Mixed Convection in a Cubical Cavity With Active Lateral Walls and Filled With Hybrid Graphene–Platinum Nanofluid

Hussein, Ahmed Kadhim; Kolsi, Lioua; Almeshaal, Mohammed A.; Liu, Dong; Ali, Hafız Muhammad; Ahmed, Israa S.

doi:10.1115/1.4043758

Cited by 27 publications

(8 citation statements)

References 36 publications

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“…They deduced that, the Nusselt number increases by increasing the solid concentration and decreases with the heat source length and Richardson number. Other results related to the subject can be found in [23, 32–41].…”

Section: Introductionmentioning

confidence: 99%

Effect of magnetic field on the mixed convection in double lid‐driven porous cavities filled with micropolar nanofluids

Ahmed

Hussein

Mansour

et al. 2022

Numerical Methods Partial

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The effect of magnetic field inclination and double lid-driven on the mixed convection in a square cavity is investigated based on the local thermal non-equilibrium model. The cavity was filled with a copper-water micropolar nanofluid saturated with a porous medium. The top and bottom walls are considered moving to the left or right directions at a constant velocity. In the current work, the ranges of parameters are as follow: Hartmann number (0 ≤ Ha ≤ 50), length of the heat source (0.2 ≤ B ≤ 0.8), Richardson number (0 ≤ Ri ≤ 10), Reynolds number (0 ≤ Re ≤ 100), location of the heat source (0.3 ≤ D ≤ 0.7), vortex to molecular viscosity ratio (0 ≤ Δ ≤ 2), Nield number (1 ≤ Q ≤ 100) and solid volume fraction (0 ≤ 𝜑 ≤ 0.1). It was found that the heat transfer decreases as the dimensionless heat source location and the Nield number increase. Also, the growing in the Nield number enhances the rate of the heat transfer for the porous phase and increases the thermal equilibrium state of the system.

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Section: Introductionmentioning

confidence: 99%

Effect of magnetic field on the mixed convection in double lid‐driven porous cavities filled with micropolar nanofluids

Ahmed

Hussein

Mansour

et al. 2022

Numerical Methods Partial

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“…The authors concluded that the magnetic field opposes both the buoyancy and capillary forces. Complex boundary conditions were imposed in the work of Hussein et al (2019) who considered the mixed convection of hybrid Gr-Pl nanofluid. They concluded that the addition of nanoparticles contributes to the apparition of more complex flow structures.…”

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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“…Recently, Hafiz Muhammad Ali et al [42][43][44] developed and reported excellent outcomes on the nanofluids heat transfer, numerically and experimentally in different flow regimes. Also, they [45][46][47][48] studied the applications of hybrid nanofluids in solar energy and other heat transfer claims. One of the most important topics in this field is the magnetic effect on the nanofluid behaviors which is widely investigated by the Chamkha et al [49][50][51][52][53][54][55][56][57][58][59][60][61] in different geometries.…”

Section: Introductionmentioning

confidence: 99%

Mixed Convection Heat Transfer of Sio2-Water and Alumina-Pao Nano-Lubricants Used in a Mechanical Ball Bearing

Hatami¹,

Ali²,

Alsabery³

et al. 2021

Journal of Thermal Engineering

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In this study, the mixed convection heat transfer in a mechanical ball bearing filled with nano-lubricants were investigated theoretically. In our case, the bearing including eight balls revolving in counter clockwise while the inner shaft rotates in clockwise direction and the inner and outer walls of bearing were kept at constant hot and cold temperatures, respectively. Two kinds of nano-lubricants SiO2-water and Alumina-Polyalphaolefin (PAO) with different shapes of nanoparticles were considered. The governing equations including velocity, pressure, and temperature formulation were solved based on the Galerkin finite element method. The governing parameters such as nanoparticle volume fraction, Reynolds and Rayleigh numbers, etc., were discussed. It turns out that the average Nusselt number increases by increasing the nanoparticle volume fraction (averagely 15% for each 0.02 increase) and the oil-based nano-lubricant has greater Nusselt number than the water based one. More importantly, the Nono-rod Alumina was found to show much greater heat transfer performance (averagely 5%) than the spherical alumina nanoparticles and nano-rod Alumina-PAO has the best performance and maximum Nusselt numbers for the heat transfer.

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Mixed Convection in a Cubical Cavity With Active Lateral Walls and Filled With Hybrid Graphene–Platinum Nanofluid

Cited by 27 publications

References 36 publications

Effect of magnetic field on the mixed convection in double lid‐driven porous cavities filled with micropolar nanofluids

Effect of magnetic field on the mixed convection in double lid‐driven porous cavities filled with micropolar nanofluids

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

Mixed Convection Heat Transfer of Sio2-Water and Alumina-Pao Nano-Lubricants Used in a Mechanical Ball Bearing

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