Theoretical analysis of annular laminar flows with MHD interaction driven by rotating co‐axial cylinder. Issue 2 (22nd April 2021)

• Record Type: Journal Article
• Authors: Sasaki, Ryo; Fujino, Takayasu; Takana, Hidemasa; Kobayashi, Hiromichi
• Is Part Of: Electronics and communications in Japan. Volume 104:Issue 2(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-04-22
• Subjects: annular rotating flow -- MHD interaction -- theoretical analysis -- torque control; Electronics -- Periodicals; Telecommunication -- Periodicals; 621.6805
• DOI: 10.1002/ecj.12311
• Languages: English
• ISSNs: 1942-9533

Abstract

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 the radius ratio increases, azimuthal flow velocity increases and approaches the plane Couette flow profile for weak MHD interaction. The azimuthal flow velocity, however, decreases as the MHD interaction increases, and the reverse flow emerges in large radial locations. As the MHD interaction increases, the rotational torque increases. A larger radius ratio leads to the larger sensitivity of the change in rotational torque.