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The dynamic behavior of magnetic fluid adsorbed to small permanent magnet in alternating magnetic field |
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| Authors: | Seiichi Sudo Daisaku AsanoHidemasa Takana Hideya Nishiyama |
| Affiliation: | a Faculty of Systems Science and Technology, Akita Prefectural University, Ebinokuchi 84-4, Yurihonjo 015-0055, Japan b Institute of Fluid Science, Tohoku University, Katahira 2-1-1, Aobaku, Sendai 980-8577, Japan |
| Abstract: | The dynamic behavior of a magnetic fluid adsorbed to a small NdFeB permanent magnet subjected to an alternating magnetic field was studied with a high speed video camera system. The directions of alternating magnetic field are parallel and opposite to that of the permanent magnet. It was found that the surface of magnetic fluid responds to the external alternating magnetic field in elongation and contraction with a lot of spikes. Generation of a capillary magnetic fluid jet was observed in the neighbourhood of a specific frequency of alternating field. The effect of gravitational force on surface phenomena of magnetic fluid adsorbed to the permanent magnet was revealed. |
| Keywords: | Magnetic fluid Surface phenomenon Frequency response Capillary jet Magnetic fluid droplet |
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