Numerical Investigation for the Modeling of the Magnetic Buoyancy Force during the Natural Convection of Air in a Square Enclosure

被引：6
|
作者：
Song, Kewei [1 ,2 ]
Tagawa, Toshio [2 ]
Wang, Liang-bi [1 ]
Ozoe, Hiroyuki [3 ]
机构：
[1] Lanzhou Jiaotong Univ, Dept Mech Engn, Lanzhou 730070, Gansu, Peoples R China
[2] Tokyo Metropolitan Univ, Dept Aerosp Engn, Hino, Tokyo 1910065, Japan
[3] Kyushu Univ, Inst Mat Chem & Engn, Kasuga, Fukuoka 8168580, Japan
来源：
ADVANCES IN MECHANICAL ENGINEERING | 2014年
基金：
中国国家自然科学基金;
关键词：
PARAMAGNETIC FLUID; COMPUTATION; FIELD; GAS; ACCELERATION; DIFFUSION; CYLINDER; FLOW;
D O I：
10.1155/2014/873260
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Numerical computations are carried out for natural convection of air in a two-dimensional square enclosure under a nonuniform magnetic field and together with the gravity field. The nonuniform magnetic field is supplied by a cubic permanent magnet placed above the enclosure. Two kinds of the expressions for the magnetizing force are considered and compared in the numerical computations. The flow and temperature fields, the magnetizing force field and the Nusselt number for two kinds of magnetizing force expressions are all presented in this paper. The numerical results reveal that the natural convection inside the enclosure does not depend on the types of the expressions for magnetizing force.
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页数：11
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