带翅片环空内部的磁流体力学自然对流

IF 1.1 4区工程技术 Q4 ENGINEERING, MECHANICAL

Journal of Thermophysics and Heat Transfer Pub Date : 2023-01-16 DOI:10.2514/1.t6696

Ahad Abedini Esfahlani, H. Kargarsharifabad

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引用次数: 0

摘要

本文对带翅片环空内的自然对流磁流体力学进行了数值研究。研究了翅片角度、翅片长度、哈特曼数等参数对流动和换热特性的影响。控制方程采用有限体积技术在固定的瑞利数([公式:见文])下离散，而哈特曼数在0-100范围内。结果表明，在一定的翅片长度([公式:见文])下，增加翅片的角度([公式:见文])，除了[公式:见文]会产生一些小涡外，传热都有所减少。此外，通过增加Hartmann数来减小Nusselt数。在哈特曼数从0到100的所有范围内，当[公式:见文]时，努塞尔数的变化最大。

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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Magnetohydrodynamics Natural Convection Inside an Annulus Equipped with Fins

In this paper, magnetohydrodynamics natural convection inside an annulus equipped with fins is studied numerically. The impact of various parameters such as the angle of the fin, length of the fin, and the Hartmann number on the flow and heat transfer characteristics are studied. The governing equations are discretized using a finite volume technique at a fixed value of the Rayleigh number ([Formula: see text]), while the Hartmann number is in the range of 0–100. The results show that increasing the angle of the fin ([Formula: see text]) for a specific value of the fin length ([Formula: see text]) results in decreasing the heat transfer except [Formula: see text] due to some created small vortices. Moreover, the Nusselt number is reduced by increasing the Hartmann number. For all ranges of the Hartmann number from 0 to 100, the change in the Nusselt number is at maximum when [Formula: see text].

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来源期刊

Journal of Thermophysics and Heat Transfer 工程技术-工程：机械

CiteScore

3.50

自引率

19.00%

发文量

审稿时长

3 months

期刊介绍： This Journal is devoted to the advancement of the science and technology of thermophysics and heat transfer through the dissemination of original research papers disclosing new technical knowledge and exploratory developments and applications based on new knowledge. The Journal publishes qualified papers that deal with the properties and mechanisms involved in thermal energy transfer and storage in gases, liquids, and solids or combinations thereof. These studies include aerothermodynamics; conductive, convective, radiative, and multiphase modes of heat transfer; micro- and nano-scale heat transfer; nonintrusive diagnostics; numerical and experimental techniques; plasma excitation and flow interactions; thermal systems; and thermophysical properties. Papers that review recent research developments in any of the prior topics are also solicited.