Advanced divertor configurations modify the magnetic geometry of the divertor to achieve a combination of strong magnetic flux expansion, increased connection length and higher divertor volume—to improve detachment stability, neutral/impurity confinement and heat‐channel broadening. In this paper, we discuss the modification of the flux‐coordinate independent (FCI) turbulence code GRILLIX to treat generalized magnetic geometry, to allow for the investigation of the effect of magnetic geometry on turbulent structures in the edge and scrape‐off layer (SOL). The development of grids and parallel operators from numerically defined magnetic equilibria is discussed, as is the application of boundary conditions via penalization, with the finite‐width method generalized to treat complex non‐conformal boundaries. Initial testing of hyperbolic (advection) and parabolic (diffusion) test cases are presented for the Snowflake scenario.

中文翻译：

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在磁通坐标独立的湍流代码GRILLIX中处理高级分流器配置

先进的偏滤器配置修改了偏滤器的磁几何形状，从而实现了强大的磁通膨胀，增加的连接长度和更大的偏滤器体积，从而提高了分离稳定性，中性/杂质限制和热通道拓宽。在本文中，我们讨论了修改磁通独立的（FCI）湍流代码GRILLIX以处理广义的磁性几何，以便研究磁性对边缘和刮擦层（SOL）中的湍流结构的影响）。讨论了由数字定义的磁平衡产生的网格和并行算子的发展，以及通过罚分法应用边界条件，并推广了使用有限宽度方法来处理复杂的非保形边界的方法。