Buongiorno模型纳米流体在收缩表面上自由对流的分析方法

IF 4.2 Q2 NANOSCIENCE & NANOTECHNOLOGY
Prakash Kumar Ratha, Satyaranjan Mishra, R. Tripathy, P. K. Pattnaik
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引用次数: 5

摘要

本文研究了不可压缩卡森纳米流体在倾斜磁场和焦耳加热引起的提前耗散热作用下在收缩的水平薄片上的二维非定常流动。提出的包含布朗和热泳的Buongiorno模型丰富了流动剖面。卡森模型是一种具有剪切变薄特性和高剪切粘度的塑性流体模型。所提出的流体模型也近似于其他液体的流变行为,如生理悬浮液、化妆品、糖浆等。通过适当的相似变量,将考虑Buongiorno模型效应的控制偏微分方程转化为非线性常微分方程。此外,Adomian分解法等近似解析技术有助于对变换后的控制方程进行求解,并通过图形说明了稳态和非稳态情况下贡献参数的显著性。此外,主要的贡献是;卡森参数和吸注参数的增加有利于速度剖面的平滑增强,布朗参数和热泳参数的增加也有利于流体温度的提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Analytical approach on the free convection of Buongiorno model nanofluid over a shrinking surface
This article focuses on the two-dimensional unsteady flow of an incompressible Casson nanofluid over a shrinking horizontal sheet under the influence of inclined magnetic field and in an advance dissipative heat due to Joule heating. The proposed Buongiorno model for the inclusion of Brownian and thermophoresis enriches the flow profiles. Casson model constituents a plastic fluid model that exhibits shear thinning characteristics and high shear viscosity. The proposed fluid model also approximates the rheological behavior of other liquids like physiological suspensions, cosmetics, syrups, etc. The governing partial differential equations (PDEs) that account for effect of Buongiorno model are converted in to nonlinear ordinary differential equations (ODEs) through suitable similarity variables. Further, approximate analytical technique such as Adomian Decomposition Method is beneficial to carry out the solution of the transformed governing equations and the significant nature of the contributing parameter for both the steady and unsteady case is presented via graphs. Moreover, the major contribution is; the Casson parameter along with suction/injection favors in the smooth enhancement in the velocity profiles and the fluid temperature also encouraged by the augmentation in Brownian and thermophoresis parameter.
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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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