Magnetohydrodynamic nanofluid convection in a porous enclosure considering heat flux boundary condition

被引：268

作者：

Sheikholeslami, M. ^{[1
]}

Shehzad, S. A. ^{[2
]}

机构：

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

[2] COMSATS Inst Informat Technol, Dept Math, Sahiwal 57000, Pakistan

来源：

INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER | 2017年 / 106卷

关键词：

Porous media; Nanofluid; MHD; Heat flux; Natural convection; MHD FREE-CONVECTION; NATURAL-CONVECTION; MAGNETIC-FIELD; THERMAL-RADIATION; STRETCHING SURFACE; RECTANGULAR ENCLOSURE; 3-DIMENSIONAL FLOW; STAGNATION POINT; SEMI-ANNULUS; CAVITY;

D O I：

10.1016/j.ijheatmasstransfer.2016.10.107

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Magnetohydrodynamic CuO-water nanofluid flow in a porous semi annulus with constant heat flux is studied by means of Control Volume based Finite Element Method. Koo-Kleinstreuer-Li correlation and Darcy model are applied for nanofluid and porous media, respectively. Effective parameters are radius of inner cylinder, CuO-water volume fraction, Hartmann and Rayleigh numbers for porous medium. A formula for Nu is presented. Results revealed that heat transfer augmentation decreases with rise of buoyancy forces. Influence of adding nanoparticle augments with increase of Lorentz forces. Increasing Hartmann number leads to a reduction in temperature gradient. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：1261 / 1269

页数：9

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