Publikationsrepositorium - Helmholtz-Zentrum Dresden-Rossendorf
1 PublikationNew results on MHD drag coefficients
Gerbeth, G.
Abstract
Theoretical and experimental results of MHD drag coefficients are summarized. Special attention is paid to Stokes flow, where a typical error has been found in the literature. This situation is clarified here, and correct results are presented. Numerical calculations are performed for the MHD Stokes flow around a cylinder in a transverse magnetic field, yielding qualitative agreement for the drag with both measurement as well as a rough asymptotic analysis. The MHD drag coefficient of the cylinder in a transverse magnetic field increases proportionally to M . lnM if M >> 1 (where M is the Hartmann number). Finally, the deflection of a rising bubble in a liquid metal is determined if the direction of the magnetic field is inclined relative to the vertical line.
- Progress in Astronautics and Aeronautics, Ed. H. Branover, Y. Unger, Washington 148 (1993), S. 551 - 565
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