LHD Plasma Simulation
Nonlinear Evolution of MHD Pressuredriven Instability in LHD
Influences of the pressuredriven instability on plasma confinement in
LHD is studied by means of the direct numerical simulation of the compressible,
nonlinear and fully threedimensional MHD equations. Green surface represents
the isosurface of the pressure. The pressure contours are shown on a poloidal
crosssection. The thin lines represent the stream lines. The vortical
motions associated with the pressuredriven instability deform the pressure
and form the mushroomlike structures of the pressure. Since the streamlines
are inclined into the toroidal direction, the toroidal flow is excited
as strong as the poloidal (vortical) motions.
.
Reference
H. Miura, N.
Nakajima, T. Hayashi and M. Okamoto, AIP Conference Proceedings Vol.871 (2006)
pp 157168
H. Miura, N. Nakajima, T. Hayashi and M. Okamoto, J. Plasma
Physics Vol. 72 (2006) pp. 10951099
H. Miura, N. Nakajima, T. Hayashi
and M. Okamoto, Fusion Science and Technology Vol. 51 (2007) pp.819
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