Behavior of Water in the Transition under Magnetizing and Gravitational Forces

• Akamatsu Masato

  Faculty of Systems Science and Technology, Akita Prefectural University, Japan

• Higano Mitsuo

  Faculty of Systems Science and Technology, Akita Prefectural University, Japan

• Takahashi Yoshio

  Faculty of Systems Science and Technology, Akita Prefectural University, Japan

• Ozoe Hiroyuki

  Institute for Materials Chemistry and Engineering, Kyushu University, Japan

抄録

The magnetizing force is a body force. This force is produced under an inhomogeneous magnetic field. Therefore, we numerically simulated how magnetizing force affects the natural convection of water with the diamagnetic property in a vertical cylindrical container heated from below and cooled from above. In the present numerical computations, the vertical magnetic field gradient that was produced by the electric current circulating within the circular electric coil was applied to water in a vertical cylindrical container. Moreover, the circular electric coil was placed either at hot or cold plates to change the gradient of magnetic induction. Transient computation converged under all numerical conditions. When the circular electric coil was placed at the lower end plate heated isothermally, the average Nusselt number decreased with the increases of the magnetic strength so that natural convection was suppressed by the magnetizing force. On the other hand, when the circular electric coil was placed at the upper end plate cooled isothermally, the reverse tendency was computed. Furthermore, to understand the mechanism of the generation of the convection induced by the magnetizing force, the fields of temperature and velocity in the transition to the steady state were visualized under two different initial conditions.

収録刊行物

• アジア・太平洋化学工学会議発表論文要旨集

  アジア・太平洋化学工学会議発表論文要旨集 2004 (0), 1034-1034, 2004

  公益社団法人 化学工学会

キーワード

• magnetizing force
• diamagnetic fluid
• water
• numerical computation

詳細情報

• CRID: 1390001205729839872
• NII論文ID: 130005052111
• DOI: 10.11491/apcche.2004.0.1034.0
• 本文言語コード: en
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可