We introduce the public version of the cosmological magnetohydrodynamical moving-mesh simulation code A repo . This version contains a finite-volume magnetohydrodynamics algorithm on an unstructured, dynamic Voronoi tessellation coupled to a tree-particle-mesh algorithm for the Poisson equation either on a Newtonian or cosmologically expanding spacetime. Time integration is performed adopting local time step constraints for each cell individually, solving the fluxes only across active interfaces, and calculating gravitational forces only between active particles, using an operator-splitting approach. This allows simulations with high dynamic range to be performed efficiently. A repo is a massively distributed-memory parallel code, using the message passing interface (MPI) communication standard and employing a dynamical workload and memory balancing scheme to allow for optimal use of multi-node parallel computers. The employed paral...

中文翻译：

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AREPO公开代码发布

我们介绍了宇宙学磁流体动力运动网模拟代码A repo的公开版本。此版本包含牛顿或宇宙学上扩展的时空上的非结构化动态Voronoi细分的有限体积磁流体动力学算法，以及泊松方程的树-粒子-网格算法。时间积分是通过对每个单元格分别采用本地时间步长约束，仅通过活动界面求解通量，并使用算子分解方法仅计算活动粒子之间的重力来执行的。这样可以有效地执行具有高动态范围的仿真。回购是一个大规模的分布式内存并行代码，使用消息传递接口（MPI）通信标准，并采用动态工作负载和内存平衡方案，以最佳地使用多节点并行计算机。受雇的人...