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波纹旋转盘表面上导热混合纳米流体流动的数值分析

Numerical analysis of thermal conductive hybrid nanofluid flow over the surface of a wavy spinning disk.

作者信息

Ahmadian Ali, Bilal Muhammad, Khan Muhammad Altaf, Asjad Muhammad Imran

机构信息

Institute of IR 4.0, The National University of Malaysia (UKM), 43600, Bangi, Selangor, Malaysia.

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

出版信息

Sci Rep. 2020 Nov 2;10(1):18776. doi: 10.1038/s41598-020-75905-w.

Abstract

A three dimensional (3D) numerical solution of unsteady, Ag-MgO hybrid nanoliquid flow with heat and mass transmission caused by upward/downward moving of wavy spinning disk has been scrutinized. The magnetic field has been also considered. The hybrid nanoliquid has been synthesized in the presence of Ag-MgO nanoparticles. The purpose of the study is to improve the rate of thermal energy transmission for several industrial purposes. The wavy rotating surface increases the heat transmission rate up to 15%, comparatively to the flat surface. The subsequent arrangement of modeled equations is diminished into dimensionless differential equation. The obtained system of equations is further analytically expounded via Homotopy analysis method HAM and the numerical Parametric continuation method (PCM) method has been used for the comparison of the outcomes. The results are graphically presented and discussed. It has been presumed that the geometry of spinning disk positively affects the velocity and thermal energy transmission. The addition of hybrid nanoparticles (silver and magnesium-oxide) significantly improved thermal property of carrier fluid. It uses is more efficacious to overcome low energy transmission. Such as, it provides improvement in thermal performance of carrier fluid, which play important role in power generation, hyperthermia, micro fabrication, air conditioning and metallurgical field.

摘要

研究了由波浪形旋转盘上下移动引起的具有热质传递的非稳态Ag-MgO混合纳米流体流动的三维(3D)数值解。同时考虑了磁场。在Ag-MgO纳米颗粒存在的情况下合成了混合纳米流体。该研究的目的是为了多种工业目的提高热能传输速率。与平面相比,波浪形旋转表面将热传输速率提高了15%。将建立的方程组简化为无量纲微分方程。通过同伦分析法(HAM)进一步对所得方程组进行解析阐述,并使用数值参数连续法(PCM)对结果进行比较。结果以图形方式呈现和讨论。据推测,旋转盘的几何形状对速度和热能传输有积极影响。混合纳米颗粒(银和氧化镁)的添加显著改善了载液的热性能。它在克服低能量传输方面更有效。例如,它提高了载液的热性能,这在发电、热疗、微制造、空调和冶金领域中起着重要作用。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/4c24/7606498/2e160307d4dd/41598_2020_75905_Fig1_HTML.jpg

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