THE DYNAMIC BEHAVIOUR OF MAGNET-MAGNETIC FLUID SYSTEMS IN ALTERNATING MAGNETIC FIELDS

被引：0
作者：
Sudo, S. [1 ]
Shinozaki, M. [1 ]
Nishiyama, H. [2 ]
机构：
[1] Akita Prefectural Univ, Fac Syst Sci & Technol, Tsuchiya, Yurihonjo 0150055, Japan
[2] Tohoku Univ, Inst Fluid Sci, Sendai, Miyagi 9808577, Japan
来源：
MAGNETOHYDRODYNAMICS | 2013年 / 49卷 / 3-4期
关键词：
D O I：
10.22364/mhd.49.3-4.17
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
This paper is concerned with the surface phenomena of magnetic fluid adsorbed on a small NdFeB permanent magnet subject to alternating magnetic fields. The dynamic behaviour of some magnet-magnetic fluid systems in alternating magnetic fields is studied with a digital high-speed video camera system. Magnetic fluid surface waves are observed in a wider range of input frequency from 10 Hz to 200 Hz. The frequency of magnetic fluid surface motion for most forms of external alternating field usually corresponds to the input frequency. Large-amplitude surface waves and drop ejection from a magnetic fluid surface occur in some systems at the natural frequency of the system.
引用
收藏
页码：344 / 349
页数：6
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