Shape oscillations of magnetic liquid columns subject to vertical vibrations

M. Ohaba, T. Sugimoto, T. Sawada, T. Tanahashi, S. Sudo

Research output: Chapter in Book/Report/Conference proceedingChapter


Shape oscillations of magnetic liquid columns subject to vertical vibration in a uniform magnetic field are examined in the presence of gravity. A magnetic liquid column is formed vertically against gravity in an axial magnetic field produced by Helmholtz coils and then vibrated to produce axisymmetric oscillations. A high-speed video camera is used to observe the column's dynamic shape and two high-resolution laser displacement detectors measure the amplitudes of both the exciter table and the column interface. The experimental interfacial amplitude shows good agreement with our theoretical predictions. Two new wave motions are observed: a progressive wave near the resonance range of the fundamental mode (0,1), and a mode (4,1) azimuthal one-half subharmonic oscillation beyond the mode (0,1) frequency. These are the first observations of such wave motions in a terrestrial experiment and may suggest similar liquid column oscillations in a microgravity environment.

Original languageEnglish
Title of host publicationProceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM)
PublisherAmerican Society of Mechanical Engineers
Number of pages1
ISBN (Print)0791819612
Publication statusPublished - 1999
Externally publishedYes

ASJC Scopus subject areas

  • General Earth and Planetary Sciences
  • General Engineering
  • General Environmental Science


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