A three-function variational principle for stationary nonbarotropic magnetohydrodynamics

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The current paper is devoted to the introduction of simpler Eulerian variational principles from which all the relevant equations of nonbarotropic stationary magnetohydrodynamics can be derived for magnetic fields that lie on surfaces. A variational principle is given in terms of three independent variables for stationary nonbarotropic magnetohydrodynamic flows. This is a smaller number of variables than the eight variables that appear in the standard equations of nonbarotropic magnetohydrodynamics, which are the magnetic field, the velocity field, the specific entropy, and the density. We further investigate the case in which the flow along magnetic lines is not ideal.

Original languageEnglish
Article number1632
Issue number9
StatePublished - Sep 2021


  • Magnetohydrodynamics
  • Reduction of variables
  • Variational principles


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