Abstract
The magnetic field effects on both the static stability limit and the resonance frequency of a magnetic liquid column are examined theoretically and experimentally. We first derived the theoretical resonance frequency of a column using linear potential theory. Then, in the experiment, a vertical cylindrical magnetic liquid column was formed between two electromagnets. As the magnetic field intensity was decreased, the column's diameter exhibited hysteresis, such that its stability limit extended to a smaller diameter range due to the coaxial magnetic field. The column was also subjected to lateral excitation and the surface frequency response of the non-axisymmetric first two modes were observed. It was found that the resonance frequency of the column increases with increasing magnetic field intensity and decreases with an increase in the aspect ratio of the column (mean diameter / height). The resonance frequency of the first mode was in qualitative agreement with the theory.
| Original language | English |
|---|---|
| Title of host publication | American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD |
| Editors | A.S. Lavine, U. Chandra, M.M. Chen, C.T. Crowe, U. Fritsching, al et al |
| Pages | 207-213 |
| Number of pages | 7 |
| Volume | 336 |
| Publication status | Published - 1996 |
| Externally published | Yes |
| Event | Proceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition - Atlanta, GA, USA Duration: 1996 Nov 17 → 1996 Nov 22 |
Other
| Other | Proceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition |
|---|---|
| City | Atlanta, GA, USA |
| Period | 96/11/17 → 96/11/22 |
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ASJC Scopus subject areas
- Fluid Flow and Transfer Processes
- Mechanical Engineering
Cite this
Magnetic field effects on a laterally vibrating magnetic liquid column. / Ohaba, M.; Saito, S.; Sudo, S.; Sawada, Tatsuo; Tanahashi, T.
American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD. ed. / A.S. Lavine; U. Chandra; M.M. Chen; C.T. Crowe; U. Fritsching; al et al. Vol. 336 1996. p. 207-213.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Magnetic field effects on a laterally vibrating magnetic liquid column
AU - Ohaba, M.
AU - Saito, S.
AU - Sudo, S.
AU - Sawada, Tatsuo
AU - Tanahashi, T.
PY - 1996
Y1 - 1996
N2 - The magnetic field effects on both the static stability limit and the resonance frequency of a magnetic liquid column are examined theoretically and experimentally. We first derived the theoretical resonance frequency of a column using linear potential theory. Then, in the experiment, a vertical cylindrical magnetic liquid column was formed between two electromagnets. As the magnetic field intensity was decreased, the column's diameter exhibited hysteresis, such that its stability limit extended to a smaller diameter range due to the coaxial magnetic field. The column was also subjected to lateral excitation and the surface frequency response of the non-axisymmetric first two modes were observed. It was found that the resonance frequency of the column increases with increasing magnetic field intensity and decreases with an increase in the aspect ratio of the column (mean diameter / height). The resonance frequency of the first mode was in qualitative agreement with the theory.
AB - The magnetic field effects on both the static stability limit and the resonance frequency of a magnetic liquid column are examined theoretically and experimentally. We first derived the theoretical resonance frequency of a column using linear potential theory. Then, in the experiment, a vertical cylindrical magnetic liquid column was formed between two electromagnets. As the magnetic field intensity was decreased, the column's diameter exhibited hysteresis, such that its stability limit extended to a smaller diameter range due to the coaxial magnetic field. The column was also subjected to lateral excitation and the surface frequency response of the non-axisymmetric first two modes were observed. It was found that the resonance frequency of the column increases with increasing magnetic field intensity and decreases with an increase in the aspect ratio of the column (mean diameter / height). The resonance frequency of the first mode was in qualitative agreement with the theory.
UR - http://www.scopus.com/inward/record.url?scp=0030386492&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0030386492&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0030386492
VL - 336
SP - 207
EP - 213
BT - American Society of Mechanical Engineers, Heat Transfer Division, (Publication) HTD
A2 - Lavine, A.S.
A2 - Chandra, U.
A2 - Chen, M.M.
A2 - Crowe, C.T.
A2 - Fritsching, U.
A2 - et al, al
ER -