Entrance Flows of Magnetic Fluids in a Circular Pipe

Tsuyoshi Mihayashi, Kazuyuki Shizawa, Takahiko Tanahashi, Harukazu Shimizu

Research output: Contribution to journalArticlepeer-review


In the present paper, two kinds of entrance flows of magnetic fluids are analized by the finite difference method on the basis of the basic equations for magnetic fluids with internal rotation proposed by the authors. The values of magnetization are obtained not by the relaxation equation but by the constitutive equation of magnetization. Numerical solutions are obtained for parabolic and uniform profiles of axial velocity at the pipe inlet. The effects of some dimensionless parameters characterizing the magnetic fluid flow are discussed in detail. The results of this study seem to contribute to the miniaturization of magnetic fluid transmission lines by means of applied magnetic fields.

Original languageEnglish
Pages (from-to)2027-2036
Number of pages10
JournalTransactions of the Japan Society of Mechanical Engineers Series B
Issue number491
Publication statusPublished - 1987
Externally publishedYes


  • Entrance Flow
  • Finite Difference Method
  • Internal Rotation
  • Magnetic Fluid
  • Order Estimation

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering


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