纳米尺寸颗粒的形状效应及其对磁流体动力学纳米流体在具有熵产生的拉伸片上流动和传热的影响

Shape Effect of Nanosize Particles on Magnetohydrodynamic Nanofluid Flow and Heat Transfer over a Stretching Sheet with Entropy Generation.

作者信息

Rashid Umair, Baleanu Dumitru, Iqbal Azhar, Abbas Muhammd

机构信息

Department of Modern Mechanics, CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, China.

Department of Mathematics, Faculty of Arts and Sciences, Cankaya University, Ankara 06530, Turkey.

出版信息

Entropy (Basel). 2020 Oct 18;22(10):1171. doi: 10.3390/e22101171.

DOI:10.3390/e22101171

PMID:33286940

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7597342/

Abstract

Magnetohydrodynamic nanofluid technologies are emerging in several areas including pharmacology, medicine and lubrication (smart tribology). The present study discusses the heat transfer and entropy generation of magnetohydrodynamic (MHD) Ag-water nanofluid flow over a stretching sheet with the effect of nanoparticles shape. Three different geometries of nanoparticles-sphere, blade and lamina-are considered. The problem is modeled in the form of momentum, energy and entropy equations. The homotopy analysis method (HAM) is used to find the analytical solution of momentum, energy and entropy equations. The variations of velocity profile, temperature profile, Nusselt number and entropy generation with the influences of physical parameters are discussed in graphical form. The results show that the performance of lamina-shaped nanoparticles is better in temperature distribution, heat transfer and enhancement of the entropy generation.

摘要

磁流体动力学纳米流体技术正在药理学、医学和润滑（智能摩擦学）等多个领域兴起。本研究讨论了具有纳米颗粒形状效应的磁流体动力学（MHD）银 - 水纳米流体在拉伸片上流动时的传热和熵产生情况。考虑了三种不同几何形状的纳米颗粒——球形、叶片形和薄片形。该问题以动量、能量和熵方程的形式进行建模。采用同伦分析法（HAM）来求解动量、能量和熵方程的解析解。以图形形式讨论了速度分布、温度分布、努塞尔数和熵产生随物理参数影响的变化情况。结果表明，薄片形纳米颗粒在温度分布、传热和熵产生增强方面的性能更好。