恒定热通量下辐射吸收和化学反应对多孔介质中无MHD对流的影响

IF 1.7 4区工程技术 Q3 THERMODYNAMICS

Heat Transfer Research Pub Date : 2023-08-17 DOI:10.1002/htj.22936

N. Ahmed, Richa Deb Dowerah

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引用次数: 0

摘要

本文研究了一种不可压缩的、导电的粘性流体稳定自由地流过均匀多孔介质，该介质部分受无限长垂直多孔板的约束。此外，还观察到化学反应和辐射吸收效应。在这里，在板的横向上施加均匀强度的磁场，对流体施加正常的吸力速度，并且认为热流密度是恒定的。用摄动法求解了非量纲动量方程和能量方程。这一问题已经得到了解析解决，包括Hartmann数、孔隙度参数、热Grashof数、质量Grashof数以及Sherwood数、表面摩擦和板温等输运性质在内的几个参数都用图形表示了出来。目前的研究表明，辐射吸收效应的峰值会导致皮肤摩擦下降，但另一方面，对板温观察到相反的效果。本研究的一个显著发现是舍伍德数随化学反应参数影响的增加而增加。

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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Effect of radiation absorption and chemical reaction on MHD‐free convective flow through a porous medium past an infinite vertical porous plate in the presence of constant heat flux

An incompressible, electrically conducting, and viscous fluid flowing steadily and freely across a uniformly porous media that is partially constrained by an infinitely long vertical porous plate is studied in the present article. Additionally, chemical reaction and radiation absorption effects are seen. Here, a magnetic field of uniform strength is applied transversely to the plate, a normal suction velocity is imposed on the fluid, and the heat flux is considered to be constant. The non‐dimensional momentum and energy equations are solved using the method of perturbation. The problem has been analytically resolved, and several parameters, including the Hartmann number, porosity parameter, thermal Grashof number, mass Grashof number, and transport properties like the Sherwood number, skin friction, and plate temperature, are graphically represented. The current study reveals a spike in the radiation absorption effect causes skin friction to drop, but on the other hand, a contrary effect is observed for plate temperature. One of the notable findings of this investigation is that the Sherwood number increases as chemical reaction parameter influence increases.

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来源期刊

Heat Transfer Research 工程技术-热力学

CiteScore

3.10

自引率

23.50%

发文量

102

审稿时长

13.2 months

期刊介绍： Heat Transfer Research (ISSN1064-2285) presents archived theoretical, applied, and experimental papers selected globally. Selected papers from technical conference proceedings and academic laboratory reports are also published. Papers are selected and reviewed by a group of expert associate editors, guided by a distinguished advisory board, and represent the best of current work in the field. Heat Transfer Research is published under an exclusive license to Begell House, Inc., in full compliance with the International Copyright Convention. Subjects covered in Heat Transfer Research encompass the entire field of heat transfer and relevant areas of fluid dynamics, including conduction, convection and radiation, phase change phenomena including boiling and solidification, heat exchanger design and testing, heat transfer in nuclear reactors, mass transfer, geothermal heat recovery, multi-scale heat transfer, heat and mass transfer in alternative energy systems, and thermophysical properties of materials.