Magnetorotational Instability in a Rotating Liquid Metal Annulus

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Description

Although the magnetorotational instability (MRI) has been widely accepted as a powerful accretion mechanism in magnetized accretion disks, it has not been realized in the laboratory. The possibility of studying MRI in a rotating liquid-metal annulus (Couette flow) is explored by local and global stability analysis and magnetohydrodynamic (MHD) simulations. Stability diagrams are drawn in dimensionless parameters, and also in terms of the angular velocities at the inner and outer cylinders. It is shown that MRI can be triggered in a moderately rapidly rotating table-top apparatus, using easy-to-handle metals such as gallium. Practical issues of this proposed experiment are discussed.

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472 Kilobytes pages

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Ji, Hantao; Goodman, Jeremy & Kageyama, Akira March 10, 2001.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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Description

Although the magnetorotational instability (MRI) has been widely accepted as a powerful accretion mechanism in magnetized accretion disks, it has not been realized in the laboratory. The possibility of studying MRI in a rotating liquid-metal annulus (Couette flow) is explored by local and global stability analysis and magnetohydrodynamic (MHD) simulations. Stability diagrams are drawn in dimensionless parameters, and also in terms of the angular velocities at the inner and outer cylinders. It is shown that MRI can be triggered in a moderately rapidly rotating table-top apparatus, using easy-to-handle metals such as gallium. Practical issues of this proposed experiment are discussed.

Physical Description

472 Kilobytes pages

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INIS; OSTI as DE00780617

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  • Other Information: PBD: 10 Mar 2001

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  • Report No.: PPPL-3548
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/780617 | External Link
  • Office of Scientific & Technical Information Report Number: 780617
  • Archival Resource Key: ark:/67531/metadc725561

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  • March 10, 2001

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • April 18, 2016, 1 p.m.

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Ji, Hantao; Goodman, Jeremy & Kageyama, Akira. Magnetorotational Instability in a Rotating Liquid Metal Annulus, report, March 10, 2001; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc725561/: accessed September 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.