Abstract
We construct a model for the turbulence near the X-point of a Tokamak device and, under suitable assumptions, we arrive to a closed equation for the electric field potential fluctuations. The analytical and numerical analysis is focused on a reduced two-dimensional formulation of the dynamics, which allows a direct mapping to the incompressible Navier-Stokes equation. The main merit of this study is to outline how the turbulence near the X-point, in correspondence to typical operation conditions of medium and large size Tokamaks, is dominated by the enstrophy cascade from large to smaller spatial scales.
Subject
Fluid Flow and Transfer Processes,Mechanical Engineering,Condensed Matter Physics
Reference37 articles.
1. Tokamaks;Wesson,2004
2. On Magnetohydrodynamical Equilibrium Configurations;Shafranov;Sov. JETP,1958
3. Diffusive time evolution of the Grad–Shafranov equation for a toroidal plasma
4. The Plasma Boundary of Magnetic Fusion Devices;Stangeby,2000
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献