IF 4.3 3区 工程技术 Q2 ENERGY & FUELS
Mujeeb ur Rahman, Fazal Haq, Hassan Ali Ghazwani, Jihad Younis, Mofareh Hassan Ghazwani, Ali Alnujaie, Mohammed Y. Tharwan
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引用次数: 0

摘要

熵产生(EG)与热力学系统中存在的不可逆现象有着内在联系,意味着能量损失,主要是在流体摩擦和热传递方面。在以纳米流体流动为特征的系统中,如冷却应用、微电子学和热交换器中使用的系统,减少 EG 对通过减轻这些损失来提高能效至关重要。本文分析了多孔拉伸片上的萨特比纳米液体混合对流以及不可逆现象。通过混合对流和磁场影响,报告了动量方程。在建立热传输关系时,考虑了耗散、洛伦兹力和辐射的影响。通过化学反应效应描述了浓度表达式。热力学第二定律用于描述熵。表示流动现象的偏微分方程(PDEs)通过变换变为自相似形式。利用 Mathematica 软件包的 NDSolve 功能求解自相似系统。图解分析了各种变量对浓度、速度、贝扬量、不可逆性和热场的影响。对工程量进行了数值讨论。结果表明,热浮力参数越高,速度曲线越大,而磁变量越大,速度曲线越小。埃克特数越高,温度越高;普朗特数越高,温度越低。扩散和辐射变量值越大,熵越大。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Physical Aspects of Entropy Generation in Magnetized Mixed Convection Sutterby Nanoliquid Flow With Chemical Reaction

Physical Aspects of Entropy Generation in Magnetized Mixed Convection Sutterby Nanoliquid Flow With Chemical Reaction

Entropy generation (EG) is intrinsically linked with irreversibilities present within a thermodynamical system, signifying energy losses, mainly in the context of fluid friction and heat transfer. In systems characterized by nanofluid flow, such as those utilized in cooling applications, microelectronics, and heat exchangers, the reduction of EG is essential for augmenting energy efficiency by alleviating these losses. In this communication, mixed convection flow of Sutterby nanoliquid by a porous stretched sheet along with irreversibility is analyzed. The momentum equation is reported by taking mixed convection and magnetic field impacts. Dissipation, Lorentz force, and radiation influences are taken in the development of heat transport relation. The expression for concentration is described by taking the chemical reaction effect. Thermodynamics second law is employed to describe entropy. The partial differential equations (PDEs) indicating the flow phenomenon are altered into self-similar form via transformations. The NDSolve function of Mathematica package is availed to solve the self-similar system. The impact of sundry variables on concentration, velocity, Bejan quantity, irreversibility, and thermal field is analyzed graphically. Engineering quantities are discussed numerically. The results reveal that the velocity profile upsurges for higher thermal buoyancy parameter, while it decays for raising magnetic variable. For raising values of Eckert number temperature upsurges, while it decays for an upturn in Prandtl number. Entropy is more for superior values of diffusion and radiation variables.

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来源期刊
International Journal of Energy Research
International Journal of Energy Research 工程技术-核科学技术
CiteScore
9.80
自引率
8.70%
发文量
1170
审稿时长
3.1 months
期刊介绍: The International Journal of Energy Research (IJER) is dedicated to providing a multidisciplinary, unique platform for researchers, scientists, engineers, technology developers, planners, and policy makers to present their research results and findings in a compelling manner on novel energy systems and applications. IJER covers the entire spectrum of energy from production to conversion, conservation, management, systems, technologies, etc. We encourage papers submissions aiming at better efficiency, cost improvements, more effective resource use, improved design and analysis, reduced environmental impact, and hence leading to better sustainability. IJER is concerned with the development and exploitation of both advanced traditional and new energy sources, systems, technologies and applications. Interdisciplinary subjects in the area of novel energy systems and applications are also encouraged. High-quality research papers are solicited in, but are not limited to, the following areas with innovative and novel contents: -Biofuels and alternatives -Carbon capturing and storage technologies -Clean coal technologies -Energy conversion, conservation and management -Energy storage -Energy systems -Hybrid/combined/integrated energy systems for multi-generation -Hydrogen energy and fuel cells -Hydrogen production technologies -Micro- and nano-energy systems and technologies -Nuclear energy -Renewable energies (e.g. geothermal, solar, wind, hydro, tidal, wave, biomass) -Smart energy system
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