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在热跃变条件下发动机油流中铜和二氧化钛的特性。

Features of Cu and TiO in the flow of engine oil subject to thermal jump conditions.

作者信息

Ahmad Sohail, Ali Kashif, Nisar Kottakkaran Sooppy, Faridi Aftab Ahmed, Khan Nargis, Jamshed Wasim, Khan T M Yunus, Saleel C Ahamed

机构信息

Centre for Advanced Studies in Pure and Applied Mathematics (CASPAM), Bahauddin Zakariya University, Multan, 60800, Pakistan.

Department of Basic Sciences and Humanities, Muhammad Nawaz Sharif University of Engineering and Technology, Multan, Pakistan.

出版信息

Sci Rep. 2021 Oct 1;11(1):19592. doi: 10.1038/s41598-021-99045-x.

DOI:10.1038/s41598-021-99045-x
PMID:34599240
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8486821/
Abstract

The recent work investigates the heat transfer attributes in the flow of engine oil which comprises of nano-particles such as Cu and TiO. The performance of Copper and Titanium oxide is over looked in the flow of engine oil. The energy equation is amended by the features of thermal radiation, viscous dissipation, and heat generation. The mathematical model signifies the porosity, entropy generation and moving flat horizontal surface with the non-uniform stretching velocity. Quasi-linearization, which is a persuasive numerical technique to solve the complex coupled differential equations, is used to acquire the numerical solution of the problem. Flow and heat transfer aspects of Cu-TiO in the flow are examined against the preeminent parameters. The flow is significantly affected by the thermal jump conditions and porous media. It is observed here that the temperature as well as heat transport rate is reduced with the effect of involved preeminent parameters. However, such fluids must be used with caution in applications where a control on the heat transfer is required. We may conclude that the recent study will provide assistance in thermal cooling systems such as engine and generator cooling, nuclear system cooling, aircraft refrigeration system, and so forth.

摘要

最近的研究探讨了包含铜（Cu）和二氧化钛（TiO）等纳米颗粒的发动机油流中的传热特性。在发动机油流中，氧化铜和二氧化钛的性能被忽视了。能量方程通过热辐射、粘性耗散和热生成等特性进行了修正。该数学模型表示了孔隙率、熵产生以及具有非均匀拉伸速度的移动平坦水平面。拟线性化是一种求解复杂耦合微分方程的有效数值技术，用于获得该问题的数值解。针对主要参数，研究了铜 - 二氧化钛在流中的流动和传热情况。流动受到热跃变条件和多孔介质的显著影响。在此观察到，随着相关主要参数的影响，温度以及热传输速率会降低。然而，在需要控制传热的应用中，必须谨慎使用此类流体。我们可以得出结论，最近的这项研究将为发动机和发电机冷却、核系统冷却、飞机制冷系统等热冷却系统提供帮助。

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Effects of Different Shaped Nanoparticles on the Performance of Engine-Oil and Kerosene-Oil: A generalized Brinkman-Type Fluid model with Non-Singular Kernel.不同形状纳米颗粒对发动机油和煤油性能的影响：一种具有非奇异核的广义布林克曼型流体模型
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Rotating flow of Ag-CuO/HO hybrid nanofluid with radiation and partial slip boundary effects.
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具有辐射和部分滑移边界效应的Ag-CuO/HO混合纳米流体的旋转流动
Eur Phys J E Soft Matter. 2018 Jun 14;41(6):75. doi: 10.1140/epje/i2018-11682-y.