关于纳米碳管纳米流体在拉伸表面上的达西-福克海默(Darcy-Forchheimer)流动对热源/散热器和欧姆加热的影响

IF 1.8 4区 物理与天体物理 Q3 PHYSICS, APPLIED
R. S. Tripathy, P. K. Ratha, S. R. Mishra
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引用次数: 0

摘要

这项研究旨在提高碳纳米管(CNTs)的生产率和效率,碳纳米管在太阳能集热器中有着广泛的应用。由于碳纳米管具有优异的热性能和电性能,它的使用对纳米技术革命具有重要贡献。因此,基于上述重要观点,本研究旨在提出经过拉伸表面的单壁和多壁 CNT 纳米流体的热物理性质。此外,由于包含耗散(欧姆加热)和外部热源/散热器,导电纳米流体的流动现象更加丰富。利用相似变换将三维流体流动现象的维度形式转换为非维度形式,并采用进一步的数值程序求解非线性控制方程。本研究通过图表简要介绍了特征参数的重要意义,并通过表格进行了与早期研究的对比分析。不过,本研究的主要发现如下:在惯性阻力增强的情况下,剪切速率会明显减弱,但在磁化值增强的情况下,剪切速率会有所提高;此外,两种 CNT 的颗粒浓度都有利于加速流体动量和温度分布。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
On the Darcy–Forchheimer flow of carbon nanotubes nanofluid across a stretching surface for the impact of heat source/sink and Ohmic heating

This research leads to carrying out the productivity and the efficiency of the carbon nanotubes (CNTs) that have extensive applications in solar collectors. Due to the superior thermal as well as electrical properties, the use of CNTs has an important contribution to the nanotechnology revolution. Therefore, owing to the aforementioned vital points, this investigation intended to put forth the thermophysical properties of both single and multi-walled CNT nanofluids past a stretching surface. Additionally, an electrically conducting nanofluid flow phenomenon enriches due to the inclusion of dissipation (Ohmic heating) and external heat source/sink. The dimensional form of the three-dimensional fluid flow phenomena is transformed to a non-dimensional form with the use of similarity transformation and further numerical procedure is implemented to solve the nonlinear governing equations. The substantial significance of the characterizing parameters is presented briefly via figures and the comparative analysis with the earlier investigation is deployed through the table. However, the main findings of this study are as follows: A significant attenuation in the shear rate is marked for the enhanced inertial drag but it augments for the augmented values of the magnetization; further, particle concentrations of both the CNTs favor accelerating the fluid momentum as well as temperature distribution.

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来源期刊
Modern Physics Letters B
Modern Physics Letters B 物理-物理:凝聚态物理
CiteScore
3.70
自引率
10.50%
发文量
235
审稿时长
5.9 months
期刊介绍: MPLB opens a channel for the fast circulation of important and useful research findings in Condensed Matter Physics, Statistical Physics, as well as Atomic, Molecular and Optical Physics. A strong emphasis is placed on topics of current interest, such as cold atoms and molecules, new topological materials and phases, and novel low-dimensional materials. The journal also contains a Brief Reviews section with the purpose of publishing short reports on the latest experimental findings and urgent new theoretical developments.
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