Shape effects of nanosize particles in Cu-H2O nanofluid on entropy generation

被引：388

作者：

Ellahi, R. ^{[1
,2
]}

Hassan, M. ^{[2
]}

Zeeshan, A. ^{[2
]}

机构：

[1] Univ Calif Riverside, Dept Mech Engn, Riverside, CA 92521 USA

[2] IIUI, FBAS, Dept Math & Stat, Islamabad, Pakistan

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2015年 / 81卷

关键词：

Natural convection; Magnetohydrodynamic; Porosity; Nanofluid; Entropy generation; Hamilton-Crosser model; THERMAL-CONDUCTIVITY ENHANCEMENT; HOMOTOPY ANALYSIS METHOD; HEAT-TRANSFER; DIFFERENTIAL-EQUATIONS; NATURAL-CONVECTION; FLUID; SUSPENSIONS; SURFACE; LAYER; FLOW;

D O I：

10.1016/j.ijheatmasstransfer.2014.10.041

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

In this paper, a mathematical model is analyzed in order to study the natural convection boundary layer flow along an inverted cone. The shape of nanosize particles on entropy generation with based fluid is considered. Simultaneous effects of porous medium, magnetohydrodynamics, radiation and power law index effects are also taken into account. Hamilton-Crosser model is used for the effective thermal conductivity. The nonlinear coupled equations under the assumption of Boussinesq approximation are solved analytically. The calculations are performed for different governing parameters such as Prandtl number, Rayleigh number, power law index, porosity parameter, radiation parameter and magnetic parameter. The physical interpretations of obtained results are illustrated by graphs and tables. In addition, correlation of Nusselt number and skin friction corresponding to active parameters are also analyzed in this investigation. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：449 / 456

页数：8

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