Cattaneo-Christov heat flux effect on Sakiadis MHD boundary layer transport phenomena in the Jeffrey fluid

IF 1.1 4区工程技术 Q4 THERMODYNAMICS

Thermal Science Pub Date : 2023-01-01 DOI:10.2298/tsci221013214o

Zarith Othman, Zailan Siri, Muhamad Aziz, Kohilavani Naganthran

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引用次数: 0

Abstract

This study aims to perform a numerical simulation of the boundary flow with the characteristic Sakiadis flow of the magnetohydrodynamic (MHD) Jeffrey fluid under the Cattaneo-Christov heat flux model over the horizontal plate. The similarity transformation for the local similarity solution was used to reduce the set of governing equations to non-linear ordinary differential equations. The equations were solved by using ?dsolve? command with the numeric option for the boundary value problem in Maple. Simulations have been carried out for different values of the relaxation to retardation times, the Deborah number, the magnetic field parameter, the heat flux relaxation time, the Prandtl number, and the Schmidt parameter. A comparative study of the numerical results from the previously published paper with the present result for the dimensionless velocity gradient over the horizontal plate shows excellent agreement. It has been found that the growth of the Deborah number leads to the dimensionless velocity gradient enhancement, while the increment of the relaxation to retardation times parameter and the magnetic field parameter indicates the opposite trend. The heat transfer rate noticeably decreased with an increment in the Prandtl number and thermal relaxation time at the fluid regime. Also, fluid concentration decreases with larger values of the Schmidt parameter.

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Cattaneo-Christov热通量对Jeffrey流体中sakadiis MHD边界层输运现象的影响

在Cattaneo-Christov热通量模型下，对具有Sakiadis特征的磁流体杰弗里流体在水平板上的边界流动进行了数值模拟。利用局部相似解的相似变换将控制方程组简化为非线性常微分方程。用?dsolve?求解方程。命令，该命令带有用于Maple中的边界值问题的数字选项。对不同的弛豫时间、德博拉数、磁场参数、热流弛豫时间、普朗特数和施密特参数进行了模拟。将先前发表的论文的数值结果与本文对水平板上无量纲速度梯度的计算结果进行了比较，结果表明两者非常吻合。结果表明，狄波拉数的增加导致无量纲速度梯度的增强，而弛豫到延迟时间参数和磁场参数的增加则表明相反的趋势。传热速率随普朗特数的增加和流体状态下热松弛时间的增加而显著降低。Schmidt参数越大，流体浓度越低。

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

Thermal Science 工程技术-热力学

CiteScore

2.70

自引率

29.40%

发文量

399

审稿时长

5 months

期刊介绍： The main aims of Thermal Science to publish papers giving results of the fundamental and applied research in different, but closely connected fields: fluid mechanics (mainly turbulent flows), heat transfer, mass transfer, combustion and chemical processes in single, and specifically in multi-phase and multi-component flows in high-temperature chemically reacting flows processes present in thermal engineering, energy generating or consuming equipment, process and chemical engineering equipment and devices, ecological engineering, The important characteristic of the journal is the orientation to the fundamental results of the investigations of different physical and chemical processes, always jointly present in real conditions, and their mutual influence. To publish papers written by experts from different fields: mechanical engineering, chemical engineering, fluid dynamics, thermodynamics and related fields. To inform international scientific community about the recent, and most prominent fundamental results achieved in the South-East European region, and particularly in Serbia, and - vice versa - to inform the scientific community from South-East European Region about recent fundamental and applied scientific achievements in developed countries, serving as a basis for technology development. To achieve international standards of the published papers, by the engagement of experts from different countries in the International Advisory board.