Momentum transport in DIII-D discharges with and without magnetohydrodynamics (MHD) activity

Ren Qilong; M. S. Chu; L. L. Lao; H. St John; R. Lahaye; Y. M. Jeon; Zhang Cheng; Zhou Deng; Li Guoqiang; J. M. Park; J. S. Degrassie

doi:10.1088/1009-0630/11/1/25

Momentum transport in DIII-D discharges with and without magnetohydrodynamics (MHD) activity

Ren Qilong
, M. S. Chu
, L. L. Lao
, H. St John
, R. Lahaye
, Y. M. Jeon
, Zhang Cheng
, Zhou Deng
, Li Guoqiang
, J. M. Park
, J. S. Degrassie

Research output: Contribution to journal › Article › peer-review

Abstract

Two phases of a DIII-D discharge with and without magnetohydrodynamics (MHD) activity are analysed using ONETWO code. The toroidal momentum flux is extracted from experimental data and compared with the predictions by neoclassical theory, Gyro-Landau fluid transport model (GLF23) and Multi-Mode model (MMM95). It is found that without MHD activities GLF23 and MMM95 provide a reasonable description while with MHD activity no model alone can fully describe the experimental momentum flux. For the phase with MHD activity a simple model of resonant magnetic drag is tested and it cannot fully explain the plasma slowing down observed in experiment.

Original language	English
Article number	25
Pages (from-to)	127-130
Number of pages	4
Journal	Plasma Science and Technology
Volume	11
Issue number	1
DOIs	https://doi.org/10.1088/1009-0630/11/1/25
State	Published - 2009

Keywords

MHD activity
Magnetic drag
Toroidal rotation

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10.1088/1009-0630/11/1/25

Cite this

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title = "Momentum transport in DIII-D discharges with and without magnetohydrodynamics (MHD) activity",

abstract = "Two phases of a DIII-D discharge with and without magnetohydrodynamics (MHD) activity are analysed using ONETWO code. The toroidal momentum flux is extracted from experimental data and compared with the predictions by neoclassical theory, Gyro-Landau fluid transport model (GLF23) and Multi-Mode model (MMM95). It is found that without MHD activities GLF23 and MMM95 provide a reasonable description while with MHD activity no model alone can fully describe the experimental momentum flux. For the phase with MHD activity a simple model of resonant magnetic drag is tested and it cannot fully explain the plasma slowing down observed in experiment.",

keywords = "MHD activity, Magnetic drag, Toroidal rotation",

author = "Ren Qilong and Chu, \{M. S.\} and Lao, \{L. L.\} and John, \{H. St\} and R. Lahaye and Jeon, \{Y. M.\} and Zhang Cheng and Zhou Deng and Li Guoqiang and Park, \{J. M.\} and Degrassie, \{J. S.\}",

year = "2009",

doi = "10.1088/1009-0630/11/1/25",

language = "English",

volume = "11",

pages = "127--130",

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TY - JOUR

T1 - Momentum transport in DIII-D discharges with and without magnetohydrodynamics (MHD) activity

AU - Qilong, Ren

AU - Chu, M. S.

AU - Lao, L. L.

AU - John, H. St

AU - Lahaye, R.

AU - Jeon, Y. M.

AU - Cheng, Zhang

AU - Deng, Zhou

AU - Guoqiang, Li

AU - Park, J. M.

AU - Degrassie, J. S.

PY - 2009

Y1 - 2009

N2 - Two phases of a DIII-D discharge with and without magnetohydrodynamics (MHD) activity are analysed using ONETWO code. The toroidal momentum flux is extracted from experimental data and compared with the predictions by neoclassical theory, Gyro-Landau fluid transport model (GLF23) and Multi-Mode model (MMM95). It is found that without MHD activities GLF23 and MMM95 provide a reasonable description while with MHD activity no model alone can fully describe the experimental momentum flux. For the phase with MHD activity a simple model of resonant magnetic drag is tested and it cannot fully explain the plasma slowing down observed in experiment.

AB - Two phases of a DIII-D discharge with and without magnetohydrodynamics (MHD) activity are analysed using ONETWO code. The toroidal momentum flux is extracted from experimental data and compared with the predictions by neoclassical theory, Gyro-Landau fluid transport model (GLF23) and Multi-Mode model (MMM95). It is found that without MHD activities GLF23 and MMM95 provide a reasonable description while with MHD activity no model alone can fully describe the experimental momentum flux. For the phase with MHD activity a simple model of resonant magnetic drag is tested and it cannot fully explain the plasma slowing down observed in experiment.

KW - MHD activity

KW - Magnetic drag

KW - Toroidal rotation

UR - https://www.scopus.com/pages/publications/65449135992

U2 - 10.1088/1009-0630/11/1/25

DO - 10.1088/1009-0630/11/1/25

M3 - Article

AN - SCOPUS:65449135992

SN - 1009-0630

VL - 11

SP - 127

EP - 130

JO - Plasma Science and Technology

JF - Plasma Science and Technology

IS - 1

M1 - 25

ER -

Momentum transport in DIII-D discharges with and without magnetohydrodynamics (MHD) activity

Abstract

Keywords

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