Chemical reaction and radiation impact on unsteady free convective flow through a porous medium past an infinite oscillatory vertical plate

IF 2.3 4区 工程技术 Q1 MATHEMATICS, APPLIED
D. J. Saikia, N. Ahmed
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引用次数: 0

Abstract

The current investigation is concerned with the effect of chemical reactions and radiation on unsteady free convective flow through a porous medium via an infinitely oscillating vertical plate. The primary goal of this study is to investigate the effects of first‐order homogeneous chemical reactions and thermal radiation on mass flow and heat transmission characteristics. The closed‐form Laplace transformation method is used to obtain exact solutions to the governing equations for concentration, energy and momentum. The impact of various non‐dimensional parameters on fluid velocity, temperature and concentration is graphically depicted. Furthermore, 3‐dimensional surface plots for the Nusselt number and Sherwood number are provided, and the equation for skin friction is derived and demonstrated in tabular form. Investigation simulates that the skin friction increases as the chemical reaction parameter hikes, whereas the fluid concentration reduces as the chemical reaction parameter increases. Further, it was revealed that the augmentation of the radiation parameter decreased the temperature and velocity pattern. It is seen that the primary and secondary velocities reduce due to the increment of the chemical reaction parameter.
通过无限振荡垂直板的多孔介质的非定常自由对流的化学反应和辐射影响
目前研究的是化学反应和辐射对多孔介质中无限振荡垂直板的非定常自由对流的影响。本研究的主要目的是研究一阶均相化学反应和热辐射对质量流和传热特性的影响。封闭形式的拉普拉斯变换方法用于得到浓度、能量和动量控制方程的精确解。各种非量纲参数对流体速度、温度和浓度的影响用图形表示。此外,还提供了努塞尔数和舍伍德数的三维曲面图,并推导了表面摩擦方程,并用表格形式进行了演示。模拟实验表明,随着化学反应参数的增大,表面摩擦力增大,而流体浓度随着化学反应参数的增大而减小。此外,辐射参数的增大会降低温度和速度分布。可以看出,随着化学反应参数的增加,初级和次级速度都有所降低。
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来源期刊
CiteScore
3.30
自引率
8.70%
发文量
199
审稿时长
3.0 months
期刊介绍: ZAMM is one of the oldest journals in the field of applied mathematics and mechanics and is read by scientists all over the world. The aim and scope of ZAMM is the publication of new results and review articles and information on applied mathematics (mainly numerical mathematics and various applications of analysis, in particular numerical aspects of differential and integral equations), on the entire field of theoretical and applied mechanics (solid mechanics, fluid mechanics, thermodynamics). ZAMM is also open to essential contributions on mathematics in industrial applications.
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