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通过熵产生研究具有活化能和化学反应的辐射磁流体动力学卡森纳米流体在过去非线性拉伸表面上的流动

Radiative MHD Casson Nanofluid Flow with Activation energy and chemical reaction over past nonlinearly stretching surface through Entropy generation.

作者信息

Shah Zahir, Kumam Poom, Deebani Wejdan

机构信息

Center of Excellence in Theoretical and Computational Science (TaCS-CoE), SCL 802 Fixed Point Laboratory, Science Laboratory Building, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha-Uthit Road, Bang Mod, Thrung Khru, Bangkok, 10140, Thailand.

KMUTT Fixed Point Research Laboratory, Room SCL 802 Fixed Point Laboratory, Science Laboratory Building, Department of Mathematics, Faculty of Science, King Mongkut's University of Technology Thonburi (KMUTT), 126 Pracha-Uthit Road, Bang Mod, Thrung Khru, Bangkok, 10140, Thailand.

出版信息

Sci Rep. 2020 Mar 10;10(1):4402. doi: 10.1038/s41598-020-61125-9.

DOI:10.1038/s41598-020-61125-9
PMID:32157108
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7064606/
Abstract

In the present research analysis we have addressed comparative investigation of radiative electrically conducting Casson nanofluid. Nanofluid Flow is assumed over a nonlinearly stretching sheet. Heat transport analysis is carried via joule dissipation, thermal behavior and convective boundary condition. To employ the radiative effect radiation was involved to show the diverse states of nanoparticles. Furthermore entropy optimization with activation energy and chemical reaction are considered. Thermodynamics 2 law is applied to explore entropy generation rate. Nonlinear expression is simplified through similarity variables. The reduced ordinary system is tackled through optimal approach. Flow pattern was reported for wide range of scrutinized parameters. Computational consequences of velocity drag force, heat flux and concentration gradient are analyzed numerically in tables. Results verify that conduction mode augments with enhance of magnetic parameter.Increasing radiation boosts the temperature and entropy. Activation energy corresponds to augmented concentration. Heat transmission rate augments with the consideration of radiation source term.

摘要

在本研究分析中，我们对辐射导电卡森纳米流体进行了对比研究。假设纳米流体在非线性拉伸片上流动。通过焦耳耗散、热行为和对流边界条件进行热传输分析。为考虑辐射效应，引入辐射以展示纳米颗粒的不同状态。此外，还考虑了具有活化能和化学反应的熵优化。应用热力学第二定律来探究熵产生率。通过相似变量简化非线性表达式。通过最优方法求解简化后的常微分方程组。针对广泛的研究参数报告了流动模式。在表格中对速度阻力、热通量和浓度梯度的计算结果进行了数值分析。结果验证了传导模式随磁参数的增加而增强。辐射增加会提高温度和熵。活化能对应浓度增加。考虑辐射源项时热传输速率增加。

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