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具有非线性化学反应、辐射和能源的MoS+GO混合纳米流体在旋转球体周围的流动与热传输特性。

Features of flow and heat transport of MoS+GO hybrid nanofluid with nonlinear chemical reaction, radiation and energy source around a whirling sphere.

作者信息

Nasir Saleem, Berrouk Abdallah S, Aamir Asim, Gul Taza, Ali Ishtiaq

机构信息

Mechanical Engineering Department, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates.

Center for Catalysis and Separation (CeCas), Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi, United Arab Emirates.

出版信息

Heliyon. 2023 Apr 3;9(4):e15089. doi: 10.1016/j.heliyon.2023.e15089. eCollection 2023 Apr.

Abstract

The current investigation employs a numerical simulation to demonstrate the impact of hall current on unsteady free convective flow caused by hybrid-nanofluid over a revolving sphere approaching the stagnation point. The prominent characteristics of Lorentz force as a result of magnetic field coupling with hybrid nanofluid is also explored. The process of energy and mass transmission is inspected with nonlinear thermal radiations, non-uniform energy supply, dissipation and nonlinear chemical reaction. In current flow model, a unique class of nanofluid known as the hybrid nanofluid is being used, which contain (graphene oxide) and (molybdenum disulfide) with water. The angular speed of both the sphere and free stream changes frequently with time. Employing adequate dimensionless variables, the partial-differential patterns strongly non-linear that represent the situational analysis are morphed into non-linear ordinary differential patterns. The analytical outcomes of ordinary differential pattern have been developed via OHAM technique. Utilizing tables and graphs, various aspects of such controllable physical characteristics have been highlighted and explored in depth. For varying values of and ,the variations in , and in are the greatest as contrasted to The results are also compared to those reported existing literature and they are noticed to be in very close agreement.

摘要

当前的研究采用数值模拟来证明霍尔电流对混合纳米流体在接近驻点的旋转球体上引起的非定常自由对流流动的影响。还探讨了磁场与混合纳米流体耦合产生的洛伦兹力的显著特性。通过非线性热辐射、非均匀能量供应、耗散和非线性化学反应来考察能量和质量传递过程。在当前的流动模型中,使用了一种独特的纳米流体类别,即混合纳米流体,它包含氧化石墨烯和二硫化钼与水。球体和自由流的角速度随时间频繁变化。采用适当的无量纲变量,将代表情境分析的强烈非线性偏微分模式转化为非线性常微分模式。常微分模式的解析结果已通过同伦分析方法(OHAM)得出。利用表格和图表,深入突出并探讨了这种可控物理特性的各个方面。对于不同的 和 值,与 相比, 在 中的 、 和 的变化最大。结果还与现有文献报道的结果进行了比较,发现它们非常吻合。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3c01/10113866/de99320f218b/ga1.jpg

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