Abstract A new code to simulate special relativistic hydrodynamic flows on supercomputer architectures with distributed memory is described. The code is based on a combination of Godunov’s method and a piecewise parabolic method with a local stencil. This approach has good conservation properties, correctly reproduces shock waves, and ensures high accuracy on smooth solutions and low dissipation on discontinuities. Only a local computation stencil is needed for the piecewise parabolic reconstruction of the solution. The code scalability is 94% on a cluster, Intel Xeon X5670 NKS-30T, with 768 cores. The results of code verification using a relativistic jet problem and computational experiments on the evolution of a galactic jet are presented. Program summary Program title: RHydroBox3D CPC Library link to program files: https://dx.doi.org/10.17632/xskchgynfy.1 Licensing provisions: GNU General Public License 3 Programming language: C++ Nature of problem: The special relativistic hydrodynamic flows. Solution method: The combination of Godunov’s method and a piecewise parabolic method on a local stencil. Additional comments including restrictions and unusual features: External library – MPI.

中文翻译：

---

利用低耗散方案在超级计算机上进行相对论流数值模拟的新代码

摘要 描述了一种在具有分布式内存的超级计算机体系结构上模拟特殊相对论流体动力流动的新代码。该代码基于 Godunov 方法和具有局部模板的分段抛物线方法的组合。这种方法具有良好的守恒特性，可以正确再现冲击波，并确保平滑解的高精度和不连续性的低耗散。解的分段抛物线重建只需要一个局部计算模板。在具有 768 个内核的 Intel Xeon X5670 NKS-30T 集群上，代码可扩展性为 94%。介绍了使用相对论射流问题的代码验证结果和银河射流演化的计算实验。程序摘要 程序标题：RHydroBox3D CPC 库程序文件链接：https://dx.doi.org/10。17632/xskchgynfy.1 许可条款：GNU 通用公共许可证 3 编程语言：C++ 问题性质：特殊的相对论流体动力学流动。求解方法：Godunov 方法和局部模板上的分段抛物线方法的组合。包括限制和不寻常功能在内的其他评论：外部库 - MPI。