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Author(s):
Y. Kondoh
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Title:
Thought Analysis on Relaxation and General Principle to Find Relaxed State
Date of publication:
Sep. 1991
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Key words:
thought analysis, MHD relaxation, energy minimum, minimum decay phase, relaxed state, dynamical systems, force-free fields, helicity, quasi-steady, minimum entropy production
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Abstract:
A thought analysis on relaxation is presented to lead to a general principle applicable to all dynamical systems to find the relaxed state. The general principle is applied to the energy relaxation of the MHD plasma to lead to the relaxed state of Delta x B = lambda B and the mode transition condition without using the concept of helicity. The present theory permits the quasi-steady energy flow through the boundary surface and leads to a more general relaxed state for plasmas having spatial dependent resistivity, that connects directly to the experimental fact of j = 0 near the wall.
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