The requirements of passive levitation for nonmagnetic body in magnetic fluid

자성유체 내에서 비자성체의 수동적 부양 조건

  • 전상현 (부산대학교 지능기계공학과) ;
  • 남윤주 (부산대학교 대학원 지능기계공학과) ;
  • 박명관 (부산대학교 기계공학부 및 기계기술연구소)
  • Published : 2007.05.30

Abstract

In this paper, the requirements of passive levitation for nonmagnetic body in magnetic fluid are investigated. The passive levitation system includes the electromagnetic system composed of two hollow solenoids, the magnetic fluid and the nonmagnetic body made of aluminum. The hollow solenoids generate nonuniform magnetic fields, leading to the gradient of the magnetic field in magnetic fluid. Hence, the resultant magnetic body force in magnetic fluid is used to levitate the nonmagnetic body in the opposite direction of the gravitation. The levitation conditions according to applied current and the mass of the nonmagnetic body are obtained analytically.