Stability of ellipsoidal conductors in microgravity electromagnetic containerless processing facilities

Author

Saleh, Abdala Mohamed ; Clemente, Roberto Antonio

Author_Institution

Dept. of Math. & Stat., State Univ. of Ponta Grossa, Parana, Brazil

Volume

38

Issue

5

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

3454

Lastpage

3457

Abstract

We calculate forces and torques arising on ellipsoidal conductors placed in electromagnetic containerless processing facilities in an ambient of microgravity assuming small displacements from equilibrium. We show that oblate conductors could be unstable to flipping motion when oscillating longitudinal (or heating) magnetic fields are used, while prolate ones are unstable when their elongation is below 2 if only positioning coils are employed

Keywords

coils; conducting bodies; electromagnetic forces; magnetic levitation; torque; zero gravity experiments; ellipsoidal conductor stability; elongation; flipping motion; forces; magnetic levitation; microgravity electromagnetic containerless processing facilities; oblate conductors; oscillating longitudinal magnetic fields; positioning coils; prolate conductors; small displacements; torques; Coils; Conductors; Electromagnetic forces; Frequency; Heating; Magnetic fields; Magnetic levitation; Stability; Surface tension; Torque;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2002.802948

Filename

1041962