FY05 LDRD Final Report Coupled Turbulenc/Transport Model for Edge-Plasmas

Rognlien, T ; Cohen, R ; LoDestro, L ; Palasek, R ; Umansky, M ; Xu, X

Lawrence Livermore National Laboratory

关键词: 75 Condensed Matter Physics, Superconductivity And Superfluidity;    70 Plasma Physics And Fusion Technology;    Simulation;    Plasma;    11 Nuclear Fuel Cycle And Fuel Materials;   

DOI  :  10.2172/900156
RP-ID  :  UCRL-TR-218800
RP-ID  :  W-7405-ENG-48
RP-ID  :  900156

美国|英语

来源: UNT Digital Library

【 摘 要 】

An edge-plasma simulation for tokamak fusion devices is developed that couples 3D turbulence and 2D transport, including detailed sources and sinks, to determine self-consistent steady-state plasma profiles. Relaxed iterative coupling is shown to be effective when edge turbulence is partially suppressed, for example, by shear E x B shear flow as occurs during the favorable H-mode region. Unsuppressed turbulence is found to lead to large, intermittent edge transport events where the coupling procedure can lead to substantial inaccuracies in describing the true time-averaged plasma behavior.