Direct Numerical Simulation Database for Three-Dimensional Kolmogorov Flow

The current dataset consists of three-dimensional direct numerical simulation (DNS) data for Kolmogorov flow. The simulations were performed using the NEK5000 computational fluid dynamics solver [1]. The dataset includes 19 distinct cases, each featuring different configurations such as varying excitation modes, force amplitudes, and spatial resolutions. An article describing the simulation cases has been published [2], and can be accessed at https://doi.org/10.1038/s41597-026-06899-9. [1] Fischer, P., Lottes, J., & Tufo, H. Nek5000 Tech. Rep. (Argonne National Laboratory (ANL), Argonne, IL, United States, 2007). [2] Kovács, K. A., Balogh, M., & Kristóf, G. Direct numerical simulation of three-dimensional Kolmogorov flow for turbulence model development. Scientific Data (2026). https://doi.org/10.1038/s41597-026-06899-9.