TY - JOUR
T1 - MHD interaction dynamics of shear flow and islands
AU - Yagi, M.
AU - Itoh, S. I.
AU - Itoh, K.
AU - Fukuyama, A.
PY - 2000/1/1
Y1 - 2000/1/1
N2 - A type of large eddy simulation model is proposed which consists of three hierarchies, i.e. transport, magnetohydrodynamics (MHD) and turbulence. These classes are categorized by the poloidal and toroidal mode number (m, n). A (0, 0) mode represents transport, low (m, n) modes represent MHD and high (m, n) modes represent turbulence. Mutual interactions between three classes are possible via nonlinearities such as Reynolds stress, renormalized eddy viscosity and so on. As a starting point, a two-hierarchical model of MHD and turbulence is derived and applied for the analysis of magnetic island dynamics in the presence of a strong pressure gradient. It is found that the growth of the magnetic island is accelerated by the anomalous resistivity, whereas it causes the rotation of the magnetic island to decelerate.
AB - A type of large eddy simulation model is proposed which consists of three hierarchies, i.e. transport, magnetohydrodynamics (MHD) and turbulence. These classes are categorized by the poloidal and toroidal mode number (m, n). A (0, 0) mode represents transport, low (m, n) modes represent MHD and high (m, n) modes represent turbulence. Mutual interactions between three classes are possible via nonlinearities such as Reynolds stress, renormalized eddy viscosity and so on. As a starting point, a two-hierarchical model of MHD and turbulence is derived and applied for the analysis of magnetic island dynamics in the presence of a strong pressure gradient. It is found that the growth of the magnetic island is accelerated by the anomalous resistivity, whereas it causes the rotation of the magnetic island to decelerate.
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U2 - 10.1088/0741-3335/42/5A/313
DO - 10.1088/0741-3335/42/5A/313
M3 - Article
AN - SCOPUS:0000252681
VL - 42
SP - A133-A138
JO - Plasma Physics and Controlled Fusion
JF - Plasma Physics and Controlled Fusion
SN - 0741-3335
IS - SUPPL. 5A
ER -