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- W2037619353 abstract "A new frozen-in field w (generalizing vorticity) is constructed for ideal magnetohydrodynamic flow. In conjunction with the frozen-in magnetic field h , this is used to obtain a generalized Weber transformation of the MHD equations, expressing the velocity as a bilinear form in generalized Weber variables. This expression is also obtained from Hamilton's principle of least action, and the canonically conjugate Hamiltonian variables for MHD flow are identified. Two alternative energy-type variational principles for three-dimensional steady MHD flow are established. Both involve a functional R which is the sum of the total energy and another conserved functional, the volume integral of a function Φ of Lagrangian coordinates. It is shown that the first variation δ 1 R vanishes if Φ is suitably chosen (as minus a generalized Bernoulli integral). Expressions for the second variation δ 2 R are presented." @default.
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- W2037619353 date "1995-01-25" @default.
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- W2037619353 title "On general transformations and variational principles for the magnetohydrodynamics of ideal fluids. Part 1. Fundamental principles" @default.
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- W2037619353 doi "https://doi.org/10.1017/s0022112095002254" @default.
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