Thermal-flow boundary layer analysis of nanofluid over a porous stretching cylinder under the magnetic field effect

被引：50

作者：

Nourazar, S. S. ^{[1
]}

Hatami, M. ^{[2
]}

Ganji, D. D. ^{[3
]}

Khazayinejad, M. ^{[1
]}

机构：

[1] Amirkabir Univ Technol, Dept Mech Engn, Tehran, Iran

[2] Esfarayen Univ Technol, Dept Mech Engn, Esfarayen, North Khorasan, Iran

[3] Babol Univ Technol, Dept Mech Engn, Babol Sar, Iran

来源：

POWDER TECHNOLOGY | 2017年 / 317卷

关键词：

Nanofluid; Porous stretching cylinder; OCM; Nusselt number; Heat transfer; HEAT-TRANSFER; MASS-TRANSFER; REFRIGERATION EFFICIENCY; 3-DIMENSIONAL FLOW; SPHERICAL-PARTICLE; NATURAL-CONVECTION; MOTION; SHEET; FINS; MODELS;

D O I：

10.1016/j.powtec.2017.05.010

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this paper, thermal-flow boundary layer of single-phase Nanofluid over a horizontal cylinder tube under magnetic force is investigated using Optimal Collocation Method (OCM) and numerical method. After presenting the governing equations and solving them by OCM, the accuracy of results is examined by fourth order Runge-Kutta numerical method. The boundary conditions contain infinite condition due to stretching cylinder, thus it needs to a powerful analytical method to solve it. OCM which is firstly introduced by authors is the simple/powerful method for this analysis. Effects of different nanoparticles (TiO2, Cu and Ag) are investigated on the temperature/velocity profiles as well as Nusselt number and boundary layer thickness. Additionally, the influence of relevant parameters such as the magnetic parameter, the solid volume fraction of nanoparticles on the flow, heat transfer, Nusselt number and skin friction coefficient is discussed. (C) 2017 Published by Elsevier B.V.

引用

页码：310 / 319

页数：10

共 38 条

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