Natural Convection and Thermal Radiation Influence on Nanofluids in a Cubical Cavity

Moutaouakil, Lahcen El; Boukendil, Mohammed; Zrikem, Z.; Abdelbaki, Abdelhalim

doi:10.18280/ijht.380107

Cited by 11 publications

(6 citation statements)

References 24 publications

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“…By developing a mathematical model Buongiorno [2] made a comprehensive survey of nanofluid transport mechanisms. A number of researchers studied saturating nanofluid is well documented by researchers [3][4][5][6][7][8] to mention a few.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis MHD Bioconvective Flow of Micropolar Nanofluid in Porous Medium

Ayano¹

2021

IJHT

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The present study dealt with heat and mass transfer rate, and motile micro-organisms for convective micropolar nanofluid flow in a porous medium. The nanofluid contains the influence of both Brownian motion and thermodiffusion (thermophoresis). The problem considered finds applications in the areas of engineering such as reducing greenhouse effects and in the pharmaceutical applications enhancing mixing and slowing down settling particles can be mentioned. The numerical results are obtained and discussed. The results obtained suggest that micropolar fluids enhance the flow and decrease the temperature, nanoparticles concentration and gyrotactic microorganisms concentration profiles compared to viscous fluid. It is also noted that Hall parameter increases skin friction, the heat transfer rate, the mass transfer rate and density of the motile microorganisms.

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Section: Introductionmentioning

confidence: 99%

Comparative Analysis MHD Bioconvective Flow of Micropolar Nanofluid in Porous Medium

Ayano¹

2021

IJHT

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“…While, Al-Rashed et al, [15] examined the entropy field. Moutaouakil et al, [51] cavity is filled of different water based nanofluids (Cu, Al2O3, Ag, TiO2). It is heated by three parallel and identical elements for different inclinations.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Analysis of the Thermal Behavior of Alumina-Water Nanofluid Inside Hexagonal and Octagonal Enclosed Domain

Ghoben¹,

Hussein²

2023

ARFMTS

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The current work focused on the study of the laminar and steady free convection of Aluminum Oxide / Water nanofluid inside cavities. Two different cavities have the same volume but different overall surface area and count of walls are studied. These cavities are heated differentially on the vertical square side walls which of identical area and dimensions for both cavities. The other vertical walls of these cavities have hexagonal and octagonal shapes. The first cavity has eight walls while the second has ten walls. The study accomplished for solid particles volume fraction and Rayleigh number ranges of (φ = 0.01, 0.03, 0.05) and (103 ≤ Ra ≤ 106). The study interested highly by the effect of the cavity geometry parameters including the lateral cross section, the height, the number of walls on the flow and heat transfer. Other flow parameters are recognized on the fluid flow and heat transfer fields like the nanoparticles volume fraction and the Rayleigh number. The results indicated that the surface area increase by means the additional walls has an observed effect on guiding the results. Where the octagonal cavity has better enhancement in heat transfer especially at (Ra=104 and 105). The percent increase in Nu over the hexagonal cavity is (0.6, 0.8, 0.7, 0.3) for the specified Ra range.

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“…A conductive Ahmed body was centered inside the enclosure. Moutaouakil et al [30] using three parallel heating elements on the left vertical sidewall which had three inclinations. The cavity filled with (Cu, Al2O3, Ag, TiO2) water based nanofluids.…”

Section: Introductionmentioning

confidence: 99%

The natural convection inside a 3D triangular cross section cavity filled with nanofluid and included cylinder with different arrangements

Ghoben¹,

Hussein²

2022

Diagnostyka

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In this paper the laminar unsteady natural convection heat transfer of (Al2O3-water) nanofluid inside 3D triangular cross section cavity was investigated. The cavity was heated differentially, the vertical walls were kept at different constant temperatures. The left hot and the right cold. The effect of the solid volume fraction was examined for two values and compared with the pure water results. The (Ra) range studied was (103 ≤ Ra ≤ 106). Inserting cylindrical body inside the cavity also investigated in three cases. One concentric cylinder has radius (15%) of the cavity side length. The other cases were of two cylinders having radius (7.5%) of the cavity side length, aligned vertically or nonaligned. The results show that the higher solid volume fraction gives the maximum enhancement of the average (Nu) and this enhancement increases with (Ra) increase. For the cases with inner cylinders, the average (Nu) enhanced for the case of double cylinders over single cylinder. On other hand, the nonaligned position of the cylinders giving more enhancement than other position. As like as, the location of maximum horizontal or vertical velocities were varied with the cylinders position while (Ra) has no effect.

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Natural Convection and Thermal Radiation Influence on Nanofluids in a Cubical Cavity

Cited by 11 publications

References 24 publications

Comparative Analysis MHD Bioconvective Flow of Micropolar Nanofluid in Porous Medium

Comparative Analysis MHD Bioconvective Flow of Micropolar Nanofluid in Porous Medium

Three-Dimensional Analysis of the Thermal Behavior of Alumina-Water Nanofluid Inside Hexagonal and Octagonal Enclosed Domain

The natural convection inside a 3D triangular cross section cavity filled with nanofluid and included cylinder with different arrangements

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