Multi-scale Transport Simulation of Internal Transport Barrier Formation and Collapse
نویسنده
چکیده
The mechanism of internal transport barrier (ITB) collapse in the reversed magnetic shear configuration is investigated using a global Ion Temperature Gradient driven drift wave (ITG) turbulence code. The heating source and the Toroidal Momentum Source (TMS) is introduced to follow the selfconsistent evolution of the ion temperature and flow profiles. The Toroidal Flow Shear (TFS) effect on the dynamics of ITB evolution is clarified. It is found that the lifetime of ITB depends on the total flow shear, i.e., the equilibrium flow shear determined by TMS and the ITG turbulence driven flow shear.
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تاریخ انتشار 2008