The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Multi-physics Simulation and Measurement for Buoyancy of Nonmagnetic Solid Object Submerged in Magnetic Liquid

자성유체에 잠긴 비자성체 부상현상의 다중물리수치해석 및 실험

  • 최홍순 (경북대 IT대학 전기공학과)
  • Received : 2012.10.17
  • Accepted : 2012.12.18
  • Published : 2013.01.01
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Abstract

In this paper, magnetic buoyancy force on nonmagnetic solid object submerged in magnetic liquid was simulated and measured. For the evaluation of the force, a multi-physics approach of hydrostatic equilibrium considering magnetic body force as well as gravity is presented. The magnetic body force should be regarded as an additional forcing term in the momentum equation of hydrodynamics. It is also shown that the virtual air-gap based Kelvin's force formula is a useful method for the calculation of force distribution in the magnetic liquid. The experimental result which was performed by a load-cell measurement system agreed quantitatively well with the numerical one.

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References

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