Relaxation toward states of minimum energy in a compact torus
作者:
S. Riyopoulos,
A. Bondeson,
D. Montgomery,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1982)
卷期:
Volume 25,
issue 1
页码: 107-115
ISSN:0031-9171
年代: 1982
DOI:10.1063/1.863609
出版商: AIP
数据来源: AIP
摘要:
A finite‐difference, resistive, magnetohydrodynamic code is used to follow the long‐time evolution of decaying nonequilibrium states inside a rigid, perfectly conducting cylindrical boundary. The energy‐to‐magnetic helicity ratio decays toward a minimum, in accord with a conjecture of Taylor. The magnetic Reynolds number is considerably higher than the mechanical Reynolds number for the regime considered. The energy, which is mostly magnetic, tends to decay in bursts associated with current filamentation and magnetic reconnection.
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