The effect of constant magnetic field on convective heat transfer of Fe3O4/water magnetic nanofluid in horizontal circular tubes

Sun, Bin; Guo, Yong; Yang, Di; Li, Hongwei

doi:10.1016/j.applthermaleng.2020.114920

Cited by 90 publications

(17 citation statements)

References 51 publications

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“…Additionally, numerical and analytical results of heat transfer and skin friction were also highlighted. Sun et al 12 studied experimentally the variation of heat transfer rate for nanofluid (Fe 3 O 4 /H 2 O) inside the horizontal circular tubes under the effects of magnetic field and found a direct relationship between magnetic field strength and rate of heat transfer. Kumar et al 13 numerically compared the transfer rate of heat for ordinary fluid and nanofluid (Al 2 O 3 /H 2 O) systems, and declared that with the use of nanofluid, decrease in temperature, thermal resistance and power consumption is observed whereas, the reliability of the electronic chips increases by 70% with the use of nanofluid.…”

Section: Introductionmentioning

confidence: 99%

Numerical investigation for rotating flow of MHD hybrid nanofluid with thermal radiation over a stretching sheet

Shoaib

Raja

Sabir

et al. 2020

Sci Rep

161

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This research investigates the heat and mass transfer in 3-D MHD radiative flow of water based hybrid nanofluid over an extending sheet by employing the strength of numerical computing based Lobatto IIIA method. Nanoparticles of aluminum oxide (Al2O3) and silver (Ag) are being used with water (H2O) as base fluid. By considering the heat transfer phenomenon due to thermal radiation effects. The physical flow problem is then modeled into set of PDEs, which are then transmuted into equivalent set of nonlinear ODEs by utilizing the appropriate similarity transformations. The system of ODEs is solved by the computational strength of Lobatto IIIA method to get the various graphical and numerical results for analyzing the impact of various physical constraints on velocity and thermal profiles. Additionally, the heat transfers and skin friction analysis for the fluid flow dynamics is also investigated. The relative errors up to the accuracy level of 1e-15, established the worth and reliability of the computational technique. It is observed that heat transfer rate increases with the increase in magnetic effect, Biot number and rotation parameter.

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Section: Introductionmentioning

confidence: 99%

Numerical investigation for rotating flow of MHD hybrid nanofluid with thermal radiation over a stretching sheet

Shoaib

Raja

Sabir

et al. 2020

Sci Rep

161

View full text Add to dashboard Cite

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“…The migration of the nanoparticles to the surface of the tube leads to an increase in the concentration of local particles on the surface of the tube, and then the heat can be transferred to the nanoparticles, leading to an enhance in the local thermal conductivity. In addition, when magnetic force (not the heat), has a significant impact on magnetic nanoparticles, particles stick together and form chains oriented along the direction of the applied field, and particles form coupling, triplet and short chains in the direction of the external magnetic field, at last improving the thermal conductivity [24]. On the other hand, the accumulation of particles near the surface of the pipe leads to the increase of friction on the surface of the pipe, which disturbs the flow pattern and thermal boundary layer, further increases the local convective heat transfer.…”

Section: Influence Of Magnetic Field Strength On Heat Transfer Coefficient Of Magnetic Nanofluidsmentioning

confidence: 99%

Research on convective heat transfer characteristics of Fe3O4 magnetic nanofluids under vertical magnetic field

et al. 2022

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This paper focuses on the convective heat transfer characteristics of Fe3O4 /Water magnetic nanofluids under laminar and turbulent conditions. After verifying the accuracy of the experimental apparatus, the effects of magnetic field strength, concentration, Reynolds number and temperature on the convective heat transfer coefficient have been studied. The convective heat transfer characteristics of nanofluids under laminar and turbulent flow conditions were studied in depth, and the influence of each factor on the heat transfer coefficient was analyzed by orthogonal experimental design method. Under the laminar flow conditions, the convective heat transfer of magnetic nanofluids performed best when the Reynolds number was 2000, the magnetic field strength was 600, the temperature was 30? and the concentration was 2%. And the convective heat transfer coefficient (h) increased by 3.96% than the distilled water in the same conditions. In turbulent state, the convective heat transfer of magnetic nanofluids performed the best when the Re was 6000, the magnetic field strength was 600, the temperature was 40? and the concentration was 2%. The h increased by 11.31% than the distilled water in the same Reynolds number and the magnetic field strength conditions.

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“…For this purpose, the Atangana-Baleanu derivative AB D σ τ of order σ is introduced in Eqs. (13) and 14at the place of local time derivative ∂ ∂τ as following…”

Section: Development Of Unit-free Fractional Modelmentioning

confidence: 99%

“…Sreenivasulu et al [12] contributed a computational model with numerical results to explore the impacts of axial slip and Lorentzian force on nanofluid flow past an extending surface. In experimental work, Sun et al [13] measured the convectional heat transfer coefficient for migration of Fe 3 O 4 -water nanofluid through a circular tube subject to the influence of a magnetic field. The noteworthy role of gold nanoparticles in double-diffusive transport of blood inside an asymmetric channel under Hall effects is graphically evaluated by Asha and Sunitha [14].…”

Section: Introductionmentioning

confidence: 99%

Double Slip Effects and Heat Transfer Characteristics for Channel Transport of Engine Oil With Titanium and Aluminum Alloy Nanoparticles: A Fractional Study

et al. 2021

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The core purpose of this study is the formulation of a fractional model to anticipate the improvement in heat transfer potential of a particular diathermal oil i.e. engine oil under thermal radiative flux. The magnetohydrodynamic (MHD) freely convectional transport of two different types of engine oil based nanofluids comprised of Titanium (Ti 6 Al 4 V) and Aluminum (AA7075) alloy nanoparticles is considered in a vertical channel frame. In addition, the channel is assumed to be embedded in a permeable media and slip effects are observed at both ends. The transmutation of the governed model from classical to fractional environment is achieved by operating the Atangana-Baleanu derivative. To procure solutions of the proposed fractional model, Laplace transform is employed with an adequate choice of some unit-free quantities. Numerical simulations are performed and outcomes are conveyed through graphical illustrations to discuss the contribution of considered alloy nanoparticles in flow mechanism and thermal behavior of engine oil. It is reported that Ti 6 Al 4 V is more effective to enhance the thermal efficiency of engine oil as compared to AA7075. It is claimed that there is an augmentation of 32.50% in the heat transfer rate of engine oil due to Ti 6 Al 4 V, which is almost twice the improvement in heat transfer rate provided by AA7075. Furthermore, the slip parameters lead to expedite the channel flow of engine oil. This study culminates that Ti 6 Al 4 V and AA7075 significantly improve the lubrication and cooling characteristics of engine oil.

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The effect of constant magnetic field on convective heat transfer of Fe3O4/water magnetic nanofluid in horizontal circular tubes

Cited by 90 publications

References 51 publications

Numerical investigation for rotating flow of MHD hybrid nanofluid with thermal radiation over a stretching sheet

Numerical investigation for rotating flow of MHD hybrid nanofluid with thermal radiation over a stretching sheet

Research on convective heat transfer characteristics of Fe3O4 magnetic nanofluids under vertical magnetic field

Double Slip Effects and Heat Transfer Characteristics for Channel Transport of Engine Oil With Titanium and Aluminum Alloy Nanoparticles: A Fractional Study

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