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Heat Transfer Research

Publicado 18 números por año

ISSN Imprimir: 1064-2285

ISSN En Línea: 2162-6561

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SIMULATION OF NATURAL CONVECTION OF AN Al2O3/WATER NANOFLUID IN A COMPLEX WAVY-WALL CAVITY USING THE LATTICE BOLTZMANN METHOD

Volumen 50, Edición 15, 2019, pp. 1513-1530
DOI: 10.1615/HeatTransRes.2018018737
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SINOPSIS

In this paper, two-dimensional natural convection of an Al2O3/water nanofluid is presented using the lattice Boltz-mann method. Natural convection occurs in a cavity with two complex-wavy vertical walls, as hot and cold surfaces while the top and bottom ones are insulated. The effect of pertinent parameters such as the volume fraction of nanoparticles, Rayleigh numbers, and complex-wavy-wall geometry parameters on flow and heat transfer fields are investigated in detail. Results show an increase in the Nusselt number with volume fraction for Rayleigh numbers in the range 103 < Re < 106. Moreover, the effect of wavy-surface geometry parameters such as the wavelength and amplitude ratio, on heat transfer is studied, and an optimum value for heat transfer rate is obtained.

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CITADO POR
  1. Cho Ching-Chang, Effects of porous medium and wavy surface on heat transfer and entropy generation of Cu-water nanofluid natural convection in square cavity containing partially-heated surface, International Communications in Heat and Mass Transfer, 119, 2020. Crossref

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