非定常电磁辐射纳米流体在具有化学反应纳米颗粒的拉伸片上的滞点流动、Stefan吹气效应和熵生成

P. Rana, N. Shukla, O. Bég, A. Kadir, Bani Singh
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引用次数: 28

摘要

本文研究了非线性辐射、Stefan吹气和化学反应对水平拉伸片纳米流体非定常电磁流体滞点流动的综合影响。考虑了电体力和磁体力。此外,在边界处考虑了速度滑移、热滑移和质量滑移的影响。采用同伦分析方法求解由控制方程相似变换得到的非线性偏微分方程组的无量纲系统。以图形的形式给出了风机参数、电参数、磁参数等新兴参数对重要物理量的影响。此外,本文还对热优化进行了熵产分析。观察到,随着磁场和电场的增大,流动速度加快。熵产数随磁场、电场和雷诺数的增大而增大,随化学反应参数的增大而减小。
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Unsteady electromagnetic radiative nanofluid stagnation-point flow from a stretching sheet with chemically reactive nanoparticles, Stefan blowing effect and entropy generation
This article investigates the combined influence of nonlinear radiation, Stefan blowing and chemical reactions on unsteady electro-magneto-hydrodynamic stagnation-point flow of a nanofluid from a horizontal stretching sheet. Both electrical and magnetic body forces are considered. In addition, the effects of velocity slip, thermal slip and mass slip are considered at the boundaries. An analytical method named as homotopy analysis method is applied to solve the non-dimensional system of nonlinear partial differential equations which are obtained by applying similarity transformations on governing equations. The effects of emerging parameters such as Stefan blowing parameter, electric parameter and magnetic parameter on the important physical quantities are presented graphically. In addition, an entropy generation analysis is provided in this article for thermal optimization. The flow is observed to be accelerated both with increasing magnetic field and electrical field. Entropy generation number is markedly enhanced with greater magnetic field, electrical field and Reynolds number, whereas it is reduced with increasing chemical reaction parameter.
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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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