Soret and Dufour Effects on Chemically Reacting and Viscous Dissipating Nanofluid Flowing Past a Moving Porous Plate in the Presence of a Heat Source/Sink

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-04-25 DOI:10.2478/ama-2023-0030

Aastha Aastha, K. Chand

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Abstract

Abstract This study performed a numerical investigation of the Soret and Dufour effects on unsteady free convective chemically reacting nanofluid flowing past a vertically moving porous plate in the presence of viscous dissipation and a heat source/sink. The equations directing the flow are non-dimensionalised, modified to ordinary differential equations and emerging equations are resolved computationally by using the bvp4c function in MATLAB software. The results obtained from this analysis indicate that the resulting velocity of the nanofluid increases with increasing Grashof number, mass Grashof number and porosity parameter. An increase in the Dufour number increases the fluid temperature, whereas the concentration profile declines with the increase in the Schmidt number. It is also observed that the skin friction coefficient, Nusselt number and Sherwood number increase with increasing magnetic field parameter, Eckert number and Schmidt number, respectively. The present study reveals the impact of Soret and Dufour effects on heat and mass transfer rates in chemically reacting and viscous dissipating nanofluids.

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Soret和Dufour效应对纳米流体经过移动多孔板时的化学反应和粘性耗散的影响

摘要本文研究了纳米流体在具有粘性耗散和热源/汇的情况下通过垂直运动多孔板时的非定常自由对流化学反应的Soret和Dufour效应。将导流方程无量纲化，修正为常微分方程，利用MATLAB软件中的bvp4c函数对新兴方程进行计算求解。结果表明，纳米流体的流动速度随粒径、质量和孔隙度参数的增大而增大。杜福尔数的增加使流体温度升高，而浓度分布随着施密特数的增加而下降。表面摩擦系数、Nusselt数和Sherwood数分别随着磁场参数、Eckert数和Schmidt数的增大而增大。本研究揭示了Soret和Dufour效应对化学反应和粘性耗散纳米流体传热传质速率的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.