界面に平行な非一様交流磁場下における磁性流体界面の安定限界

概要

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Stability of the surface of a magnetic fluid under a horizontal non-uniform alternating magnetic field is investigated experimentally and analytically. Several modes of interfacial waves of the same frequency as that of the applied magnetic field are observed, and the critical strength of the magnetic field at each frequency were obtained. The linear stability theory shows that the system is destabilized with the increase in the magnetic susceptibility and the gradient of the magnetic field, which is in accord with the experimental result. The iron nitride magnetic fluid, which is newly developed and has very high susceptibility and magnetization, was tested under the same condition as W-35 and HC-50. The small disturbance occurred even at very weak magnetic field, and the steady wave was formed in the uniform magnetic field.
社団法人日本機械学会の論文
2000-02-25