Flow field data of three-dimensional Riemann problems

Nils Hoppe; Nico Fleischmann; Benedikt Biller; Stefan Adami; Nikolaus A Adams

doi:10.1016/j.dib.2024.110888

Flow field data of three-dimensional Riemann problems

Data Brief. 2024 Sep 5:57:110888. doi: 10.1016/j.dib.2024.110888. eCollection 2024 Dec.

Authors

Nils Hoppe¹, Nico Fleischmann¹, Benedikt Biller¹, Stefan Adami², Nikolaus A Adams¹

Affiliations

¹ Chair of Aerodynamics and Fluid Mechanics, Technical University of Munich, Boltzmannstr. 15, 85748 Garching, Germany.
² Munich Institute of Integrated Materials, Energy and Process Engineering, Technical, University of Munich, Lichtenbergstr. 4a, 85748 Garching, Germany.

Abstract

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.

Keywords: Compressible flow; Gas dynamics; High-order methods; High-resolution.