混合纳米流体拉伸/收缩薄片上随时间的辐射热运动的模拟:对偶溶液的稳定性分析

IF 4.2 Q2 NANOSCIENCE & NANOTECHNOLOGY
S. Tinker, S. Mishra, P. Pattnaik, R. Sharma
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引用次数: 7

摘要

在当前的研究中,研究了具有热辐射和源/汇的时变混合纳米流体在拉伸/收缩片上的传热特性。我们将本研究的控制方程转化为利用相似变量的相似方程。然而,通过内置的MATLAB代码bvp5c获得了数值解。研究了不同热物性参数值的质量和能量分布及其物理量。观察到,对于非定常参数的选择,存在对偶解,即一个是上分支解,另一个是下分支解。同时进行稳定性分析,确定对偶解的长期稳定性,表明两者中只有一个是稳定的,另一个是不稳定的。结果表明,相对而言,第一种解是稳定的,而第二种解是不稳定的。二阶滑移对问题各自的流动和传热特性有相当大的影响。此外,主要结果还表明,随着吸力参数值的增加,无量纲摩擦应力和常规传热的增强幅度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simulation of time-dependent radiative heat motion over a stretching/shrinking sheet of hybrid Nanofluid: Stability analysis for dual solutions
The heat transfer characteristics for the flow of a time-dependent hybrid nanofluid with thermal radiation and source/sink over a stretching/shrinking sheet are examined in the current investigation. We have transformed the governing equations of the presented study into the similarity equations utilizing similarity variables. However, a numerical solution is obtained by using in-build MATLAB code bvp5c. The mass and energy profiles for diverse values of thermophysical parameters are studied together with their physical quantities. It is observed that dual solutions exist, that is, one is upper, and the other is lower branch solution for a definite choice of the unsteadiness parameter. Also, stability analysis is executed to determine the long-term stability of dual solutions, indicating that out of the two, only one is stable and the other is unstable. It is revealed that comparatively, the first solution shows stability, while the second solution shows instability. There is a considerable influence of second-order slip on the problem’s respective flow and heat transfer characteristics. Further, major outcomes also show the dimensionless frictional stress and the magnitude of conventional heat transfer enhancement with growing suction parameter values.
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来源期刊
CiteScore
6.00
自引率
1.70%
发文量
24
期刊介绍: Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems is a peer-reviewed scientific journal published since 2004 by SAGE Publications on behalf of the Institution of Mechanical Engineers. The journal focuses on research in the field of nanoengineering, nanoscience and nanotechnology and aims to publish high quality academic papers in this field. In addition, the journal is indexed in several reputable academic databases and abstracting services, including Scopus, Compendex, and CSA's Advanced Polymers Abstracts, Composites Industry Abstracts, and Earthquake Engineering Abstracts.
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