Dynamics of magnetohydrodynamic and ferrohydrodynamic natural convection flow of ferrofluid inside an enclosure under non-uniform magnetic field

Iftikhar, Babar; Siddiqui, Muhammad Arshad; Javed, Tariq

doi:10.1016/j.aej.2022.11.011

Cited by 20 publications

(2 citation statements)

References 49 publications

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“…The study concluded that optimal heat transfer and irreversibility phenomena occur for all Hartmann numbers when horizontal walls move in opposite directions. Iftikhar et al, [40] examine how non-uniform magnetic fields affect heat transfer and entropy generation in the convection flow of ferrofluid inside a cavity in the presence of thermal radiation. The results showed that as the Hartmann number increased, there was a decrease in both heat transfer and total entropy.…”

Section: Entropy Generation In Natural Convective Heat Transfermentioning

confidence: 99%

A Review of Entropy Generation in Rectangular Cavities

Azlina Jumadi,

Norazam Arbin,

Habibis Saleh

et al. 2024

ARFMTS

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Entropy generation is a thermodynamic system attribute representing the direction or result of spontaneous changes within the system. This article uses an entropy generation analysis to examine the thermodynamic optimum in square cavities. Numerous studies have documented using entropy generation analysis as an evaluation measure. This research will utilise entropy generation in various types of convective heat transfer under multiple factors. Furthermore, the problem formulation and outcomes regarding entropy generation in square cavities are presented and summarised in a table. To summarise, the primary goal in dealing with this problem is to get an ideal configuration that maximises energy efficiency through minimising entropy generation and enhancing heat transfer rate. This review study sets the framework for future investigations into entropy production analysis to boost energy efficiency.

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Section: Entropy Generation In Natural Convective Heat Transfermentioning

confidence: 99%

A Review of Entropy Generation in Rectangular Cavities

Azlina Jumadi,

Norazam Arbin,

Habibis Saleh

et al. 2024

ARFMTS

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“…They found out that the heat transfer coefficient and the Nusselt number are enhanced by 31% and 12.8%, respectively, for power-law index of 1.5 compared to Newtonian fluid. Iftikhar et al (2023) introduced the term ferrofluid when added a solid magnetic particles in the base liquid. They investigated the influence of variable magnetic field with the impact of ferrohydrodynamic and MHD and concentration of ferroparticles on natural convective heat transfer.…”

Section: Hff 342mentioning

confidence: 99%

Baffle effects on enhancing cooling performance of electronic components by nanofluid in a horizontal channel

Armou

Hssain

Nouari

et al. 2023

HFF

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Purpose The purpose of this study is to investigate the impact of varying baffle height and spacing distance on heat transfer and cooling performance of electronic components in a baffled horizontal channel, using a Cu-H2O nanofluid under mixed convection and laminar flow. Design/methodology/approach The mathematical model is two-dimensional and comprises a system of four governing equations, such as the conservation of continuity, momentum and energy. To obtain numerical solutions for these equations, the finite volume method was used for discretization. A validation process was performed by comparing this study’s results with those of previously published studies. The comparison revealed a close agreement. The numerical study was performed for a wide range of key parameters: The baffle height (0 ≤ h ≤ 0.7), the spacing distance between baffle and blocks (0.25 ≤ w ≤ 3), the Grashof and Reynolds numbers are kept equal to 104 and 75, respectively, the channel aspect ratio is L/H = 10, and the volume fraction of Cu nanoparticles is fixed at φ = 5%. Findings The results of the study reveal a significant improvement in heat transfer in terms of total Nusselt number of the top and bottom hot components, which exhibited an improvement of 16.89% and 17.23% when the baffle height increases from h = 0 to h = 0.7. Additionally, the study found that reducing the distance between the baffle and the electronic components up to a certain limit can improve the heat transfer rate. Therefore, the optimal height of the baffle was found to be no lower than 0.6, and the recommended distance between the heaters and the baffle was 0.5. Originality/value This study provides valuable insights into the optimization of the design of baffled channels for improved heat transfer performance. The findings of study can be used to improve heat exchangers and cooling systems in various applications. The use of Cu-H2O nanofluid under mixed convection and laminar flow conditions in channel with baffle and electronic components is also unique, making this study an original contribution to the field.

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Spinel Sensors and Biosensors

Abou Hammad,

El Nahrawy

2023

Handbook of Nanosensors

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Dynamics of magnetohydrodynamic and ferrohydrodynamic natural convection flow of ferrofluid inside an enclosure under non-uniform magnetic field

Cited by 20 publications

References 49 publications

A Review of Entropy Generation in Rectangular Cavities

A Review of Entropy Generation in Rectangular Cavities

Baffle effects on enhancing cooling performance of electronic components by nanofluid in a horizontal channel

Spinel Sensors and Biosensors

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