Magnetohydrodynamic hybrid nanofluid flow over a decelerating rotating disk with Soret and Dufour effects

IF 1.7 4区 材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Multidiscipline Modeling in Materials and Structures Pub Date : 2023-01-03 DOI:10.1108/mmms-08-2022-0160
N. Vijay, K. Sharma
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引用次数: 11

Abstract

PurposeThe investigation of fluid flow over a rotating disk has been increasing due to the spread of machine technology. Because of this development, we scrutinized the Magnetohydrodynamic (MHD) flow of hybrid nanofluid caused by a decelerating rotating disk with Ohmic heating, Soret and Dufour effects. The disk's angular velocity is taken to be an inversely time-dependent linear function. Moreover, the temperature-dependent viscosity of hybrid nanofluid is incorporated in the present investigation. Methanol is considered as base fluid, while copper oxide (CuO) and magnesium oxide (MgO) are nanoparticles.Design/methodology/approachEstimated fundamental partial differential equations of flow problems are altered as a dimensionless system of ordinary differential equations using appropriate similarity transformation and solved using a numerical technique: BVP Midrich scheme in Maple software. The impression of emerging non-dimensional parameters is portrayed graphically. All outcomes are shown in the velocity, temperature and concentration profiles.FindingsThe developed flow problem involves a non-dimensional parameter (A) that reveals the deceleration of the disk. For larger values of A, the disk decelerates faster and for some fixed time, the fluid surrounding the disk revolves more rapidly than the disk itself. The radial velocity of fluid diminishes and axial velocity becomes uniform when the disk is subjected to wall suction velocity (B).Originality/valueThis analysis is significant in biomedical engineering, cancer therapeutic, manufacturing industries and nano-drug suspension in pharmaceuticals. The novelty of the current study is the hybrid nanofluid flow with Ohmic heating, Soret and Dufour effects on a decelerating rotating disk. To the best of the author's knowledge, no such consideration has been published in the literature.
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具有Soret和Dufour效应的减速旋转圆盘上磁流体动力混合纳米流体的流动
目的随着机械技术的发展,对旋转圆盘上流体流动的研究越来越多。由于这一进展,我们仔细研究了由减速旋转盘引起的混合纳米流体的磁流体动力学(MHD)流动,并伴有欧姆加热,Soret和Dufour效应。圆盘的角速度被认为是一个逆时线性函数。此外,混合纳米流体的黏度随温度的变化也被纳入了本研究。甲醇被认为是基液,而氧化铜(CuO)和氧化镁(MgO)是纳米颗粒。设计/方法/方法流动问题的估计基本偏微分方程被改变为一个无量纲系统的常微分方程使用适当的相似变换和解决使用数值技术:BVP Midrich方案在Maple软件。对出现的无量纲参数的印象用图形表示。所有结果都显示在速度、温度和浓度曲线中。所开发的流动问题涉及一个揭示圆盘减速的无量纲参数(a)。对于较大的A值,磁盘减速更快,并且在一段固定时间内,磁盘周围的流体比磁盘本身旋转得更快。当磁盘受到壁吸速度时,流体的径向速度减小,轴向速度趋于均匀(B)。独创性/价值该分析在生物医学工程,癌症治疗,制造业和制药中的纳米药物悬浮液中具有重要意义。当前研究的新颖之处是在减速旋转圆盘上混合纳米流体的欧姆加热、索雷特和杜福效应。据作者所知,没有这样的考虑已发表在文献中。
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来源期刊
CiteScore
3.70
自引率
5.00%
发文量
60
期刊介绍: Multidiscipline Modeling in Materials and Structures is published by Emerald Group Publishing Limited from 2010
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