Hoppe Nils, Fleischmann Nico, Biller Benedikt, Adami Stefan, Adams Nikolaus A
Chair of Aerodynamics and Fluid Mechanics, Technical University of Munich, Boltzmannstr. 15, 85748 Garching, Germany.
Munich Institute of Integrated Materials, Energy and Process Engineering, Technical, University of Munich, Lichtenbergstr. 4a, 85748 Garching, Germany.
Data Brief. 2024 Sep 5;57:110888. doi: 10.1016/j.dib.2024.110888. eCollection 2024 Dec.
Common validation and verification test cases for compressible flow solvers are only one- or two-dimensional. Such flows, however, are inherently three-dimensional. The provided data contains simulation results of genuine three-dimensional Riemann problems computed with the open-source compressible flow solver ALPACA. The problems are designed so that each octant's constant initial state connects two neighboring states by only one elementary wave each. Thereby, initial conditions are chosen to induce three-dimensional effects. Furthermore, the cases are designed to trigger common shortcomings of compressible flow solvers, such as spurious pressure oscillations, unphysical symmetry breaking, or the onset of shock disturbances. The cases were simulated using a finite-volume scheme with HLLC and Roe Riemann solvers and fifth-order WENO reconstruction. The simulations were conducted on over 300 cores of a compute cluster. Besides the raw binary flow field data, input files are provided next to post-processing scripts and the visualizations obtained by them. The provided files ease setting up and simulating the respective cases with different solvers and allow quantitative comparisons of the obtained results.
可压缩流求解器常见的验证和确认测试用例仅为一维或二维。然而，此类流动本质上是三维的。所提供的数据包含使用开源可压缩流求解器ALPACA计算的真实三维黎曼问题的模拟结果。这些问题的设计使得每个卦限的恒定初始状态仅通过一个基本波连接两个相邻状态。由此，选择初始条件以引发三维效应。此外，这些案例旨在揭示可压缩流求解器的常见缺陷，如虚假压力振荡、非物理对称性破缺或激波扰动的出现。这些案例使用具有HLLC和Roe黎曼求解器以及五阶WENO重构的有限体积格式进行模拟。模拟在计算集群的300多个核心上进行。除了原始二进制流场数据外，还提供了输入文件以及后处理脚本和由它们获得的可视化结果。所提供的文件便于使用不同的求解器设置和模拟各个案例，并允许对所得结果进行定量比较。
