Influence of space conjugate temperature varying non-uniform heat sink/source on hydromagnetic slip water-EG (50:50) nanofluid

IF 6.4 2区 工程技术 Q1 THERMODYNAMICS Case Studies in Thermal Engineering Pub Date : 2024-10-01 DOI:10.1016/j.csite.2024.105220
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Abstract

Significant cooling is an essential requirement in the field of aeronautical and bio-medical engineering, nuclear reactor system, solar collectors, and in development of electronic chips etc. Involving rotating conical geometries. In view of this, flow and heat transfer over conical geometries subject to different constraints of motion are highly needed. Implementation of magnetic field subject to flow pattern controls the fluid motion thereby imparting better cooling. Consideration of nanofluid instead of regular fluid yields prominent cooling of the associated surface. Such relevance has motivated the authors to work on magnetohydrodynamics and heat transfer investigation of water-EG (50:50) mixture based Al2O3 and Fe3O4 past heated and rotating down-pointing upright cone subject to impact of space and temperature varying non-uniform heat source or sink. Numerical solution of dimensionless governing equations is accomplished by implementing Runge-Kutta method. The findings indicate that swirl and axial velocities peter out with rise in magnetic parameter while both exhibit opposite impact in response to slip parameter. Temperature profiles upgrade due to amplification of space and temperature dependent parameters. Skin friction and heat transportation upsurge with growth of solid volume fraction of nanoparticle.
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空间共轭温度变化的非均匀散热器/热源对水磁滑移水-EG(50:50)纳米流体的影响
在航空和生物医学工程、核反应堆系统、太阳能集热器以及电子芯片开发等领域,大量冷却是一项基本要求。这涉及到旋转的锥形几何体。有鉴于此,亟需研究受不同运动限制的锥形几何体上的流动和传热问题。根据流动模式实施磁场控制流体运动,从而提供更好的冷却效果。考虑用纳米流体代替普通流体,可以显著冷却相关表面。这种相关性促使作者着手研究基于 Al2O3 和 Fe3O4 的水-EG(50:50)混合物的磁流体力学和传热学,该混合物经过受空间和温度变化影响的非均匀热源或散热器加热和旋转的向下直立锥体。采用 Runge-Kutta 方法对无量纲控制方程进行了数值求解。研究结果表明,漩涡速度和轴向速度随着磁性参数的增加而减弱,而两者对滑移参数的影响则相反。由于空间和温度相关参数的放大作用,温度曲线上升。随着纳米粒子固体体积分数的增加,表面摩擦和热传导也随之增加。
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来源期刊
Case Studies in Thermal Engineering
Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes
CiteScore
8.60
自引率
11.80%
发文量
812
审稿时长
76 days
期刊介绍: Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.
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