GRILLIX employs the flux‐coordinate independent approach (FCI), which allows us to study boundary plasma turbulence in realistic diverted configurations. Recently, the physical model in GRILLIX has been extended to a global drift‐reduced Braginskii model, without any separation between background and fluctuations. It includes electromagnetic and thermal dynamics with hot ions, relaxation of the Boussinesq approximation and non‐linear parametric dependencies. This contribution presents solutions to associated issues, that is, the ion diamagnetic polarization and the stiff parallel heat conduction. Simulations based on parameters characteristic for the Alcator C‐Mod tokamak were carried out. In circular geometry, the self‐consistent electric field contains zonal flows and geodesic acoustic modes in the confined region. In the scrape‐off layer, the electron parallel heat conduction and its boundary condition determine the temperature and electric field, leading to sheared flows at the last closed flux surface.

中文翻译：

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磁通坐标无关的湍流代码GRILLIX中的热力学

GRILLIX采用了独立于通量坐标的方法（FCI），这使我们能够研究逼真的转向配置中的边界等离子体湍流。最近，GRILLIX中的物理模型已扩展到全局减少漂移的Braginskii模型，背景与波动之间没有任何分离。它包括带有热离子的电磁和热动力学，Boussinesq近似的松弛和非线性参数依赖性。该贡献提出了对相关问题的解决方案，即离子抗磁极化和刚性平行热传导。基于Alcator C-Mod托卡马克的参数特征进行了仿真。在圆形几何中，自洽电场在受限区域中包含纬向流和测地声模。在刮除层中