Natural Convection Heat Transfer in an Enclosure Filled with an Ethylene Glycol-Copper Nanofluid Under Magnetic Fields

被引：54

作者：

Ben Hamida, M. B. ^{[1
]}

Charrada, K. ^{[1
]}

机构：

[1] IPEIM, Unite Etud Milieux Ionise & Reactifs, Monastir, Tunisia

来源：

NUMERICAL HEAT TRANSFER PART A-APPLICATIONS | 2015年 / 67卷 / 08期

关键词：

THERMAL-BOUNDARY CONDITIONS; WATER-BASED NANOFLUIDS; RECTANGULAR ENCLOSURE; MAGNETOHYDRODYNAMIC CONVECTION; NUMERICAL-SIMULATION; INCLINED ENCLOSURE; LIQUID GALLIUM; SQUARE CAVITY; FLOW; VISCOSITY;

D O I：

10.1080/10407782.2014.949209

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This article presents the results of a numerical study on natural convection in a square enclosure filled with ethylene glycol-copper nanofluid in the presence of magnetic fields. Two opposite horizontal walls of the enclosure are insulated and the two vertical walls are kept constant at different temperatures. A uniform horizontal magnetic field is externally imposed. The governing equations (mass, momentum, and energy) are formulated and solved numerically with a finite element using COMSOL Multiphysics. The effects of pertinent parameters such as Rayleigh number (10(3)<= Ra <= 10(7)), Hartmann number (0 <= Ha <= 120), and solid volume fraction (0 <=phi <= 0.06) on the flow and the heat transfer performance of the enclosure are examined when the Prandtl number is assumed to be Pr=151.

引用

页码：902 / 920

页数：19

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