TY - JOUR

T1 - Theoretical analysis of annular laminar flows with MHD interaction driven by rotating co-axial cylinder

AU - Sasaki, Ryo

AU - Fujino, Takayasu

AU - Takana, Hidemasa

AU - Kobayashi, Hiromichi

N1 - Publisher Copyright:
© 2021 The Institute of Electrical Engineers of Japan.

PY - 2021/3/1

Y1 - 2021/3/1

N2 - 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.

AB - 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.

KW - Annular rotating flow

KW - MHD interaction

KW - Theoretical analysis

KW - Torque control

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U2 - 10.1541/ieejpes.141.280

DO - 10.1541/ieejpes.141.280

M3 - Article

AN - SCOPUS:85101756569

SN - 0385-4213

VL - 141

SP - 280

EP - 286

JO - IEEJ Transactions on Power and Energy

JF - IEEJ Transactions on Power and Energy

IS - 3

ER -