非对称通道中杰弗里纳米流体多滑移蠕动流动的双扩散生物对流效应

IF 1.9 4区 物理与天体物理 Q2 PHYSICS, MULTIDISCIPLINARY
Pramana Pub Date : 2023-07-12 DOI:10.1007/s12043-023-02582-5
Asha S Kotnurkar, Namrata Kallolikar, Esraa N Thabet
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引用次数: 1

摘要

由于纳米流体在工业和纳米技术中的广泛应用,科学家和工程师们对纳米流体力学这一学科给予了特别的关注。在流体力学领域,这是一个相当有趣的研究课题。由于其在许多重要液体流变模型中的有用应用,我们试图证明杰弗里纳米流体模型。目的是显示在粘性耗散和生物对流存在下,非对称通道中蠕动流动的多滑移边界条件的影响。双扩散对流流动饱和了含有旋转微生物的杰弗里纳米流体。通过适当的无量纲参数将量纲控制方程转化为无量纲形式。用解析法求出了无量纲系统的解。用图形分析了不同物理特性对速度、温度、浓度、体积分数和俘获现象的影响。研究发现,在生物对流瑞利数、双扩散和纳米流体浮力比的情况下,速度滑移参数使速度剖面增大,而速度剖面减小;在生物对流常数和Peclet数的作用下,运动微生物的密度减小。本研究对血流动力学的学术研究、生物医学和理论研究,以及对维持生态系统和人类健康有利的微生物的研究具有重要意义。在少数情况下,目前的分析显示与以前公布的结果有很大的一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Double-diffusive bioconvection effects on multi-slip peristaltic flow of Jeffrey nanofluid in an asymmetric channel

Due to the numerous uses of nanofluids in industry and nanotechnology, scientists and engineers have given special attention to the subject of nanofluid mechanics. In the realm of fluid mechanics, it is a considerably more interesting research topic. Motivated by its useful applications in the rheological modelling of many important liquids, we seek to demonstrate the Jeffrey nanofluid model. The intention is to show the effects of multi-slip boundary condition of peristaltic flow in an asymmetric channel in the presence of viscous dissipation and bioconvection. Double diffusive convective flow is saturated with Jeffrey nanofluid containing gyrotatic micro-organism. The dimensional governing equations are converted into non-dimensional forms by suitable dimensionless parameters. The analytical method has been used to obtain solutions for the non-dimensionless system. The impact of different physical characteristics on velocity, temperature, concentration, volume fraction and trapping phenomenon has been analysed through graphs. From the study, it is observed that the velocity slip parameter increases the velocity profile, whereas the velocity profile decreases in the case of bioconvection Rayleigh number, double-diffusive and nanofluid buoyancy ratio, and it is also noticed that the density of the motile micro-organism is lowered by the Peclet number and for bioconvection constant. The present study is useful in academic research, biomedicine and theoretical studies of hemodynamics, and also micro-organisms that are favourable in maintaining the ecosystem and human health. In a few cases, the current analysis shows a substantial agreement with previously published results.

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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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