Zonal Flow Dynamics and Size-scaling of Anomalous Transport

Chen, Liu ; White, Roscoe B. ; Zonca, F.

Princeton University. Plasma Physics Laboratory.

关键词: Drift Waves;    Space-Time;    Amplitudes;    Fluctuations Drift Waves;    70 Plasma Physics And Fusion Technology;   

DOI  :  10.2172/814729
RP-ID  :  PPPL-3847
RP-ID  :  AC02-76CH03073
RP-ID  :  814729

美国|英语

来源: UNT Digital Library

【 摘 要 】

Nonlinear equations for the slow space-time evolution of the radial drift wave envelope and zonal flow amplitude have been self-consistently derived for a model nonuniform tokamak equilibrium within the coherent 4-wave drift wave-zonal flow modulation interaction model of Chen, Lin, and White [Phys. Plasmas 7 (2000) 3129]. Solutions clearly demonstrate turbulence spreading due to nonlinearly enhanced dispersiveness and, consequently, the device-size dependence of the saturated wave intensities and transport coefficients.