热辐射和磁场在微极性流体流经多孔通道壁与混合纳米颗粒中的不确定效应

IF 1.9 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY Pramana Pub Date : 2024-07-04 DOI:10.1007/s12043-024-02758-7
Ajay Kumar, Ramakanta Meher
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引用次数: 0

摘要

本研究考虑了流经通道壁间阻性多孔介质的微极性混合纳米流体,通过考虑不同形状的纳米颗粒,如铜(Cu)和混合纳米颗粒,如铜-氧化铝(Cu-Al(_{2}\)O(_{3})\),研究了热辐射和磁场对速度和热剖面的不确定影响。考虑到流动的热辐射和磁场影响,研究了球形、圆柱形和叶片形三种不同形式的纳米粒子。在这里,纳米粒子的体积分数用范围从 0 到 2.5% 的三角模糊数来表示,通过采用基于双参数的同调方法来研究其对速度和热剖面的不确定影响。同调分析方法因其快速的求解收敛性,已被证明在近似求解各种非线性问题方面具有功效。所获得的结果与现有的简明案例结果进行了验证,并通过图形和数值说明研究了模糊速度、微气浮、温度和浓度曲线在不同参数影响下的行为。研究结果表明,尽管存在微极性效应和多孔性,但与圆柱形和球形纳米粒子相比,混合纳米流体和叶片形纳米粒子的热传导率有所提高。
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Uncertain effects of thermal radiation and magnetic field in the micropolar fluid flow through porous channel walls with hybrid nanoparticles

This work considers a micropolar hybrid nanofluid flow through a resistive porous media between channel walls to study the uncertain effects of thermal radiation and magnetic field on the velocity and thermal profiles by considering distinctly shaped nanoparticles such as copper (Cu) and hybrid nanoparticles such as copper–alumina (Cu–Al\(_{2}\)O\(_{3})\). Three different forms of the nanoparticles, spherical, cylindrical and blade are examined considering the flow’s heat radiation and magnetic field impact. Here, the volume fractions of nanoparticles are expressed with the triangular fuzzy number ranging from 0 to 2.5% to examine its uncertain effects on the velocity and thermal profiles by employing a double parameter-based homotopy approach. The homotopy analytical approach has proven its efficacy in approximating solutions to diverse nonlinear problems owing to its rapid solution convergence. The obtained results are validated with the available results in crisp cases, and a graphical with numerical illustration has been made to study the behaviour of the fuzzy velocity, microrotation, temperature and concentration profiles under the effect of distinct parameters. The findings of this study indicate that, despite micropolar effects and porosity, the heat transmission rate is improved in hybrid nanofluids and blade-shaped nanoparticles compared to cylindrical and spherical-shaped nanoparticles.

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来源期刊
Pramana
Pramana 物理-物理:综合
CiteScore
3.60
自引率
7.10%
发文量
206
审稿时长
3 months
期刊介绍: Pramana - Journal of Physics is a monthly research journal in English published by the Indian Academy of Sciences in collaboration with Indian National Science Academy and Indian Physics Association. The journal publishes refereed papers covering current research in Physics, both original contributions - research papers, brief reports or rapid communications - and invited reviews. Pramana also publishes special issues devoted to advances in specific areas of Physics and proceedings of select high quality conferences.
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