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  • Open Access

    ARTICLE

    Performance Analysis of Solar Porous Media Collector Integrated with Thermal Energy Storage Charged by CuFe2O4/Water Nanofluids Coil Tubes

    Ahmad Mola1, Sahira H. Ibrahim1, Nagham Q. Shari2, Hasanain A. Abdul Wahhab3,*

    Energy Engineering, Vol.122, No.6, pp. 2239-2255, 2025, DOI:10.32604/ee.2025.061590 - 29 May 2025

    Abstract High-efficiency solar energy systems are characterized by their designs, which primarily rely on effective concentration and conversion methods of solar radiation. Evaluation of the performance enhancement of flat plate solar collectors by integration with thermal energy storage could be achieved through simulation of proposed designs. The work aims to analyze a new solar collector integrated with a porous medium and shell and coiled tube heat exchanger. The heat transfer enhancement was investigated by varying the geometrical parameters in shell and helically coiled tubes operating with CuFe2O4/water with different volume fractions of 0.02%, 0.05%, and 0.1 vol.%.… More >

  • Open Access

    ARTICLE

    On Heat Transfer in Oblique Stagnation Point Nanofluid Flow with Temperature Dependent Viscosity

    Rabail Tabassum1, M. Kamran1, Khalil Ur Rehman2,*, Wasfi Shatanawi2,3, Rashid Mehmood4

    Frontiers in Heat and Mass Transfer, Vol.23, No.2, pp. 577-599, 2025, DOI:10.32604/fhmt.2025.059466 - 25 April 2025

    Abstract This study aims to elucidate the connection between the shape factor of GO (graphene oxide) nanoparticles and the behavior of blood-based non-aligned, 2-dimensional, incompressible nanofluid flow near stagnation point, under the influence of temperature-dependent viscosity. Appropriate similarity transformations are employed to transform the non-linear partial differential equations (PDEs) into ordinary differential equations (ODEs). The governing equations are subsequently resolved by utilizing the shooting method. The modified Maxwell model is used to estimate the thermal efficiency of the nanofluid affected by different nanoparticle shapes. The impact of various shapes of GO nanoparticles on the velocity and… More >

  • Open Access

    ARTICLE

    Radiative Flow of Ag-Fe3O4/Water Hybrid Nanofluids Induced by a Shrinking/Stretching Disk with Influence of Velocity and Thermal Slip Conditions

    Muhammad Zubair Mustafa1, Sumera Dero1, Liaquat Ali Lund2, Mehboob Ul Hassan3, Umair Khan4,5,*

    CMES-Computer Modeling in Engineering & Sciences, Vol.143, No.1, pp. 499-513, 2025, DOI:10.32604/cmes.2025.061804 - 11 April 2025

    Abstract This paper discusses the model of the boundary layer (BL) flow and the heat transfer characteristics of hybrid nanofluid (HNF) over shrinking/stretching disks. In addition, the thermal radiation and the impact of velocity and thermal slip boundary conditions are also examined. The considered hybrid nano-fluid contains silver (Ag) and iron oxide (Fe3O4) nanoparticles dispersed in the water to prepare the Ag-Fe3O4/water-based hybrid nanofluid. The requisite posited partial differential equations model is converted to ordinary differential equations using similarity transformations. For a numerical solution, the shooting method in Maple is employed. Moreover, the duality in solutions is… More > Graphic Abstract

    Radiative Flow of Ag-Fe<sub><b>3</b></sub>O<sub><b>4</b></sub>/Water Hybrid Nanofluids Induced by a Shrinking/Stretching Disk with Influence of Velocity and Thermal Slip Conditions

  • Open Access

    ARTICLE

    Experimental Study of Forced Convective Heat Transfer in a Copper Tube Using Three Types of Nanofluids

    Zahraa N. Hussain1,*, Jamal M. Ali1,*, Hasan S. Majdi2, Abbas J. Sultan1, H. Al-Naseri3

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.2, pp. 351-370, 2025, DOI:10.32604/fdmp.2024.056292 - 06 March 2025

    Abstract The use of nanofluids as heat transfer media represents an innovative strategy to enhance heat transfer performances. This study investigates experimentally the turbulent convective heat transfer characteristics of water-based nanofluids containing TiO2, CuO, and graphene nanoplatelet (GNP) nanoparticles as they flow through a copper tube. Both the dynamic viscosity and thermal conductivity of these nanofluids were modeled and experimentally measured across varying nanoparticle concentrations (0.01, 0.02, and 0.03 vol.%) and temperatures (25°C, 35°C, and 45°C). The findings indicate that the behavior of nanofluids depends on the parameter used for comparison with the base fluid. Notably, both More > Graphic Abstract

    Experimental Study of Forced Convective Heat Transfer in a Copper Tube Using Three Types of Nanofluids

  • Open Access

    ARTICLE

    Evaluating Effect of Magnetic Field on Nusselt Number and Friction Factor of Fe3O4-TiO2/Water Nanofluids in Heat-Sink Using Artificial Intelligence Techniques

    L. S. Sundar*, Sérgio M. O. Tavares, António M. B. Pereira, Antonio C. M. Sousa

    Frontiers in Heat and Mass Transfer, Vol.23, No.1, pp. 131-162, 2025, DOI:10.32604/fhmt.2025.055854 - 26 February 2025

    Abstract The experimental analysis takes too much time-consuming process and requires considerable effort, while, the Artificial Neural Network (ANN) algorithms are simple, affordable, and fast, and they allow us to make a relevant analysis in establishing an appropriate relationship between the input and output parameters. This paper deals with the use of back-propagation ANN algorithms for the experimental data of heat transfer coefficient, Nusselt number, and friction factor of water-based Fe3O4-TiO2 magnetic hybrid nanofluids in a mini heat sink under magnetic fields. The data considered for the ANN network is at different Reynolds numbers (239 to 1874),… More >

  • Open Access

    REVIEW

    A Review of the Applications of Nanofluids and Related Hybrid Variants in Flat Tube Car Radiators

    Saeed Dinarvand*, Amirmohammad Abbasi, Sogol Gharsi

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.1, pp. 37-60, 2025, DOI:10.32604/fdmp.2024.057545 - 24 January 2025

    Abstract The present review explores the promising role of nanofluids and related hybrid variants in enhancing the efficiency of flat tube car radiators. As vehicles become more advanced and demand better thermal performance, traditional coolants are starting to fall short. Nanofluids, which involve tiny nanoparticles dispersed into standard cooling liquids, offer a new solution by significantly improving heat transfer capabilities. The article categorizes the different types of nanofluids (ranging from those based on metals and metal oxides to carbon materials and hybrid combinations) and examines their effects on the improvement of radiator performance. General consensus More >

  • Open Access

    ARTICLE

    Modeling Thermophysical Properties of Hybrid Nanofluids: Foundational Research for Future Photovoltaic Thermal Applications

    Chakar Khadija*, El Mouden Mahmoud, Hajjaji Abdelowahed

    FDMP-Fluid Dynamics & Materials Processing, Vol.21, No.1, pp. 61-70, 2025, DOI:10.32604/fdmp.2024.053458 - 24 January 2025

    Abstract The primary objective of this study is to develop an innovative theoretical model to accurately predict the thermophysical properties of hybrid nanofluids designed to enhance cooling in solar panel applications. This research lays the groundwork for our future studies, which will focus on photovoltaic thermal applications. These nanofluids consist of water and nanoparticles of alumina (Al2O3), titanium dioxide (TiO2), and copper (Cu), exploring volumetric concentrations ranging from 0% to 4% for each type of nanoparticle, and up to 10% for total mixtures. The developed model accounts for complex interactions between the nanoparticles and the base fluid, More >

  • Open Access

    ARTICLE

    Impacts of Using Al2O3 Nano Particle to Compressor Oil on Performance of Automobile Air Conditioning System

    Karam H. Mohammed1, Ashraf E. Al-Mirani1, Bashar Mahmood Ali2, Omar Rafae Alomar1,*

    Frontiers in Heat and Mass Transfer, Vol.22, No.3, pp. 839-854, 2024, DOI:10.32604/fhmt.2024.052671 - 11 July 2024

    Abstract This work involves an experimental study on the performance of automobile air-conditioning systems by adding Al2O3 nanoparticles to oil compressors to investigate their impacts on the enhancement of the speed cooling of refrigeration systems and to compare it with the system operated using only oil. The Al2O3 nanoparticles have been added to the oil compressor for different ranges of mass concentration (Ø = 0.1%, Ø = 0.15% and Ø = 0.2%). The stability of Al2O3 nanoparticles has been tested by direct observation for different time periods. The results indicated that the air conditioning system that operated by More >

  • Open Access

    ARTICLE

    A Novel Numerical Method for Simulating Boiling Heat Transfer of Nanofluids

    Yang Cao*, Xuhui Meng

    Frontiers in Heat and Mass Transfer, Vol.22, No.2, pp. 583-595, 2024, DOI:10.32604/fhmt.2024.049111 - 20 May 2024

    Abstract In this paper, a new approach called the Eulerian species method was proposed for simulating the convective and/or boiling heat transfer of nanofluids. The movement of nanoparticles in nanofluids is tracked by the species transport equation, and the boiling process of nanofluids is computed by the Eulerian multiphase method coupled with the RPI boiling model. The validity of the species transport equation for simulating nanoparticles movement was verified by conducting a simulation of nanofluids convective heat transfer. Simulation results of boiling heat transfer of nanofluids were obtained by using the commercial CFD software ANSYS Fluent More >

  • Open Access

    ARTICLE

    Numerical Examination of a Cavity Containing Nanofluid with an Upper Oscillating Wall and Baffle

    Kadhum Audaa Jehhef1, Ali J. Ali2, Salah H. Abid Aun1, Akram H. Abed3,*

    Frontiers in Heat and Mass Transfer, Vol.22, No.2, pp. 557-581, 2024, DOI:10.32604/fhmt.2024.047814 - 20 May 2024

    Abstract The cavity with lid-driven is greatly used in mixing, coating, and drying applications and is a substantial issue in the study of thermal performance rate and fluid field. A numerical approach is presented to study the thermal distribution and passage of fluid in a lid-driven cavity with an upper oscillating surface and an attached baffle. The walls of a cavity at the left and right were maintained at 350 and 293 K, respectively. The upper oscillating surface was equipped with a variable height to baffle to increase the convection of the three kinds of TiO,… More >

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