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 journalArticlepeer-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 languageEnglish
Article number25
Pages (from-to)127-130
Number of pages4
JournalPlasma Science and Technology
Volume11
Issue number1
DOIs
Publication statusPublished - 2009 May 6

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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