Turbulence simulations in diverted geometry across the edge and scrape-off layer (SOL) of ASDEX Upgrade are performed with the GRILLIX code (Stegmeir et al 2019 Phys. Plasmas 26 052517). The underlying global (full-f) drift-reduced Braginskii model allows to concurrently study the self-consistent dynamics of the turbulence and the background as well as the evolution of toroidal and zonal flows. Different contributions to the radial electric field are identified. The dominant contribution on closed flux surfaces comes from the ion pressure gradient, due to the diamagnetic drift in the curved magnetic field. Large deviations can be induced, in particular, by the polarization particle flux, leading to zonal flows. The latter are driven by small-scale eddies, but do not exhibit much impact on the overall transport which is driven by ballooning modes at larger scales. Ion viscosity is found to be important in damping poloidal rotation through adjusting of the parallel velocity profile, but not via direct vorticity damping. The zonal flow drive peaks at the separatrix, where a strong shear layer forms due to the sheath-induced counter-propagating SOL flow, allowing for the formation of a transport barrier. The temperature profile across the separatrix is determined by the competition between cross-field transport and outflow in the SOL, the latter being largely controlled by the parallel heat conductivity.

在跨越边缘和转向几何删削层ASDEX的（SOL）湍流模拟升级与GRILLIX代码执行（Stegmeir等人2019米的PHY。等离子体 26 052517）。底层的全局（全˚F减少漂移的Braginskii模型允许同时研究湍流和背景的自洽动力学以及环流和纬向流的演变。确定了对径向电场的不同贡献。由于弯曲磁场中的反磁性漂移，封闭的通量表面上的主要贡献来自离子压力梯度。尤其是极化粒子通量会引起较大的偏差，从而导致区域流。后者是由小规模的涡旋驱动的，但对整体运输没有太大的影响，而总体运输是由较大规模的膨胀模式驱动的。发现离子粘度在通过调节平行速度分布而不是通过直接涡旋阻尼来抑制极向旋转中很重要。地层流驱动峰值在分离层，由于鞘层诱导的反向传播的SOL流，在此处形成了一个强剪切层，从而形成了传输屏障。跨分离层的温度曲线由SOL中的跨场传输和流出之间的竞争决定，后者在很大程度上受平行的热导率控制。