Theoretical analysis of annular laminar flows with MHD interaction driven by rotating co-axial cylinder

Ryo Sasaki, Takayasu Fujino, Hidemasa Takana, Hiromichi Kobayashi

Research output: Contribution to journalArticlepeer-review

Abstract

Theoretical solution is derived for annular laminar flows with MHD interaction driven by a rotating co-axial cylinder. The effects on the flow field and rotational torque are clarified by changing the radius ratio and the strength of MHD interaction. As increasing the radius ratio, azimuthal flow velocity increases and approaches the plane Couette flow profile for weak MHD interaction. The azimuthal flow velocity, however, decreases as increasing MHD interaction, and the reverse flow emerges in large radial locations. As increasing the MHD interaction, the rotational torque increases. A larger radius ratio leads to the larger sensitivity of the change in rotational torque.

Original languageEnglish
Pages (from-to)280-286
Number of pages7
JournalIEEJ Transactions on Power and Energy
Volume141
Issue number3
DOIs
Publication statusPublished - 2021 Mar 1

Keywords

  • Annular rotating flow
  • MHD interaction
  • Theoretical analysis
  • Torque control

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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