Axisymmetric interfacial oscillations of a magnetic liquid column

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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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
Volume41
Issue number2
Publication statusPublished - 1998 May

Fingerprint

oscillations
Liquids
Magnetic fields
liquids
Stroboscopes
High speed cameras
Electrodynamics
Video cameras
stroboscopes
magnetic fields
Frequency response
Aspect ratio
potential theory
Gravitation
electrodynamics
dynamic characteristics
frequency response
aspect ratio
analyzers
coils

ASJC Scopus subject areas

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

Cite this

Axisymmetric interfacial oscillations of a magnetic liquid column. / Ohaba, Motoyoshi; Sawada, Tatsuo; Saito, Shin Hachiro; Sudo, Seiichi; Tanahashi, Takahiko.

In: JSME International Journal, Series B: Fluids and Thermal Engineering, Vol. 41, No. 2, 05.1998, p. 511-517.

Research output: Contribution to journalArticle

Ohaba, Motoyoshi ; Sawada, Tatsuo ; Saito, Shin Hachiro ; Sudo, Seiichi ; Tanahashi, Takahiko. / Axisymmetric interfacial oscillations of a magnetic liquid column. In: JSME International Journal, Series B: Fluids and Thermal Engineering. 1998 ; Vol. 41, No. 2. pp. 511-517.
@article{7e98df067b9142cb894c122071f6501b,
title = "Axisymmetric interfacial oscillations of a magnetic liquid column",
abstract = "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.",
author = "Motoyoshi Ohaba and Tatsuo Sawada and Saito, {Shin Hachiro} and Seiichi Sudo and Takahiko Tanahashi",
year = "1998",
month = "5",
language = "English",
volume = "41",
pages = "511--517",
journal = "JSME International Journal, Series B: Fluids and Thermal Engineering",
issn = "1340-8054",
publisher = "Japan Society of Mechanical Engineers",
number = "2",

}

TY - JOUR

T1 - Axisymmetric interfacial oscillations of a magnetic liquid column

AU - Ohaba, Motoyoshi

AU - Sawada, Tatsuo

AU - Saito, Shin Hachiro

AU - Sudo, Seiichi

AU - Tanahashi, Takahiko

PY - 1998/5

Y1 - 1998/5

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0032075842&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032075842&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0032075842

VL - 41

SP - 511

EP - 517

JO - JSME International Journal, Series B: Fluids and Thermal Engineering

JF - JSME International Journal, Series B: Fluids and Thermal Engineering

SN - 1340-8054

IS - 2

ER -