考虑马兰戈尼对流的耦合应力纳米流体流过拉伸表面的对流分析

IF 2.3 4区 工程技术 Q2 INSTRUMENTS & INSTRUMENTATION
Umer Farooq, Muzamil Hussain, Noshan Shabbir, Mikhail Sheremet
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引用次数: 0

摘要

在马兰戈尼对流作用下的纳米流体对流分析,为热控制和流体动力学提供了重要的见解。这种现象在许多应用中都是至关重要的,包括电子冷却、热交换器、太阳能集热器,以及通过改善流体流动和促进材料加工过程中的受控结晶来提高石油采收率。受上述应用的启发,目前的研究重点是在考虑马兰戈尼对流、磁场、纳米颗粒形状因素和热辐射的情况下,纳米流体在拉伸表面上的耦合应力流动。基于血液的纳米流体,考虑到纳米颗粒(金(Au)和氧化铁(Fe2O3))是本研究的目标。边界层假设和守恒定律被用来为假设问题建立一个控制数学系统。利用适当的相似变换,将假定问题的偏微分方程转化为常微分方程。在MATLAB中使用bvp4c(解决边值问题的方法)求解器生成数值结果。结果表明,随着Marangoni数的增加,速度剖面增大,温度呈下降趋势。速度分布随磁参数的增大而减小。所研究的纳米流体的温度分布随着普朗特数和耦合应力参数的增大而减小。新出现的无量纲参数对表面摩擦和努塞尔数的影响也以表格形式显示。研究可能会大大改善纳米流体系统的设计、药物输送技术、可再生能源技术、材料工程和电子冷却系统。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Convection analysis of couple stress nanofluid flow across stretching surface with the considerations of Marangoni convection

The convection analysis of nanofluid flow under the effect of Marangoni convection, provides important insights into thermal control and fluid dynamics. This phenomenon is critical in many applications, including electronic cooling, heat exchangers, solar thermal collectors, and enhancement in oil recovery by improving fluid flow and promoting controlled crystallization during material processing. Inspired by applications mentioned above, the present research focuses on the couple stress nanofluid flow across a stretching surface while accounting the Marangoni convection, magnetic field, nanoparticles shape factors and thermal radiations. Blood based nanofluid, with the considerations of nanoparticles (gold(Au) and iron-oxide(Fe2O3)) is supposed for the present research. Boundary layer assumptions and conservation laws are utilized to model a governing mathematical system for the assumed problem. The emerging partial differential equations (PDEs) of the supposed problem is transformed to the ordinary differential equations (ODEs) by utilizing the appropriate similarity transformations. The numerical outcomes are generated in MATLAB using the bvp4c (approach is designed to solve boundary value problems) solver. Results indicates that the increasing estimates of Marangoni number leads the enhancement in the velocity profile and temperature shows a declining trend in the considered scenarios. It is also observed that the velocity-distribution diminishes for the increasing values of magnetic parameter. The temperature profile of the studied nanofluid is decreasing when the Prandtl number and couple stress parameter increases. The effects of the emerging dimensionless parameters on skin friction and Nusselt number are also revealed in the tabulated form. Research may substantially improve the design of nanofluid-based systems, drug delivery techniques, renewable energy technologies, materials engineering, and electronic cooling systems.

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来源期刊
Microfluidics and Nanofluidics
Microfluidics and Nanofluidics 工程技术-纳米科技
CiteScore
4.80
自引率
3.60%
发文量
97
审稿时长
2 months
期刊介绍: Microfluidics and Nanofluidics is an international peer-reviewed journal that aims to publish papers in all aspects of microfluidics, nanofluidics and lab-on-a-chip science and technology. The objectives of the journal are to (1) provide an overview of the current state of the research and development in microfluidics, nanofluidics and lab-on-a-chip devices, (2) improve the fundamental understanding of microfluidic and nanofluidic phenomena, and (3) discuss applications of microfluidics, nanofluidics and lab-on-a-chip devices. Topics covered in this journal include: 1.000 Fundamental principles of micro- and nanoscale phenomena like, flow, mass transport and reactions 3.000 Theoretical models and numerical simulation with experimental and/or analytical proof 4.000 Novel measurement & characterization technologies 5.000 Devices (actuators and sensors) 6.000 New unit-operations for dedicated microfluidic platforms 7.000 Lab-on-a-Chip applications 8.000 Microfabrication technologies and materials Please note, Microfluidics and Nanofluidics does not publish manuscripts studying pure microscale heat transfer since there are many journals that cover this field of research (Journal of Heat Transfer, Journal of Heat and Mass Transfer, Journal of Heat and Fluid Flow, etc.).
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