Effects of heat source and sink on entropy generation and MHD natural convection of Al2O3-Cu/water hybrid nanofluid filled with square porous cavity

被引：169

作者：

Mansour, M. A. ^{[1
]}

Siddiqa, Sadia ^{[2
]}

Gorla, Rama Subba Reddy ^{[3
]}

Rashad, A. M. ^{[4
]}

机构：

[1] Assiut Univ, Fac Sci, Dept Math, Assiut, Egypt

[2] COMSATS Inst Informat Technol, Dept Math, Attock, Pakistan

[3] Cleveland State Univ, Dept Mech Engn, Cleveland, OH 44115 USA

[4] Aswan Univ, Fac Sci, Dept Math, Aswan 81528, Egypt

来源：

THERMAL SCIENCE AND ENGINEERING PROGRESS | 2018年 / 6卷

关键词：

Magneto-hydrodynamics; Entropy generation; Natural convection; Hybrid nanofluid; Square cavity;

D O I：

10.1016/j.tsep.2017.10.014

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The present work is focused on the analysis of the entropy generation and magneto-hydrodynamics natural convection flow and heat transfer in a square porous cavity differentially heated and cooled by heat source and sink, respectively filled with the Cu-Al2O3-Water hybrid nanofluid. The effective segments of the left and right sides of the cavity are kept at cooled temperature and the effective segments of top and bottom sides are kept at hot temperature. The enclosure's ineffective segments of its sides are kept adiabatic. The thermal conductivity and the dynamic viscosity of the nanofluid are represented by different experimental correlations which are suitable to each nanoparticles. The finite difference methodology is used to solve the dimensionless partial differential equations governing the problem. A comparison with previously published studies and the present results shows very good agreement. Results are presented for entropy production in terms of Hartmann number, nanoparticle volume fraction and geometric parameters of the cavity.

引用

页码：57 / 71

页数：15

共 21 条

[1] Effect of nanofluid variable properties on natural convection in enclosures filled with a CuO-EG-Water nanofluid [J].