Axisymmetric interfacial oscillations of a magnetic liquid column

Motoyoshi Ohaba, Tatsuo Sawada, Shin Hachiro Saito, Seiichi Sudo, Takahiko Tanahashi

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This paper presents the stability and dynamic characteristics of an axisymmetrically oscillating magnetic liquid column subjected to a uniform magnetic field in the presence of gravity. Initially, the axisymmetric mode response of a magnetic liquid column is analyzed using potential theory based on a magnetic field perturbation method. Then, an experiment is described in which a liquid column is formed between Helmholtz coils and vibrated vertically to produce axisymmetric oscillations by an electrodynamic exciter. The surface frequency response of the column is measured optically using a high-speed video camera, a strobovision-analyzer and a stroboscope. The results show that the magnetic field exerts a stabilizing effect on the column and the resonance frequency increases for increased liquid column aspect ratio (diameter/height). Both the experimental interfacial response and resonance frequency show good agreement with the theoretical prediction.

Original languageEnglish
Pages (from-to)511-517
Number of pages7
JournalJSME International Journal, Series B: Fluids and Thermal Engineering
Issue number2
Publication statusPublished - 1998 May

ASJC Scopus subject areas

  • Mechanical Engineering
  • Physical and Theoretical Chemistry
  • Fluid Flow and Transfer Processes


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