How is turbulence intensity determined by macroscopic variables in a toroidal plasma?

被引：58

作者：

Inagaki, S. ^{[1
,2
]}

Tokuzawa, T. ^{[3
]}

Tamura, N. ^{[3
]}

Itoh, S. -I. ^{[1
,2
]}

Kobayashi, T. ^{[4
]}

Ida, K. ^{[2
,3
]}

Shimozuma, T. ^{[3
]}

Kubo, S. ^{[3
]}

Tanaka, K. ^{[3
]}

Ido, T. ^{[3
]}

Shimizu, A. ^{[3
]}

Tsuchiya, H. ^{[3
]}

Kasuya, N. ^{[1
,2
]}

Nagayama, Y. ^{[3
]}

Kawahata, K. ^{[3
]}

Sudo, S. ^{[3
]}

Yamada, H. ^{[3
]}

Fujisawa, A. ^{[1
,2
]}

Itoh, K. ^{[2
,3
]}

机构：

[1] Kyushu Univ, Appl Mech Res Inst, Kasuga, Fukuoka 8168580, Japan

[2] Kyushu Univ, Itoh Res Ctr Plasma Turbulence, Kasuga, Fukuoka 8168580, Japan

[3] Natl Inst Nat Sci, Natl Inst Fus Sci, Toki, Gifu 5095292, Japan

[4] Kyushu Univ, Interdisciplinary Grad Sch Engn Sci, Kasuga, Fukuoka 8168580, Japan

来源：

NUCLEAR FUSION | 2013年 / 53卷 / 11期

关键词：

ELECTRON HEAT-TRANSPORT; LARGE HELICAL DEVICE; ENERGY-TRANSPORT; TOKAMAK PLASMAS; ECE DIAGNOSTICS; ZONAL FLOWS; LHD; CONFINEMENT; W7-AS;

D O I：

10.1088/0029-5515/53/11/113006

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We report observations of the dynamic response of micro-fluctuations and turbulent flux to a low-frequency heating power modulation in the Large Helical Device. The responses of heat flux and micro-fluctuation intensity differ from that of the change in temperature gradient. This result violates the local transport model, where turbulence is determined by the local temperature gradient. A new relationship between flux, gradient and turbulence is found. In addition to the temperature gradient, the heating rate is proposed as a new, direct controlling parameter of turbulence to explain the fast response of turbulence against periodic modulation of heating power.

引用

页数：9

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