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

T Rognlien, R Cohen, L LoDestro, R Palasek, M Umansky, X Xu
2006 unpublished
An edge-plasma simulation for tokamak fusion devices is developed that couples 3D turbulence and 2D transport, including detailed sources and sinks, to determine selfconsistent steady-state plasma profiles. Relaxed iterative coupling is shown to be effective when edge turbulence is partially suppressed, for example, by shear ExB 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
more » ... re can lead to substantial inaccuracies in describing the true time-averaged plasma behavior.
doi:10.2172/900156 fatcat:ko2q7mv6m5aflk6cyszrkrl774