当前位置: X-MOL 学术Int. J. Numer. Methods Heat Fluid Flow › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Irreversibility analysis of the couple stress hybrid nanofluid flow under the effect of electromagnetic field
International Journal of Numerical Methods for Heat & Fluid Flow ( IF 4.2 ) Pub Date : 2021-06-15 , DOI: 10.1108/hff-11-2020-0745
Taza Gul , Abdul Qadeer , Wajdi Alghamdi , Anwar Saeed , Safyan Mukhtar , Muhammad Jawad

Purpose

This paper aims to consider the heat transportation together with irreversibility analysis for the flow of couple stress hybrid nanofluid past over a stretching surface. The innovative characteristics of this paper include electro-magnetohydrodynamic (EMHD) term, viscous dissipation, Joule heating and heat absorption\omission. The hybrid nanofluid is prepared due to the suspension of the solid nanoparticles of the single wall and multi-wall carbon nanotubes (SWCNTs and MWCNTs) in the blood for the testing purpose of heat transfer and drug deliveries. The experimental value of the Prandtl number used for the blood is 21 from the available literature and very large as compared to the Prandtl number of the other base fluids. Appropriate transformations are incorporated to convert the modeled partial differential equations into the nonlinear ordinary differential equations. The homotopy analysis method (HAM) is used to obtain the solution. The explanation for velocity, energy and entropy are exposed under the influence of various parameters such as E, M, k, Q, S and Ec. The numerical values are calculated and summarized for dimensionless Cf and Nu.

Design/methodology/approach

In this investigation, heat transportation together with irreversibility analysis for the flow of couple stress hybrid nanofluid past over a stretching surface is considered. The innovative characteristics of this paper include EMHD term, viscous dissipation, Joule heating and heat absorption\omission. The hybrid nanofluid is prepared due to the suspension of the solid nanoparticles of the SWCNTs and MWCNTs in the blood for the testing purpose of heat transfer and drug deliveries. The experimental value of the Prandtl number used for the blood is 21 from the available literature and very large as compared to the Prandtl number of the other base fluids. Appropriate transformations are incorporated to convert the modeled partial differential equations into the nonlinear ordinary differential equations. The HAM is used to obtain the solution. The explanation for velocity, energy and entropy are exposed under the influence of various parameters such as E, M, k, Q, S and Ec. The numerical values are calculated and summarized for dimensionless Cf and Nu.

Findings

The explanation for velocity, energy and entropy are exposed and the flow against various influential factors is discussed graphically. The numerical values are calculated and summarized for dimensionless In addition, the current study is compared for various values of to that published literature and an impressive agreement in terms of finding is reported. It has also been noticed that the and factors retards the hybrid nanofluid flow, while the temperature of fluid becomes upsurges by the rise in these factors.

Originality/value

This is examined while evaluating the previously discussed publications that study on EMHD aspects of magnetized Casson type hybrid nanofluid via entropy generation research is innovative but also acknowledging that the couple stress model challenged bilaterally on stretching surface has not yet been studied. So, there is an ongoing attempt to bridge such a space.



中文翻译:

电磁场作用下耦合应力混合纳米流体流动的不可逆性分析

目的

本文旨在考虑热传递和不可逆性分析,分析耦合应力混合纳米流体在拉伸表面上的流动。本文的创新特点包括电磁流体力学(EMHD)项、粘性耗散、焦耳热和吸热\省略。由于单壁和多壁碳纳米管(SWCNTs 和 MWCNTs)的固体纳米粒子悬浮在血液中,因此制备了混合纳米流体,用于传热和药物输送的测试目的。来自可用文献的用于血液的普朗特数的实验值是 21,与其他基液的普朗特数相比非常大。结合适当的变换将建模的偏微分方程转换为非线性常微分方程。使用同伦分析方法(HAM)来获得解决方案。在 E、M、k、Q、S 和 Ec 等各种参数的影响下,暴露了对速度、能量和熵的解释。针对无量纲 Cf 和 Nu 计算和汇总数值。

设计/方法/方法

在这项研究中,考虑了热传递和不可逆性分析,对通过拉伸表面的耦合应力混合纳米流体的流动进行了考虑。本文的创新特点包括EMHD项、粘性耗散、焦耳热和吸热\省略。由于单壁碳纳米管和多壁碳纳米管的固体纳米粒子悬浮在血液中,因此制备了混合纳米流体,用于传热和药物输送的测试目的。来自可用文献的用于血液的普朗特数的实验值是 21,与其他基液的普朗特数相比非常大。结合适当的变换将建模的偏微分方程转换为非线性常微分方程。HAM 用于获得解决方案。在 E、M、k、Q、S 和 Ec 等各种参数的影响下,暴露了对速度、能量和熵的解释。针对无量纲 Cf 和 Nu 计算和汇总数值。

发现

揭示了对速度、能量和熵的解释,并以图形方式讨论了针对各种影响因素的流动。计算并总结了无量纲的数值此外,将当前研究的各种值与已发表的文献进行了比较,并报告了令人印象深刻的发现一致性。还注意到 和 因素阻碍了混合纳米流体的流动,而流体的温度因这些因素的增加而升高。

原创性/价值

在评估之前讨论的通过熵生成研究磁化卡森型混合纳米流体的 EMHD 方面的出版物时对此进行了检查,但也承认尚未研究在拉伸表面上双向挑战的耦合应力模型。因此,人们一直在尝试弥合这样的空间。

更新日期:2021-06-15
down
wechat
bug