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Partitioning and dynamic load balancing of adaptive hybrid grids for large-scale turbulent flow simulations

机译:大规模湍流模拟中自适应混合网格的划分和动态负载均衡

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A new partitioning method for complex 3-D hybrid prismatic/tetrahedral meshes is presented. The method uses an orthogonal recursive bisection approach on a special octree corresponding to the hybrid grid. The octree is generated automatically and handles any type of 3-D geometry and domain connectivity. It is employed for partitioning of static, as well as dynamic adaptive meshes. The method yields similar quality partitions for very divergent geometries, such as a sphere and an aircraft configuration. The strategy for load balancing is applied to octants which leads to an efficient parallel algorithm. Results include partitioning a hybrid grid around an aircraft configuration and octree-based load balancing for a dynamically adapted mesh. The method is applied to large-scale turbulent flow simulations around aircraft configurations.
机译:提出了一种复杂的3-D混合棱柱/四面体网格划分的新方法。该方法在对应于混合网格的特殊八叉树上使用正交递归二等分方法。八叉树是自动生成的,可以处理任何类型的3-D几何图形和域连接。它用于静态和动态自适应网格的划分。对于非常不同的几何形状(例如球体和飞机配置),该方法会产生相似的质量划分。负载均衡策略应用于八分圆,这导致了高效的并行算法。结果包括围绕飞机配置对混合网格进行划分,以及基于八叉树的负载平衡,以实现动态自适应网格。该方法应用于飞机配置周围的大规模湍流模拟。

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