REYNOLDS STRESS OF LOCALIZED TOROIDAL MODES

Citation
Yz. Zhang et Sm. Mahajan, REYNOLDS STRESS OF LOCALIZED TOROIDAL MODES, Physics of plasmas, 2(11), 1995, pp. 4236-4245
Citations number
17
Categorie Soggetti
Phsycs, Fluid & Plasmas
Journal title
ISSN journal
1070664X
Volume
2
Issue
11
Year of publication
1995
Pages
4236 - 4245
Database
ISI
SICI code
1070-664X(1995)2:11<4236:RSOLTM>2.0.ZU;2-N
Abstract
An investigation of the two-dimensional (2-D) toroidal eigenmode probl em reveals the possibility of a new consistent 2-D structure, the diss ipative ballooning mode of the second kind (BM-II). In contrast to the conventional ballooning mode, the new mode is poloidally localized at pi/2 (or-pi/2), and possesses significant radial asymmetry. The radia l asymmetry in turn, allows the dissipative BM-II to generate consider ably larger Reynolds stress as compared to the standard slab drift-typ e modes. It is also shown that a wide class of localized dissipative t oroidal modes are likely to be of the dissipative BM-II nature, sugges ting that at the tokamak edge, the fluctuation generated Reynolds stre ss (a possible source of poloidal flow) can be significant. (C) 1995 A merican Institute of Physics.