3D magneto-convective heat transfer in CNT-nanofluid filled cavity under partially active magnetic field

Al‐Rashed, Abdullah A.A.A.; Kolsi, Lioua; Öztop, Hakan F.; Aydi, Abdelkarim; Malekshah, Emad Hasani; Abu‐Hamdeh, Nidal H.; Borjini, Mohamed Naceur

doi:10.1016/j.physe.2018.02.011

Cited by 91 publications

(23 citation statements)

References 19 publications

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“…The results show that the dimension of the heater is the most important parameter affecting heat transfer. Al-Rashed et al (2018a) studied the magnetoconvection of CNTnanofluid. It was found that the inclination of the magnetic field is an optimizing parameter.…”

Section: Introductionmentioning

confidence: 99%

Control of the free convective heat transfer using a U-shaped obstacle in an Al2O3-water nanofluid filled cubic cavity

Al-Sayagh¹

2021

Int. j. adv. appl. sci.

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This paper deals with the study of free convection in a 3D enclosure filled with Al2O3-nanofluid and equipped with a U-shaped obstacle. The used U-shaped obstacle is considered perfectly conductive. The effect of the dimension and the orientation of the obstacle is investigated. In addition, the parameters governing the problem are varied as Rayleigh number (103 to 106), and nanoparticles volume fraction (0 to 7.5%). Results are depicted in terms of flow structures, temperature fields, and Nusselt number. Results show that the obstacle dimension and orientation can control the flow and optimize the heat transfer and the addition of nanoparticles enhances significantly Nusselt number.

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Section: Introductionmentioning

confidence: 99%

Control of the free convective heat transfer using a U-shaped obstacle in an Al2O3-water nanofluid filled cubic cavity

Al-Sayagh¹

2021

Int. j. adv. appl. sci.

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“…They used a single-phase model for nanofluid modeling, and proposed a mathematical model for the determination of the average Nusselt number. Al-Rashed et al [22] performed a numerical flow analysis of a 3D CNTnanofluid filled enclosure under a uniform active magnetic field. Results showed that the location of magnetic field has a significant effect on the rate of heat transfer, even if the Hartmann number is constant.…”

Section: Introductionmentioning

confidence: 99%

Immersed boundary method for MHD unsteady natural convection around a hot elliptical cylinder in a cold rhombus enclosure filled with a nanofluid

Hosseinjani

Roohi

2021

SN Appl. Sci.

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In this study, the numerical investigation of the natural convection heat transfer around a hot elliptical cylinder inside a cold rhombus enclosure filled with a nanofluid in the presence of a uniform magnetic field is conducted. An immersed boundary method as a computational tool has been extended and applied to solve the problem. The influence of various parameters such as cylinder diameters (a, b), Hartmann number (Ha = 0, 50 and 100), nanofluid volume fraction ($$\varphi = 0 , 2.5\% and 5\%$$ φ = 0 , 2.5 % a n d 5 % ), and Rayleigh number (Ra = 103, 104, 105, 106, and 107) has been studied. Streamlines and isotherms contours as well as average Nusselt number have been specified for different modes. An equation for the average Nusselt number as a function of mentioned parameters is presented in this paper. The results show that at lower Ra numbers of Ra = 103 and 104, the magnetic field effect is negligible. However, at higher Rayleigh numbers, the average Nusselt number (Nuave) decreases with the increasing Ha number. The maximum decrease in Nuave at Ra = 105, 106 and 107are calculated −8.15%, −23.4% and −27.3%, respectively. An asymmetry-unsteady flow is observed at $${\text{Ra}} = 10^{7}$$ Ra = 10 7 for Ha = 0. However, at higher Ha numbers a steady-symmetrical flow is formed.

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“…Nanofluids' applications are shown today in heat exchangers, impingement jets, renewable energies, heating and tempering processes, automotive industries, electronic cooling, lubrication, medicine, combustion, and so forth. Figure shows the different applications of NF.…”

Section: Introductionmentioning

confidence: 99%

Magnetohydrodynamics convection in nanofluids‐filled cavities: A review

et al. 2020

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This manuscript reviews most of the available papers on the nanofluids convection in different shapes of cavities and enclosures, applying a magnetic field. The papers have been categorized into two major classes: natural convection and mixed convection. Important research have been described more and then two tables demonstrate a summary of the papers. Statistical considerations are mentioned to realize some helpful information on the scope. Most of the results demonstrated that the heat transfer usually enhances with an increase in nanoparticles volume concentration and Rayleigh number and shows inverse behavior with growth in the Hartmann number. The average Nusselt number will decrease with any increase in the Richardson number.Moreover, magnetohydrodynamic constraints the heat transfer and therefore, can play as an applicable controller of heat transfer applications. K E Y W O R D Scavity, mixed convection, nanofluids, natural convection

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3D magneto-convective heat transfer in CNT-nanofluid filled cavity under partially active magnetic field

Cited by 91 publications

References 19 publications

Control of the free convective heat transfer using a U-shaped obstacle in an Al2O3-water nanofluid filled cubic cavity

Control of the free convective heat transfer using a U-shaped obstacle in an Al2O3-water nanofluid filled cubic cavity

Immersed boundary method for MHD unsteady natural convection around a hot elliptical cylinder in a cold rhombus enclosure filled with a nanofluid

Magnetohydrodynamics convection in nanofluids‐filled cavities: A review

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