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KIAM Preprint  22, Moscow, 2022
Authors: Gavrikov M.B., Tayurskiy A.A.
Boundary value problem for plane nonlinear solitary waves in Hall MHD
Abstract:
The equations for plane nonlinear traveling waves in the Hall MHD are derived. The first integral of the energy of the equations of traveling waves is obtained and their Hamiltonian property in Lagrangian coordinates is proved. A classification of singular points of the equations of traveling waves is carried out. For an isothermal plasma resting at infinity, the boundary problem of finding plane solitary waves whose parameters have given values at infinity and propagating through space with a given phase velocity is also posed. The ranges of change in the phase velocity are analytically found for which the boundary value problem is solvable. It is shown that there are two families of solutions to the boundary value problem, which differ in the magnitude of the phase velocity fast waves, the phase velocity of which is greater than the sonic one, and slow waves with a phase velocity less than the sonic one. The solitary waves found were verified by substituting them into the Hall MHD equations.
Keywords:
Hall MHD, traveling wave, solitary wave (soliton), phase velocity, boundary value problem
Publication language: russian,  pages: 31
Research direction:
Mathematical modelling in actual problems of science and technics
Russian source text:
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About authors:
  • Gavrikov Mikhail Borisovich,  orcid.org/0000-0001-7165-8318KIAM RAS
  • Tayurskiy Aleksei Aleksandrovich,  orcid.org/0000-0001-6027-5119KIAM RAS