Impact of Cu,Al2O3-water hybrid nanofluid on natural convection inside a square cavity with two heat-generating bodies

Hidki, Rachid; Moutaouakil, Lahcen El; Boukendil, Mohammed; Charqui, Zouhair; Zrikem, Z.; Abdelbaki, Abdelhalim

doi:10.1016/j.matpr.2022.09.292

Cited by 12 publications

(3 citation statements)

References 29 publications

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“…A partial periodic magnetic field may be an effective controller wherever fluid velocity and temperature must be kept under control inside the enclosure. Numerical analysis was done to determine whether natural convection would occur in a square cavity that contained a Cu, Al2O3, and water hybrid nanofluid and was internally two blocks of heat production provide the heat [106]. The two identically sized blocks are positioned at the same height and produce the same amount of heat.…”

Section: Free Convection In a Classical Cavity Filled With Hybrid Nan...mentioning

confidence: 99%

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A Comprehensive Numerical Analysis of Natural Convection in Nanofluids within Various Enclosure Geometries: A Review

Abbas,

Hussein

2023

IJHT

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This comprehensive review elucidates recent numerical and empirical investigations of laminar-scale, free convection heat transport within two and three-dimensional enclosures filled with nanofluids and hybrid nanofluids. A particular emphasis is placed on previously explored enclosure geometries, ranging from simplistic to complex regular shapes. It is identified that a research gap exists within three-dimensional numerical investigations of both simple and complex enclosures. The study reveals that the local peak of the Nusselt number on the surfaces of the cylinder and the enclosure manifests at the locations where the shortest distance is observed between the cylinder surface and the enclosure wall. At lower Rayleigh numbers (Ra), the heat transfer demonstrates a decreasing trend with increasing values of volume fraction for oxide nanofluids. Upon increasing Ra, total heat generation is noted to decrease for all volume fractions and all positions of the conductive baffle. The Bejan and average Nusselt numbers display an inverted relationship to each other for the same range of Rayleigh numbers and solid volume fractions. Interestingly, the average Bejan numbers augment and the entropy generations remain approximately constant at high Rayleigh numbers. The analysis further unveils that the heat transfer rate experiences an increase with higher values of solid volume fraction and Rayleigh numbers. The average Nusselt number shows an increasing trend with the rise of the Hartmann number. Additionally, the heat transfer rate witnesses an enhancement with the increased concentration of Carbon Nanotube (CNT) particles and Rayleigh numbers. This review underscores the need for future research to address the present gaps and to further our understanding of heat transfer dynamics in nanofluid-filled enclosures.

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Section: Free Convection In a Classical Cavity Filled With Hybrid Nan...mentioning

confidence: 99%

“…There are a few higher-order models that attempt to incorporate particle interactions by integrating higher-order terms such as those proposed by Jeffrey [106]:…”

Section: The Nanofluids Governing Equationsmentioning

confidence: 99%

A Comprehensive Numerical Analysis of Natural Convection in Nanofluids within Various Enclosure Geometries: A Review

Abbas,

Hussein

2023

IJHT

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“…The combination of these mentioned improvements can lead to more efficient cooling/heating of various elements. For example, Hidki et al [5] have studied the thermal convection of a Cu+Al 2 O 3 /water hybrid nanoliquid in a closed chamber with two heatgenerating blocks. Simulations have shown that the presence of solid particles reduces the temperature of the blocks by up to 18%.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Pseudoplastic Nanofluid Natural Convection in a Cavity with a Heat-Generating Unit and Solid Finned Heat Sink

Loenko,

Sheremet

2023

Mathematics

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The power-law nanofluid natural convection in a chamber with a thermally generating unit and a solid ribbed structure has been studied in this work. A mixture of carboxymethylcellulose with water and copper nanoparticles is a working fluid illustrating pseudoplastic properties. The effective properties of the nanoliquid have been described by experimental correlations reflecting the temperature effect. The governing equations have been formulated on the basis of the conservation laws of mass, momentum and energy employing non-primitive parameters such as stream function and vorticity. The defined boundary value problem has been worked out by the finite difference technique using an independently developed calculation system. The Rayleigh number is fixed for analysis (Ra = 105). The paper analyzes the influence of the nanoparticles volume fraction, an increase in which reduces the temperature in the case of the one edge presence. An analysis of the rib height has shown that its growth leads to a weakening of the convective heat transfer, but at the same time, the source temperature also decreases. Increasing the number of fins from 1 to 3 also helps to reduce the average temperature of the heat-generated element by 15%.

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Numerical Analysis of Mixed Convection Coupled with Thermal Radiation in a Ventilated Channel Containing Various Heat-Generating Blocks

Hidki,

El Moutaouakil,

Boukendil

et al. 2023

Lecture Notes in Mechanical Engineering

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Impact of Cu,Al2O3-water hybrid nanofluid on natural convection inside a square cavity with two heat-generating bodies

Cited by 12 publications

References 29 publications

A Comprehensive Numerical Analysis of Natural Convection in Nanofluids within Various Enclosure Geometries: A Review

A Comprehensive Numerical Analysis of Natural Convection in Nanofluids within Various Enclosure Geometries: A Review

Mathematical Modeling of Pseudoplastic Nanofluid Natural Convection in a Cavity with a Heat-Generating Unit and Solid Finned Heat Sink

Numerical Analysis of Mixed Convection Coupled with Thermal Radiation in a Ventilated Channel Containing Various Heat-Generating Blocks

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