热分层和化学反应对多孔介质中温度可变和指数质量扩散的加速垂直板自由对流的影响

IF 2.8 Q2 THERMODYNAMICS
Heat Transfer Pub Date : 2024-06-14 DOI:10.1002/htj.23106
Digbash Sahu, Rudra Kanta Deka
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引用次数: 0

摘要

本研究探讨了在多孔介质中,热分层和化学反应对磁流体力学(MHD)自由对流的影响。利用拉普拉斯变换技术获得的分析解准确地表达了流动的物理机制。研究采用了先进的数学模型,分析了在不同热量和指数质量扩散条件下 MHD 和对流过程之间错综复杂的相互作用,提供了对流体动力学的深入见解,密切模拟了现实世界的条件。该研究通过对比热分层与非分层环境的影响得出了一个重要结论。人们注意到,当对流动进行分层时,会更快地达到稳定状态。研究显示,热分层降低了流体速度和温度,但增加了表皮摩擦力和努塞尔特数,与非分层条件不同。研究还表明,在流体动力学中,、 和 等参数对速度、温度和浓度有显著影响。这项研究可能是出于加强对各种工程和环境中流体流动的理解的需要,在这些环境中,包括地热能源提取、热管理、化学加工工业和环境控制技术等,此类条件十分普遍。这种新颖的方法可加深对自然和工程多孔环境中流动过程的理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influences of thermal stratification and chemical reaction on MHD free convective flow along an accelerated vertical plate with variable temperature and exponential mass diffusion in a porous medium

This study examines the impacts of thermal stratification and chemical reaction on magnetohydrodynamic (MHD) free convective flow along an accelerated vertical plate with variable temperature and exponential mass diffusion, set within a porous medium. Analytical solutions, utilized, are obtained through the Laplace transform technique to accurately represent the flow's physical mechanism. The research employs advanced mathematical models to analyze the intricate interplay between MHD and convective processes under varying thermal and exponential mass diffusion conditions, offering insights into fluid dynamics that closely simulate real-world conditions. The study draws a significant conclusion by contrasting the effects of thermal stratification with a nonstratified environment. It has been noted that when stratification is applied to the flow, the steady state is achieved more quickly. The study reveals that thermal stratification reduces fluid velocity and temperature but increases skin friction and the Nusselt number, diverging from nonstratified conditions. It also shows that parameters, like, G r , G c , S c , M , D a $Gr,Gc,Sc,M,Da$ , and K c ${K}_{c}$ significantly influence velocity, temperature, and concentration in fluid dynamics. This research could be driven by a need to enhance the understanding of fluid flow in various engineering and environmental contexts, where such conditions are prevalent, including geothermal energy extraction, thermal management, chemical processing industries, and environmental control technologies. This novel approach enhances understanding of flow processes in both natural and engineered porous environments.

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来源期刊
Heat Transfer
Heat Transfer THERMODYNAMICS-
CiteScore
6.30
自引率
19.40%
发文量
342
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