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幂律混合纳米流体在移动平板上流动时的非傅里叶能量传递

Non-Fourier energy transmission in power-law hybrid nanofluid flow over a moving sheet.

作者信息

Alhowaity Awatif, Bilal Muhammad, Hamam Haneen, Alqarni M M, Mukdasai Kanit, Ali Aatif

机构信息

Department of Mathematics, College of Science and Arts at Alkamil, University of Jeddah, Jeddah, Saudi Arabia.

Department of Mathematics, City University of Science and Information Technology, Peshawar, 25000, Pakistan.

出版信息

Sci Rep. 2022 Jun 21;12(1):10406. doi: 10.1038/s41598-022-14720-x.

Abstract

Ethylene glycol is commonly used as a cooling agent in the engine, therefore the study associated with EG has great importance in engineering and mechanical fields. The hybrid nanofluid has been synthesized by adding copper and graphene nanoparticles into the Ethylene glycol, which obeys the power-law rheological model and exhibits shear rate-dependent viscosity. As a result of these features, the power-law model is utilized in conjunction with thermophysical characteristics and basic rules of heat transport in the fluid to simulate the physical situations under consideration. The Darcy Forchhemier hybrid nanofluid flow has been studied under the influence of heat source and magnetic field over a two-dimensionally stretchable moving permeable surface. The phenomena are characterized as a nonlinear system of PDEs. Using resemblance replacement, the modeled equations are simplified to a nondimensional set of ODEs. The Parametric Continuation Method has been used to simulate the resulting sets of nonlinear differential equations. Figures and tables depict the effects of physical constraints on energy, velocity and concentration profiles. It has been noted that the dispersion of copper and graphene nanoparticulate to the base fluid ethylene glycol significantly improves velocity and heat conduction rate over a stretching surface.

摘要

乙二醇通常用作发动机中的冷却剂,因此与乙二醇相关的研究在工程和机械领域具有重要意义。通过将铜和石墨烯纳米颗粒添加到乙二醇中合成了混合纳米流体,该混合纳米流体服从幂律流变模型并表现出剪切速率依赖性粘度。由于这些特性,幂律模型与流体中的热物理特性和热传输基本规则一起用于模拟所考虑的物理情况。研究了在热源和磁场影响下,二维可拉伸移动渗透表面上的达西-福希海默混合纳米流体流动。这些现象被表征为一个非线性偏微分方程组。通过相似替换,将建模方程简化为一组无量纲常微分方程。使用参数连续法来模拟所得的非线性微分方程组。图表描述了物理约束对能量、速度和浓度分布的影响。已经注意到,铜和石墨烯纳米颗粒在基础流体乙二醇中的分散显著提高了拉伸表面上的速度和热传导率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fe1/9213488/f7ae86fe9042/41598_2022_14720_Fig1_HTML.jpg

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