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Entropy generation and heat transfer analysis of alumina and carbon nanotubes based hybrid nanofluid inside a cavity
Physica Scripta ( IF 2.9 ) Pub Date : 2021-05-24 , DOI: 10.1088/1402-4896/ac0077
P Sreedevi , P Sudarsana Reddy

This article presents numerical investigation of heat transport, flow and entropy generation features of hybrid nanofluid, made up of Aluminum oxide, single – walled carbon nanotubes as nanoparticles and Ethylene glycol as base fluid, inside a square cavity. The resultant non-dimensional equations are numerically assessed by employing finite difference technique. The variations in the scatterings of isotherms, streamlines and entropy generation with diverse values of radiation parameter $(0.01\leqslant {\rm{R}}\leqslant 0.1),$ volume fraction of parameter of alumina nanoparticle $(0.01\leqslant \phi 2\leqslant 0.1)$ Prandtl number $(5.2\leqslant {\rm{\Pr }}\leqslant 8.2),$ Rayleigh number $({10}^{4}\leqslant {\rm{Ra}}\leqslant {10}^{5}),$ volume fraction parameter of single—walled carbon nanotubes $(0.01\leqslant \phi 1\leqslant 0.1)$ and magnetic parameter $\left(0.1\leqslant {\rm{M}}\leqslant 0.7\right)$ have schemed through graphs. Rate of heat transfer augments from 8.2% to 17.6% in the case single—walled carbon nanotubes of volume fraction 0.05 are suspending into the base fluid, whereas, heat transfer rate rises from 8.2% to 12.4% in the case of alumina nanoparticles of volume fraction 0.05 are suspending into the base fluid.



中文翻译:

空腔内基于氧化铝和碳纳米管的混合纳米流体的熵产生和传热分析

本文介绍了混合纳米流体的传热、流动和熵产生特征的数值研究,混合纳米流体由氧化铝、单壁碳纳米管作为纳米颗粒和乙二醇作为基础流体,在方形腔内。通过采用有限差分技术对所得的无量纲方程进行数值评估。等温线、流线和熵产生的散射随$(0.01\leqslant {\rm{R}}\leqslant 0.1),$氧化铝纳米粒子的参数体积分数的不同值而变化单壁碳纳米管的$(0.01\leqslant \phi 2\leqslant 0.1)$普朗特数$(5.2\leqslant {\rm{\Pr }}\leqslant 8.2),$瑞利数$({10}^{4}\leqslant {\rm{Ra}}\leqslant {10}^{5}),$体积分数参数$(0.01\leqslant \phi 1\leqslant 0.1)$和磁参数$\left(0.1\leqslant {\rm{M}}\leqslant 0.7\right)$已经通过图表进行了规划。在体积分数为 0.05 的单壁碳纳米管悬浮在基液中的情况下,传热率从 8.2% 增加到 17.6%,而在体积分数为 0.05 的氧化铝纳米粒子的情况下,传热率从 8.2% 增加到 12.4% 0.05 级分悬浮在基液中。

更新日期:2021-05-24
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