布朗和热泳二元化学反应对倾斜加热通道内纳米流体辐射流的有效特性

IF 2.2 4区 化学 Q3 CHEMISTRY, PHYSICAL Colloid and Polymer Science Pub Date : 2024-05-31 DOI:10.1007/s00396-024-05274-7
R. K. Sahoo, S. R. Mishra, Subhajit Panda
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引用次数: 0

摘要

本文提出了一项针对 Buongiorno 模型纳米流体在与平面壁倾斜的会聚和发散通道内流动的研究。报告了磁化对沿流动法线方向施加外加磁场的影响。此外,热辐射行为和二元化学配比的影响也分别在能量和浓度方程中得到了体现。假设通道两壁均匀受热,并假设通道壁附近的纳米粒子浓度为常数。然而,在描述所提出的设计流动问题时,采用了直角坐标系。通过实施适当的相似性规则,将由非线性耦合偏微分方程支配的问题概括和翻新为相应的非一维形式。此外,还使用 Runge-Kutta 四阶和射频技术对转换后的方程进行数值求解。问题中涉及的标准因子的物理行为以图形显示。该结果与之前的一项研究进行了验证,后者显示了良好的相关性以及对所提方法的收敛性分析。此外,所提研究的重要成果如下:雷诺数增加时,速度分布明显减慢;然而,布朗运动被视为流体温度的控制参数,在流体浓度情况下观察到反向影响。- 不仅考虑了热辐射的行为,还考虑了二元化学配比的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Effective properties of binary chemical reaction with Brownian and thermophoresis on the radiative flow of nanofluid within an inclined heated channel

An investigation is proposed for the Buongiorno model nanofluid flow within a converging as well as diverging channel which is inclined with the plane walls. The impact of magnetization is reported for the imposed of applied magnetic field along the normal direction of the flow. Additionally, the behavior of thermal radiation and the effect of binary chemical ration are implemented in the energy and concentration equation respectively. It is superimposed that both the channel walls are uniformly heated, and it is also assumed that concentration of the nanoparticles near the walls is considered as constant. However, the Cartesian coordinate system is imposed to describe the proposed designed flow problem. The formulated problem governed by nonlinear coupled partial differential equations is generalized and renovated to corresponding nondimensional form by implementing appropriate similarity rules. Further, the transformed equations are solved numerically using Runge-Kutta fourth order accompanied by shooting technique. The physical behavior of the standard factors involved in the problem is displayed graphically. Validation of the result is presented with an earlier study which shows a good correlation as well as convergence analysis of the proposed methodology. Further, the important outcomes of the proposed study are deployed as follows: the velocity distribution retards for the enhanced Reynolds number significantly; however, the Brownian motion is treated as a controlling parameter for the fluid temperature and reverse impact observed in case of fluid concentration.

Graphical Abstract

• The Buongiorno model nanofluid flow within a converging and diverging channel inclined with the plane walls is analysed.

• The behaviour of not only thermal radiation but also the effect of binary chemical ration is implemented.

• It is superimposed that both the channel walls are uniformly heated and it is also assumed that concentration of the nanoparticles near the walls is considered as constant.

• The transformed equations are solved numerically using Runge-Kutta fourth-order accompanied by shooting technique.

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来源期刊
Colloid and Polymer Science
Colloid and Polymer Science 化学-高分子科学
CiteScore
4.60
自引率
4.20%
发文量
111
审稿时长
2.2 months
期刊介绍: Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.
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