由于热浮力,辐射和耗散热量对平行通道内Williamson纳米流体流动的影响

IF 4.2 Q2 NANOSCIENCE & NANOTECHNOLOGY
P. C. Pattanaik, S. Mishra, S. Jena, P. Pattnaik
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引用次数: 8

摘要

本研究揭示了Williamson纳米流体在热浮力联合作用下通过平行通道的非牛顿流动特性。铜等金属具有良好的导热性,将其作为纳米颗粒浸没在基础流体水和煤油中,在嵌入多孔介质的通道内进行流动现象。对于外加磁场和磁导率的影响,忽略耗散热能的影响是不明智的。因此,焦耳和达西耗散也被认为是影响热性能的因素。该模型考虑了Mintsa模型的导热性和Gharesim模型粘度来增强传热性能。在各种工业和工程应用中,纳米流体被用作最佳冷却剂。适当的相似变量和流函数的使用有助于将控制非线性微分方程转化为非线性常微分方程。在此基础上,采用近似解析方法,如Adomian分解法来处理这些变换后的方程。通过图形和表格的形式给出了从各种流动特性的行为中得到的当前结果,以验证结果。观察结果表明,随着颗粒浓度的增加,流体速度减慢,但水基纳米流体的减慢超过了煤油基纳米流体的减慢。此外,与纯流体相比,颗粒浓度大大提高了纳米流体的温度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impact of radiative and dissipative heat on the Williamson nanofluid flow within a parallel channel due to thermal buoyancy
The present investigation reveals the non-Newtonian flow characteristics for the Williamson nanofluid through a parallel channel due to the conjunction of thermal buoyancy. As a good conductor of heat, the metal like Copper is treated as the nanoparticles submerged into the base fluids water and kerosene to perform the flow phenomena within the channel embedding with the porous medium. For the involvement of the applied magnetic field and permeability it is not wise to neglect the impact of dissipative heat energy. Therefore, both the Joule and the Darcy dissipations are also considered those are affecting the thermal properties. The model is developed considering the Mintsa model thermophysical properties of conductivity and the Gharesim model viscosity for the enhancement of heat transport properties. In various industrial as well as engineering applications nanofluids are used as a best coolant. The use of suitable similarity variables and stream function helps to transform the governing nonlinear differential equations into nonlinear ordinary. Further, an approximate analytical approach such as Adomian Decomposition Method is used to handle those transformed equations. The current outcomes obtained from the behavior of various flow characteristics are presented via graphs and table to validate the results. The observation shows that with an augmentation in the particle concentration, fluid velocity retards however the retardation in case of water-based nanofluid overrides the case of kerosene-based nanofluid. Further, particle concentration enriches the nanofluid temperature greatly in comparison to pure fluid.
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来源期刊
CiteScore
6.00
自引率
1.70%
发文量
24
期刊介绍: Proceedings of the Institution of Mechanical Engineers Part N-Journal of Nanomaterials Nanoengineering and Nanosystems is a peer-reviewed scientific journal published since 2004 by SAGE Publications on behalf of the Institution of Mechanical Engineers. The journal focuses on research in the field of nanoengineering, nanoscience and nanotechnology and aims to publish high quality academic papers in this field. In addition, the journal is indexed in several reputable academic databases and abstracting services, including Scopus, Compendex, and CSA's Advanced Polymers Abstracts, Composites Industry Abstracts, and Earthquake Engineering Abstracts.
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