无限垂直多孔板上非稳态 MHD 对流的 Soret 和 Dofour 效应

IF 1.8 4区 物理与天体物理 Q3 PHYSICS, APPLIED
M. Gayathri, B. H. Babu, M. Krishna
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引用次数: 0

摘要

本文对不可压缩粘性流体与化学反应的非稳态 MHD 对流中的发热、Soret 和 Dufour 的影响进行了计算研究。这是由于指数加速的垂直多孔板嵌入渗透介质中,壁面温度随表面浓度和热辐射影响而变化。通过插入适当的非一维参数和变量,流体动力学的基本流动控制方程组被转换为非一维形式。此外,还采用高效的 Crank-Nicolsons 隐式有限差分法对结果方程进行计算求解。在图形剖面和表格形式的帮助下,探讨了模型中几个必要的实质性参数对流体的速度、温度和浓度,以及热情况下的表皮摩擦系数、努塞尔特数和舍伍德数的影响。研究发现,随着杜富尔参数、温度生成参数和热辐射参数数量的增加,流体温度和速度也随之增加。同样,索雷特参数的增加会导致流体速度和浓度的增加,而化学反应参数则会导致输出的逆转。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Soret and Dofour effects on unsteady MHD convection flow over an infinite vertical porous plate
In this paper, the computational examination is carried out on the heat generation, Soret and Dufour’s influence on the unsteady MHD convection flow of an incompressible viscous fluid with chemical reaction. It is due to the exponentially accelerated vertical porous plate embedded in a permeable medium with ramped wall temperature together with surface concentration and also with thermal radiation impacts. The basic governing set of the equations of the fluid dynamics to the flow is converted into nondimensional form by inserting suitable nondimensional parameters and variables. In addition, the resultant equations are solved computationally with the efficient Crank–Nicolsons implicit finite difference methodology. The influences for several imperative substantial parameters for the model on the velocity, temperature and concentration for the fluids, the skin friction coefficient, Nusselt and Sherwood number for together thermal situations have been explored with the help of graphical profiles and tabular forms. It is found that, the increasing quantities of the Dufour, temperature generation and thermal radiation parameters, the fluid temperature as well as velocity enhances. Similarly, it is noted that an escalating Soret parameter causes the fluid’s velocity and concentration whereas the chemical reaction parameter notifies reversal outputs.
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来源期刊
Modern Physics Letters B
Modern Physics Letters B 物理-物理:凝聚态物理
CiteScore
3.70
自引率
10.50%
发文量
235
审稿时长
5.9 months
期刊介绍: MPLB opens a channel for the fast circulation of important and useful research findings in Condensed Matter Physics, Statistical Physics, as well as Atomic, Molecular and Optical Physics. A strong emphasis is placed on topics of current interest, such as cold atoms and molecules, new topological materials and phases, and novel low-dimensional materials. The journal also contains a Brief Reviews section with the purpose of publishing short reports on the latest experimental findings and urgent new theoretical developments.
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