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Onset of rotating stall in induction magnetohydrodynamic flows

  • Gas Discharges, Plasmas
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Abstract

The possible onset of unsteady induction magnetohydrodynamic (MHD) flows in wide channels or in channels of annular cross section is discovered on the basis of a proposed two-dimensional mathematical model. Such secondary flows have the character of rotating stall, which was previously known in high-pressure axial compressors. The existing experimental data confirm the possibility of observing this phenomenon, which can be interpreted as a new type of symmetry loss. It is shown for certain relations between the parameters that the system has a lower margin of stability against disturbances of the rotating-stall type than against steady-state disturbances. In particular, a loss of stability of a steady uniform flow can occur on the descending portion of the external characteristic of the machine.

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Authors and Affiliations

  1. A. F. Ioffe Physicotechnical Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia

    Yu. A. Polovko, E. P. Romanova & É. A. Tropp

Authors
  1. Yu. A. Polovko
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  2. E. P. Romanova
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  3. É. A. Tropp
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Zh. Tekh. Fiz. 68, 65–70 (June 1998)

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Polovko, Y.A., Romanova, E.P. & Tropp, É.A. Onset of rotating stall in induction magnetohydrodynamic flows. Tech. Phys. 43, 673–677 (1998). https://doi.org/10.1134/1.1259052

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  • DOI: https://doi.org/10.1134/1.1259052

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