Ag-Al[式:见正文]O[式:见正文]/水混合磁对流纳米流的强化传热分析。

0 MATERIALS SCIENCE, MULTIDISCIPLINARY
M Ragavi, T Poornima
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引用次数: 0

摘要

本研究的主要目标是研究由银(Ag)和氧化铝(Al[式:见正文]O[式:见正文]纳米粒子组成的混合纳米流体在嵌入多孔介质的非稳定径向拉伸片上的热量和流动特性。研究是在焦耳热、粘性耗散、多孔、滑移和吸力等几个关键参数的影响下进行的。研究采用相似变换技术将 PDE 治理系统转换为非线性 ODE,并使用 bvp4c 求解器对其进行数值求解。本研究探讨了球形和板状纳米粒子对温度和速度曲线的影响。研究结果将通过图表进行讨论。多孔、滑移和吸力参数的增加使速度曲线逐渐减小。当比奥特数、磁参数和埃克特数增加时,温度会升高。与球形纳米粒子相比,板状纳米粒子的传热性和流动性最强。结果表明,使用体积分数为 5%的 Ag-Al[式:见正文]O[式:见正文]/H[式:见正文]O 混合纳米流体,与球形纳米粒子相比,板状纳米粒子的传热增强了 11.88%。总之,板状纳米粒子在各种工程应用中具有独特的优势,这主要归功于它们的大表面积、各向异性和可调表面化学性质。这些特性使它们成为改善工程领域材料和系统性能的多功能工具。这些发现有助于设计和优化各种工程应用中基于纳米流体的系统,如热交换器、微流体和能量转换装置。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Enhanced heat transfer analysis on Ag-Al[Formula: see text]O[Formula: see text]/water hybrid magneto-convective nanoflow.

Enhanced heat transfer analysis on Ag-Al[Formula: see text]O[Formula: see text]/water hybrid magneto-convective nanoflow.

The primary goal of this investigation is to examine the heat and flow characteristics of a hybrid nanofluid consisting of silver (Ag) and aluminum oxide (Al[Formula: see text]O[Formula: see text] nanoparticles over an unsteady radially stretching sheet embedded in porous medium. The investigation is conducted under the influence of several key parameters, namely joule heating, viscous dissipation, porous, slip, and suction. The technique of similarity transformations is used to transform the governing system of PDEs into nonlinear ODEs and the bvp4c solver is used to solve them numerically. The present study examines the influence of sphere and platelet shape nanoparticles on the temperature and velocity profiles. The outcomes are discussed through graphs and tables. A rise in the porous, slip, and suction parameters makes the velocity profile decrease gradually. The temperature escalates when Biot number, magnetic parameter, and Eckert number increase. As compared to sphere shapes, platelet-shaped nanoparticles exhibit the greatest heat transfer and flow. Results reveal that by using Ag-Al[Formula: see text]O[Formula: see text]/H[Formula: see text]O hybrid nanofluid with a volume fraction of 5%, the heat transfer enhancement of platelet shape nanoparticles increased by 11.88% than sphere-shaped nanoparticles. Overall, the platelet shape of nanoparticles offers distinctive advantages in various engineering applications, primarily due to their large surface area, anisotropic properties, and tunable surface chemistry. These properties make them versatile tools for improving the performance of materials and systems in engineering fields. The findings can contribute to the design and optimization of nanofluid-based systems in various engineering applications, such as heat exchangers, microfluidics, and energy conversion devices.

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CiteScore
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