混合纳米流体(Al \({}_{2}\) O \({}_{3}\) -Ag)/(C \({}_{2}\) H \({}_{6}\) O \({}_{2}\) -H \({}_{2}\) O)对具有非线性辐射效应的驻点流动的多重热影响:Cattaneo-Christov模型

IF 2.1 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
Pramana Pub Date : 2025-08-26 DOI:10.1007/s12043-025-02985-6
Sami Ullah Khan, Chemseddine Maatki, G Leena Rosalind Mary, K Sreelakshmi,  Adnan, Bilel Hadrich
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引用次数: 0

摘要

杂化纳米材料的最新进展提高了基液的热意义。混合纳米流体由两种不同类型的纳米颗粒组成,具有高度增强的热活性,因此它们在太阳能、发电、热装置、冷却现象等方面都有应用。本研究通过考虑斜驻点流动来探讨混合纳米流体的热影响。在这项研究中,混合纳米流体包括银(Ag)和氧化铝(Al \({}_{2}\) O \({}_{3}\))磁化纳米颗粒与水(H \({}_{2}\) O)以及乙二醇(C \({}_{2}\) H \({}_{6}\) O \({}_{2}\))基流体。采用一种改进的热通量框架(Cattaneo-Christov)来修正能量方程。流动包括保持吸力作用的多孔介质。观察到传热突破了非线性辐射效应。采用Runge-Kutta-Fehlberg五阶(rkf5)格式对无量纲控制方程进行数值模拟。对物理流动参数的贡献进行了分析。结果表明,当自由流滞流系数较大时,斜速减小。杂化纳米材料的中断有效地增强了多孔介质和吸力参数对传热的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Multiple thermal impact of the hybrid nanofluid (Al\({}_{2}\)O\({}_{3}\)–Ag)/(C\({}_{2}\)H\({}_{6}\)O\({}_{2}\)–H\({}_{2}\)O) on the stagnation point flow with nonlinear radiated effects: Cattaneo–Christov model

Recent advancements in hybrid nanomaterials have improved thermal significance of the base fluids. The hybrid nanofluids, which comprise two distinct type of nanoparticles, have highly strengthened thermal activities, because of which they have applications in solar energy, power production, thermal devices, cooling phenomenon, etc. This study is to explore the thermal impact of the hybrid nanofluid by entertaining the oblique stagnation point flow. In this study, a hybrid nanofluid comprising silver (Ag) and alumina (Al\({}_{2}\)O\({}_{3}\)) magnetised nanoparticles with water (H\({}_{2}\)O) along with ethylene glycol (C\({}_{2}\)H\({}_{6}\)O\({}_{2}\)) base fluids has been deliberated. A reformed heat flux framework (Cattaneo–Christov) has been followed to modify the energy equation. The flow comprises porous media maintaining suction effects. The heat transfer is observed to break through the nonlinear radiated effects. Runge–Kutta–Fehlberg fifth-order (RKF 5) scheme is implemented for performing the numerical simulations of dimensionless governing equations. Analysis was done to check the contribution of physical flow parameters. The observations conclude that when the free stream stagnation flow coefficient is prominent, the oblique velocity decreases. The interruption of hybrid nanomaterial effectively enhances the impact of heat transfer due to porous medium and suction parameter.

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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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