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具有趋旋光性微生物和非线性热辐射的正切双曲纳米流体的化学反应性生物对流流动

Chemically reactive bioconvection flow of tangent hyperbolic nanoliquid with gyrotactic microorganisms and nonlinear thermal radiation.

作者信息

Al-Khaled Kamel, Khan Sami Ullah, Khan Ilyas

机构信息

Department of Mathematics & Statistics, Jordan University of Science and Technology, P.O. Box 3030, Irbid, 22110, Jordan.

Department of Mathematics, COMSATS University Islamabad, Sahiwal, 57000, Pakistan.

出版信息

Heliyon. 2019 Dec 30;6(1):e03117. doi: 10.1016/j.heliyon.2019.e03117. eCollection 2020 Jan.

Abstract

On the account of motivating fabrication of bioconvection phenomenon in various engineering and industrial systems, an attention has been devoted by researchers in current decade. Therefore, this theoretical investigation deals with the utilization of bioconvection phenomenon in flow of tangent hyperbolic nanofluid over an accelerated moving surface. It is assumed that the flow is generated due to periodically motion of the sheet. The energy equation is modified by entertaining the nonlinear thermal radiation features. The chemical reaction effects are elaborated in the concentration equation. Moreover, the significance of present flow problem increases by utilizing the thermophoresis and Brownian motion effects. The governing equations are transmuted into non-dimensional form with utilization of appropriate quantities. The analytical solution is computed by using homotopy analysis method. The implications of promising parameters on velocity profile, temperature profile, nanoparticles volume fraction and microorganisms profile is evaluated graphically. The presence of radiation parameter, thermophoresis and Brownian motion effects are more frequent for enhancement of heat transfer. The reported observations can efficiently use in the improvement of heat transfer devices as well as microbial fuel cells.

摘要

鉴于在各种工程和工业系统中激发生物对流现象的重要性,近十年来研究人员对此给予了关注。因此,本理论研究探讨了双曲正切纳米流体在加速运动表面流动时生物对流现象的应用。假设流动是由平板的周期性运动产生的。通过考虑非线性热辐射特征对能量方程进行了修正。在浓度方程中阐述了化学反应效应。此外,利用热泳和布朗运动效应增加了当前流动问题的重要性。利用适当的量将控制方程转化为无量纲形式。采用同伦分析法计算解析解。通过图形评估了有前景的参数对速度分布、温度分布、纳米颗粒体积分数和微生物分布的影响。辐射参数、热泳和布朗运动效应的存在对强化传热更为显著。所报道的观察结果可有效地用于改进传热装置以及微生物燃料电池。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1eeb/6940638/5ca64fdf567f/gr1.jpg

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