模拟近地面剪切层：用CSS研究扩散格式
Modeling the Near-Surface Shear Layer: Diffusion Schemes Studied With CSS
摘要：
当我们接近太阳对流模拟，试图模拟小规模的颗粒和超颗粒，甚至更大规模的对流内的近地表剪切层（NSSL）的相互作用，边界条件的处理和最小化的次网格尺度扩散过程变得越来越重要。在这里，我们评估的动态变化和能量通量平衡的流动建立在旋转球壳段，捕获大部分的NSSL与弯曲球形段（CSS）代码使用两种不同的扩散计划。CSS代码是一个新的大规模并行建模工具，能够模拟三维可压缩MHD对流与现实的太阳分层旋转球壳段。
英文摘要：
As we approach solar convection simulations that seek to model the interaction of small-scale granulation and supergranulation and even larger scales of convection within the near-surface shear layer (NSSL), the treatment of the boundary conditions and minimization of sub-grid scale diffusive processes become increasingly crucial. We here assess changes in the dynamics and the energy flux balance of the flows established in rotating spherical shell segments that capture much of the NSSL with the Curved Spherical Segment (CSS) code using two different diffusion schemes. The CSS code is a new massively parallel modeling tool capable of simulating 3-D compressible MHD convection with a realistic solar stratification in rotating spherical shell segments.
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