Review on the stability of conducting fluid flow under magnetic field

doi:10.16085/j.issn.1000-6613.2017-0398

Abstract

Abstract: The stability of conducting fluid flow is vital to the electromagnetic processing of materials and the design and operating of thermonuclear fusion reactorcooling system.In this paper,the analysis methods for flow stability based on normal modes and non-normal modes are introduced and compared.Different critical parameters threshold are often obtained with these two methods, this is mainly due to different growth mode of perturbations is concerned in each method.The recent experimental and computational results obtained for flows in pipes, ducts and channels in the presence of magnetic field are reviewed, especially the effects of magnetic field and conductivity of the walls are elaborated.The further investigations on the related experiments, stability analysis methods and the transition mechanisms are discussed.

Key words: magnetic field, conducting fluid, stability, normal mode, non-normal mode

摘要： 磁场作用下导电流体的流动稳定性研究在电磁材料制备过程以及核聚变反应堆冷却系统的设计与制造有重要意义。文中简述了流动稳定性研究的主要方法，分析了正则模态和非正则模态两种方法的利弊，因两类方法所考察的扰动的增长形式不同，其结论往往不一致；对近十几年磁场作用下导电流体在不同形状管道内的流动稳定性研究进展进行了分类和概述，主要介绍了磁场方向、壁面导电率对流动稳定性的影响；针对相关实验的开展、稳定性分析方法以及对转捩机理的研究等提出了可能值得深入研究的方向。

关键词: 磁场, 导电流体, 流动稳定性, 正则模态, 非正则模态

CLC Number:

O361.5

DONG Shuai, LI Shuang, LIU Lishuai, YE Xuemin. Review on the stability of conducting fluid flow under magnetic field[J]. Chemical Industry and Engineering Progress, 2017, 36(S1): 17-26.

董帅, 李爽, 刘立帅, 叶学民. 磁场作用下导电流体的流动稳定性研究进展[J]. 化工进展, 2017, 36(S1): 17-26.

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