NONLINEAR INTERCHANGE MODE IN EDGE PLASMA WITH POLOIDAL SHEAR-FLOW

被引：16

作者：

TAKAYAMA, A

WAKATANI, M

SUGAMA, H

机构：

[1] KYOTO UNIV, PLASMA PHYS LAB, UJI 611, JAPAN

[2] NATL INST FUS SCI, CHIKUSA KU, NAGOYA, AICHI 46401, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1995年 / 64卷 / 03期

关键词：

INTERCHANGE MODE; POLOIDAL SHEAR FLOW; EDGE LOCALIZED MODE; EDGE PLASMA; NONLINEAR MHD MODEL;

D O I：

10.1143/JPSJ.64.791

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Nonlinear evolution of two dimensional pressure-driven interchange mode produces relaxation oscillations in the presence of poloidal shear flow for Rayleigh number Ra similar to 10(4). Here the flow velocity has a symmetric profile with respect to the center of slab plasma where the velocity shear disappears. There is a tendency that the velocity shear becomes weak after the saturation. When the velocity shear almost disappears, fluctuations grow rapidly. Then the velocity shear is again generated to suppress the growth of fluctuations. This kind of relaxation oscillation may be related to ELM [Edge Localized Mode] in the H-mode of tokamak.

引用

页码：791 / 799

页数：9

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