Three-Dimensional Numerical Analysis on Performance Enhancement of Micropolar Hybrid Nanofluid in Comparison with Simple Nanofluid

The objectives of the present research work are the three-dimensional computational analysis and predictions on double-diffusive natural convection in a cubic cavity filled with Cu-Al 2 O 3 /water micropolar hybrid nanofluid. The governing equations are carefully modified employing vorticity-vector...

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Bibliographic Details
Published inHeat transfer engineering Vol. 42; no. 18; pp. 1590 - 1610
Main Authors Manaa, Nessrin, Abidi, Awatef, Saleel C., Ahamed, Madiouli, Jamel, Borjini, Mohammed Naceur
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 11.10.2021
Taylor & Francis Ltd
Subjects
Aluminum oxide
Buoyancy
Computational fluid dynamics
Finite volume method
Free convection
Heat transfer
Mass transfer
Mathematical models
Nanofluids
Nanoparticles
Numerical analysis
Parameters
Performance enhancement
Three dimensional analysis
Vorticity
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Summary:The objectives of the present research work are the three-dimensional computational analysis and predictions on double-diffusive natural convection in a cubic cavity filled with Cu-Al 2 O 3 /water micropolar hybrid nanofluid. The governing equations are carefully modified employing vorticity-vector potential formulation and are solved by the finite volume method. Performance enhancement of Cu-Al 2 O 3 /water micropolar hybrid nanofluid is judiciously compared with the Cu/water simple nanofluid. Besides, the influences of concentration of nanoparticles, Rayleigh number, buoyancy ratio, and micropolar vortex parameter on the flow field and heat transfer are critically analyzed. The results show that heat and mass transfer rates are lower for a micropolar nanofluid model when compared to the pure nanofluid model. The hybrid micropolar nanofluid displays more heat and mass transfer rates for thermal buoyancy-dominated zones when compared with traditional nanofluid. Conversely, the heat and mass transfer rates are decreased when using micropolar hybrid nanofluid for the solutal-dominated regime. The enhancement of micropolar viscosity parameter results in a decrease of average Nusselt and Sherwood numbers which are more perceptible in the thermal buoyancy-dominated flow.
ISSN:0145-7632
1521-0537
DOI:10.1080/01457632.2020.1807106