Numerical simulation of three-dimensional thermo-solutal convection of micropolar multi-walled carbon nanotubes water nanofluid stabilized by lignin and sodium polycarboxylate - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Thermal Analysis and Calorimetry Année : 2022

Numerical simulation of three-dimensional thermo-solutal convection of micropolar multi-walled carbon nanotubes water nanofluid stabilized by lignin and sodium polycarboxylate

Résumé

A computational analysis has been performed in this study to solve three-dimensional thermo-solutal natural convection in a differentially heated cubical enclosure filled with micropolar CNT/water nanofluid stabilized by two types of surfactants lignin and sodium polycarboxylate. The work is carried out for different pertinent parameters as Rayleigh number (104 ≤ Ra ≤ 106), micropolar parameter (0 ≤ K ≤ 10), buoyancy ratio (−1 ≤ N ≤ 0) and nanoparticles’s volume fraction (0.0055% ≤φ≤ 0.557%). It is observed that the heat and mass transfer rates are lower for a micropolar nanofluid model when compared to the pure nanofluid model. In fact, the enhancement of micropolar parameter results a decrease in average Nusselt and Sherwood numbers. The use of lignin as a surfactant ameliorates heat and mass transfer rate and nanofluid flow better than the use of sodium polycarboxylate as a surfactant. The nanoparticles volume fraction can be used as a control element for heat rate and fluid flow. Thus, for a nanoparticles volume concentration less than the critical value, the flow intensity is ameliorated and is deteriorated when it exceeds this value.
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Dates et versions

hal-03186405 , version 1 (31-03-2021)

Identifiants

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Nessrin Manaa, Awatef Abidi, Patrice Estellé, Mohammed Naceur Borjini. Numerical simulation of three-dimensional thermo-solutal convection of micropolar multi-walled carbon nanotubes water nanofluid stabilized by lignin and sodium polycarboxylate. Journal of Thermal Analysis and Calorimetry, 2022, 147 (4), pp.2985-3005. ⟨10.1007/s10973-021-10667-9⟩. ⟨hal-03186405⟩
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