Title :
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
fDate :
9/1/2002 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802948
