveal the presence of dual solutions and demonstrate the influence of base fluid and nanoparticles masses, velocity ratio parameter, magnetic parameter, Prandtl number, and radiation parameter on the system.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Mathematics
Nur Syahirah Wahid, Norihan Md Arifin, Najiyah Safwa Khashi'ie, Ioan Pop
Summary: This study investigates the hybrid nanofluid slip flow over an exponentially stretching/shrinking permeable sheet with heat generation. By utilizing numerical simulations and stability analysis, it is found that increasing the volume fraction of copper nanoparticles can enhance the skin friction coefficient and local Nusselt number in the system.
Article
Mathematics
Iskandar Waini, Anuar Ishak, Ioan Pop
Summary: This study investigates the nanofluid flow towards a shrinking cylinder with Al2O3 nanoparticles, finding a unique solution for the shrinking strength lambda >= -1 and dual solutions when lambda c<-1. Additionally, it shows that the friction factor and heat transfer rate increase with the rise of Al2O3 nanoparticles and curvature parameter.
Article
Thermodynamics
Iskandar Waini, Anuar Ishak, Ioan Pop
Summary: The study investigates the impact of hybrid nanoparticles on flow and heat transfer over a stretching/shrinking disk. It reveals that dual solutions are possible for both shrinking and stretching cases, while a unique solution exists for the static surface. Moreover, the skin friction coefficient is optimal on the static surface, and heat transfer rate increases with the addition of hybrid nanoparticles.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Thermodynamics
Iskandar Waini, Anuar Ishak, Ioan Pop
Summary: This study investigates the impinging flow on a shrinking cylinder in Al2O3-Cu/water hybrid nanofluid subjected to prescribed surface heat flux. Two solutions are possible for the shrinking case, where one is stable in the long run. Friction and heat transfer on the surface increase with higher values of φhnfand γ.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(2021)
Article
Multidisciplinary Sciences
Sumera Dero, Hisamuddin Shaikh, Ghulam Hyder Talpur, Ilyas Khan, Sayer O. Alharbim, Mulugeta Andualem
Summary: This study investigates the heat transfer properties of magnetized Cu + Al2O3 / water hybrid nanofluid over a shrinking surface, with radiation effects. The numerical solution of the ODE model using the shooting method reveals the existence of dual solutions. Stability analysis identifies the conditions for the presence of dual solutions and emphasizes the impact of the copper solid volume fraction parameter on heat transfer rate.
SCIENTIFIC REPORTS
(2021)
Article
Mathematics, Applied
Thippaiah Maranna, Ulavathi Shetter Mahabaleshwar, Sunnapagutta Narasimhappa Ravichandra Nayakar, Ioannis Sarris, Basma Souayeh
Summary: This research focuses on energy conversion and mass transfer in magnetohydrodynamic hybrid nanofluid flows driven by a moving surface. The findings show that mass transfer has a significant impact on the flow behavior, which is important for understanding and improving such systems.
ZAMM-ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK
(2023)
Article
Mathematics
Iskandar Waini, Anuar Ishak, Ioan Pop
Summary: This paper examines the influence of hybrid nanoparticles on flow and heat transfer over a permeable non-isothermal shrinking surface, considering radiation and MHD effects. Results show that heat transfer rate increases with magnetic parameter and radiation parameter, and is higher on isothermal surfaces.
Article
Thermodynamics
Nur Syazana Anuar, Norfifah Bachok, Ioan Pop
Summary: This study investigated the heat transfer and boundary layer flow of a hybrid nanofluid on an inclined stretching/shrinking sheet, finding that the local Nusselt number increases with larger inclination angle and suction parameters, and decreases with higher silver nanoparticle volume fraction in the MgO/water nanofluid.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Physics, Multidisciplinary
Nurul Amira Zainal, Roslinda Nazar, Kohilavani Naganthran, Ioan Pop
Summary: The study evaluated the impact of hybrid nanofluid on heat generation/absorption effects through mathematical analysis, finding that the volume fraction of nanoparticle and magnetic parameter can improve the skin friction coefficient, and the intensity of the suction parameter increases heat transfer rate while heat generation reduces it. The results had dual solutions and led to stability analysis implementation.
CHINESE JOURNAL OF PHYSICS
(2021)
Article
Multidisciplinary Sciences
Humaira Sharif, Bagh Ali, Imran Siddique, Iqra Saman, Mohammed M. M. Jaradat, Muhammad Sallah
Summary: This study analyzes the momentum and thermic aspects of MHD Ellis ternary nanomaterial embedded with dust particles using a stretchable Riga plate. The flow equations are converted into dimensionless nonlinear ODEs to obtain graphical results. The study investigates the velocity and temperature profiles, as well as evaluates the Nusselt number and skin friction. The findings show that the thermal transport performance of the trihybrid nanophase is better than that of the dusty phase, with rotational and volume fraction dust particles parameters leading to increased temperature distribution.
SCIENTIFIC REPORTS
(2023)
Article
Multidisciplinary Sciences
Muhammad Arif, Poom Kumam, Wiboonsak Watthayu, Luca Di Persio
Summary: Engine oil is a widely used fluid in engineering problems, and by adding nanoparticles of different shapes, the working capability and thermal performance of the oil can be improved. The analysis of the tri-hybrid nanofluid reveals significant enhancements in heat transfer, and it is concluded that tri-hybrid nanofluid has good thermal performance.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Umair Khan, Iskandar Waini, Anuar Ishak, Ioan Pop
Summary: The time-dependent stagnation point flow and heat transfer of a water-based hybrid nanofluid from a radially permeable shrinking or stretching surface are investigated. Numerical results indicate the existence of dual solutions, with only one being stable, and the hybrid nanofluid enhances heat transfer rate compared to a regular fluid.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
H. B. Lanjwani, M. I. Anwar, A. Wahab, S. A. Shehzad, M. Arshad
Summary: The two-dimensional laminar boundary layer flow and heat characteristics of silver water based nanofluid with buoyancy effect over porous shrinking/stretching sheet have been investigated. Numerical investigation shows the existence of triple solutions within certain parameter ranges, and the stability analysis confirms the reliability of these solutions. The stable solutions indicate that skin friction decreases and enhances with increased suction and nanoparticles volume fractions, respectively.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Zia Ullah, Hasan Saeed Qazi, Ahmad Alferidi, Mohammed Alsolami, Badr Lami, Hany M. Hasanien
Summary: This study presents a novel method for optimizing energy trading within microgrids by using a hybrid of particle swarm optimization and gravitational search algorithms. The proposed approach promotes cooperative energy trading among microgrids and the main grid, considering network constraints and the uncertainty of renewable energy. Simulation results show that this method maximizes renewable energy utilization, reduces load burden on the main grid, and significantly decreases energy costs.
ALEXANDRIA ENGINEERING JOURNAL
(2024)
Article
Engineering, Multidisciplinary
Chin Joo Tan
Summary: In this study, the effect of mesh sensitivity on the hole-flanging process was investigated by varying the mesh layouts and punch surface meshing techniques. The results showed that the punch displacement and mesh parameters have significant effects on the wall thickness distributions and forming load profiles. Additionally, calibrating the simulation model's stiffness with the experimental peak load through matching the simulated peak load with the experimental peak under stability conditions was recommended.
ALEXANDRIA ENGINEERING JOURNAL
(2024)
Article
Engineering, Multidisciplinary
Wei-Chao Yang, Lun Zhao, E. Deng, Yi-Qing Ni, Wen Zhao, Yi-Kang Liu, De-Hui Ouyang
Summary: This paper establishes a three-dimensional coupled train-subgrade-wind dynamics model, and investigates the aerodynamic load variation and flow field mechanisms when high-speed trains transit different types of subgrade-cutting transition sections in crosswind conditions. The results indicate that the aerodynamic performance of the train deteriorates in these transition sections, and the aerodynamic load of the head car varies in different operating scenarios.
ALEXANDRIA ENGINEERING JOURNAL
(2024)
Article
Engineering, Multidisciplinary
Shashi Bhushan, Anoop Kumar, Eslam Hussam, Manahil SidAhmed Mustafa, Mohammed Zakarya, Wedad R. Alharbi
Summary: In the sample survey theory, accurate estimation of parameters is essential for survey practitioners. This paper suggests optimal classes of estimators by modifying conventional estimators under stratified ranked set sampling (SRSS). The suggested estimators have been shown to outperform traditional estimators, particularly regression (BLU) estimators, both theoretically and experimentally.
ALEXANDRIA ENGINEERING JOURNAL
(2024)
Article
Engineering, Multidisciplinary
Laila A. Al-Essa, Ahmed A. Soliman, Gamal A. Abd-Elmougod, Huda M. Alshanbari
Summary: In this study, the class of lifetime distributions with bathtub-shaped failure rate functions is examined. Statistical inference methods are used to estimate the parameters of the model, and the Bayesian approach is compared with classical methods. The study also discusses the evaluation of product relative merits based on lifetime duration under a hybrid censoring scheme.
ALEXANDRIA ENGINEERING JOURNAL
(2024)
Article
Engineering, Multidisciplinary
Mohammad Partohaghighi, Marzieh Mortezaee, Ali Akguel, Ahmed M. Hassan, Necibullah Sakar
Summary: The study introduces a new variant of the fractal-fractional diffusion equation using the fractal-fractional operator. It proposes a novel operational matrix technique to solve the equation, transforming it into an algebraic system. The study presents graphical and tabular representations of exact and approximated solutions, along with corresponding errors, and conducts comparative analysis of solutions at specific time points.
ALEXANDRIA ENGINEERING JOURNAL
(2024)
