Article
Thermodynamics
T. Anusha, U. S. Mahabaleshwar, Suvanjan Bhattacharyya
Summary: This article focuses on the MHD flow and heat transfer of a Jeffrey fluid on a stretching/shrinking surface with carbon nanotubes. The effects of thermal radiation, heat source/sink parameters, and Navier's slip are considered. By suspending two types of carbon nanotubes into water, a new type of nanofluid is formed to improve the thermal conductivity and mechanical properties of the base fluid. The study observes and discusses the velocity and temperature profiles, skin friction coefficient, and Nusselt number through graphs. The results show that the usage of SWCNT nanofluids is more advantageous than MWCNT nanofluids, and carbon nanotubes have potential applications in electronics and transportation.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Thermodynamics
Mehdi Salari, Mohammad Reza Assari, Ashkan Ghafouri, Nader Pourmahmoud
Summary: The heat transfer characteristics of MgO-EG nanofluid flowing in a double tube heat exchanger with a partial porous material were experimentally investigated. The results showed that using nanofluid and porous media significantly improved heat transfer. The use of partial porous media is recommended to enhance the thermal performance of heat exchangers in industrial applications.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Thermodynamics
M. K. Nayak, S. Shaw, Hassan Waqas, O. D. Makinde, Metib Alghamdi, Taseer Muhammad
Summary: This study discusses a comparative study on the three-dimensional Casson nanofluid with nonlinear radiative MHD flow and heat transfer aspects between two parallel stretching/shrinking surfaces. Mathematical models for momentum and temperature are established with nanoparticles distributed in Pure Water, and models like Maxwell-Garnett and Patel are used for thermal conductivity augmentation. Different parameters have varied effects on the heat transfer rate.
CASE STUDIES IN THERMAL ENGINEERING
(2021)
Article
Chemistry, Physical
Hassan Waqas, Md. Jahid Hasan, Afraz Hussain Majeed, Dong Liu, Taseer Muhammad
Summary: This study investigates the impact of nanofluid concentration on the natural convective flow of magnetic fluid in a sinusoidal cavity with variable wavelengths. The results show that the heat transfer rate, kinetic energy, and entropy generation increase with decreasing volume concentrations of nanofluid, while they are negatively affected by the magnetic field. The study also reveals that the Hartmann number has a significant effect on fluid flow, thermal parameters, and entropy generation. Furthermore, the Rayleigh number plays a notable role in entropy generation, with higher values resulting in higher entropy generation. Grade: 7/10
JOURNAL OF MOLECULAR LIQUIDS
(2023)
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
Thermodynamics
Hao Ma, Boshu He, Liangbin Su, Di He
Summary: This study investigates the laminar nanofluid flow and convective heat transfer at the entry region of microtubes under constant wall temperature and constant heat flux boundary conditions. The results show that the entrance effect dominates pressure drop and thermal performance of the nanofluids near the entrance of the channel, while the influences of particle concentration and particle size gradually become evident as the axial distance increases.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2023)
Article
Engineering, Multidisciplinary
Adnan Asghar, Narcisa Vrinceanu, Teh Yuan Ying, Liaquat Ali Lund, Zahir Shah, Vineet Tirth
Summary: A numerical study was conducted to investigate the influence of various factors on the 3-D hybrid nanofluid flow. The results showed that hybrid nanofluids have higher heat transfer rates. The study obtained unique solutions for the temperature and velocities profiles under different parameters. Rating: 8
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Physics, Multidisciplinary
U. S. Mahabaleshwar, Emad H. Aly, T. Anusha
Summary: This article investigates the non-Newtonian MHD flow and heat transfer of copper-alumina/water hybrid nanofluid due to permeable stretching/shrinking surface with a full slip model. The system of nonlinear partial differential equations was transformed to a system of ordinary differential equations. The impact of various physical parameters on velocity and temperature distributions were discussed, and it was found that the temperature distribution and thermal boundary layer increase with the increase of certain parameters. Additionally, the velocities and temperatures of the nanofluid and hybrid nanofluid behave differently in stretching and shrinking cases. The findings have potential industrial and technological applications.
CHINESE JOURNAL OF PHYSICS
(2022)
Article
Thermodynamics
Liping Yu, Yijie Li, Venkatesh Puneeth, Sami Znaidia, Nehad Ali Shah, Sarpabhushana Manjunatha, Muhammad Shoaib Anwar, Muhammad Riaz Khan
Summary: The study investigates the flow and thermal characteristics of a ternary nanofluid consisting of MoS2, ZnO, SiO2, and water. Results show that increasing the molybdenum disulfide content enhances the heat conductivity of the nanofluid but decreases the flow speed. Positive values of the heat source/sink parameter lead to higher heat conduction of the nanofluid.
NUMERICAL HEAT TRANSFER PART A-APPLICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Umair Khan, Aurang Zaib, Anuar Ishak, Fahad S. Al-Mubaddel, Sakhinah Abu Bakar, Hammad Alotaibi, Hassan M. Aljohani
Summary: This study investigates the behavior of shear-thickening and shear-thinning fluids in magnetohydrodynamic flow with the impact of a hybrid nanofluid on a porous radially shrinking/stretching disc. The physical properties of a water-based Ag/TiO2 hybrid nanofluid are examined, leading to an enhanced heat transfer rate and thermal conductivity. The numerical analysis reveals non-uniqueness of results for various parameters, with bifurcation occurring only in the shrinking case. The sketches indicate that nanoparticle volume fractions and magnetic fields delay the separation of the boundary layer.
Article
Thermodynamics
Liaquat Ali Lund, Zurni Omar, Ilyas Khan
Summary: The study aims to explore the multiple branches of three-dimensional flow of Cu-Al-2 O-3/water rotating hybrid nanofluid in a porous medium over a stretching/shrinking surface. It utilizes an extended model of Darcy incorporating Forchheimer and Brinkman effects, with Tiwari and Das model for dynamic viscosity. The research reveals dual branches in the system of governing ODEs, with stability analysis identifying a stable branch showing increased heat transfer rate with reduced phi(2), depending on porosity, suction, and stretching/shrinking parameters.
INTERNATIONAL JOURNAL OF NUMERICAL METHODS FOR HEAT & FLUID FLOW
(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
Engineering, Aerospace
Wen-Chung Wu, Ankit Kumar
Summary: In this study, the flow characteristics of nanofluid over a backward facing step at low Reynolds number were numerically investigated, and the heat transfer was analyzed. The results showed that the use of nanofluid increased the heat transfer coefficient and Nusselt number, while decreasing the coefficient of skin friction and outlet temperature.
Article
Thermodynamics
Ammar Tariq, Zhenyu Liu
Summary: In this study, the lattice Boltzmann method with multiple-relaxation-time was used to simulate the slip gaseous fluid flow and heat transfer in confined porous medium. Nusselt number and friction factor were obtained and analyzed for different types of obstacles at pore-scale level, leading to proposed new predictive correlations. This work contributes to understanding the slip gaseous flow characteristic in confined porous space.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2022)
Article
Engineering, Multidisciplinary
Kai Tang, Mohammad Amin Masoumi, Hamid Rajabi, Seyed Alireza Rozati, Omid Ali Akbari, Farnaz Montazerifar, Davood Toghraie, Mohammad Khalili
Summary: This paper presents a numerical simulation study of graphene nanoplatelet (GNP) - sodium dodecylbenzene sulfonate (SDBS) - water nanofluid. The study indicates that higher Reynolds numbers lead to increased convective heat transfer coefficients, decreased temperature gradients, and increased influence of cooling fluid temperature in the warm areas near the solid wall. Furthermore, higher Reynolds numbers also result in larger development lengths and decreased outlet section temperatures.
ALEXANDRIA ENGINEERING JOURNAL
(2022)