The one-dimensional theoretical model, previously developed for stability studies of ITG modes in a plasma slab, is used for the calculation of the momentum and energy quasi-linear (QL) fluxes. In the first part of this work, the relevant transport equations are solved numerically in order to investigate the QL relaxation of initial velocity and ion pressure profiles. In the second part the global solution of the 2nd order eigenvalue differential equation for the complex electrostatic ITG fluctuation amplitude Fi (k) is calculated, and a comparative discussion for different toroidal velocity profiles is presented.
ITG-driven momentum transport in a plasma slab with a sheared longitudinal flow
Lontano M;Lazzaro E;
2007
Abstract
The one-dimensional theoretical model, previously developed for stability studies of ITG modes in a plasma slab, is used for the calculation of the momentum and energy quasi-linear (QL) fluxes. In the first part of this work, the relevant transport equations are solved numerically in order to investigate the QL relaxation of initial velocity and ion pressure profiles. In the second part the global solution of the 2nd order eigenvalue differential equation for the complex electrostatic ITG fluctuation amplitude Fi (k) is calculated, and a comparative discussion for different toroidal velocity profiles is presented.File in questo prodotto:
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