Thermal characteristics of hybrid Nanofluid (Cu-Al2O3) flow through Darcy porous medium with chemical effects via numerical successive over relaxation technique

IF 6.4 2区 工程技术 Q1 THERMODYNAMICS
Assmaa Abd-Elmonem , Qammar Rubbab , Hakim AL. Garalleh , Fazeelat Rehman , Muhammad Amjad , Fayza Abdel Aziz ElSeabee , Nesreen Sirelkhtam Elmki Abdalla , Wasim Jamshed , Syed M. Hussain , Hijaz Ahmad
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引用次数: 0

Abstract

The flow of fluids through porous media is commonly described using the Darcy model, therefore investigating hybrid nanofluids in this setting is rather new. The present work offers insightful information on how the hybrid nanofluids behave and function in porous medium. The study's conclusions may have an impact on a lot of different engineering applications like filtration systems, chemical reactors, and environmental engineering. The study concentrates on a hybrid nanofluid which consists of Cu and Al₂O₃ nanoparticles. The metallic nanoparticles such as copper have high thermal conductivity and non-metallic nanoparticles such as aluminum oxide are chemically stable and has high thermal resistance. This is the reason that the combination Cu-Al₂O₃ is believed to give better heat transfer composite than using individual nanofluids. By employing proper similarity transformation, the governing PDEs are turned into ODEs. To discretize these ODEs, the central finite difference method is used first. Then the successive over relaxation technique is utilized to numerically solve the nonlinear equations. The findings are summarized in a graphical and tabular format. The impacts of several controlling parameters such as porosity, suction, Schmidt number and volume fraction on flow pattern, thermal properties, and concentration are investigated and discussed. The streamwise and normal velocity profiles fall and those of concentration and temperature rise with increase in the values of the porosity parameter.
利用数值逐次过松弛技术研究Cu-Al2O3混合纳米流体在具有化学效应的Darcy多孔介质中的热特性
流体在多孔介质中的流动通常用Darcy模型来描述,因此在这种情况下研究混合纳米流体是相当新的。本研究对混合纳米流体在多孔介质中的行为和功能提供了有见地的信息。这项研究的结论可能会对许多不同的工程应用产生影响,比如过滤系统、化学反应器和环境工程。该研究集中在由Cu和Al₂O₃纳米粒子组成的混合纳米流体上。金属纳米粒子如铜具有高导热性,非金属纳米粒子如氧化铝具有化学稳定性和高热阻。因此,与单独使用纳米流体相比,Cu-Al₂O₃的复合传热效果更好。通过适当的相似变换,将控制偏微分方程转化为偏微分方程。首先采用中心有限差分法对其离散化。然后利用逐次过松弛技术对非线性方程进行数值求解。调查结果以图表形式总结。研究和讨论了孔隙度、吸力、施密特数和体积分数等控制参数对流体流态、热性能和浓度的影响。随着孔隙度参数的增大,沿流速度和法向速度曲线下降,浓度和温度曲线上升。
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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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