Database of Generated Rock Microstructures and their computed Geometrical and Hydraulic properties

Sijmen Zwarts , Winston Lindqwister, Martin Lesueur

There is a strong link between a material’s microstructural features and its macroscopic physical properties. However, heterogeneities in real-world rock microstructures often
result in strong cross-correlations between the microscopic features, making it difficult to evaluate the influence of individual characteristics. Minkowski functionals (MFs), a set of measures derived from integral geometry, have recently gained attention as a robust way to quantify microstructural features. Recent datasets include the computed MFs to study their influence, but typically lack variation in individual MFs and offer limited ability to isolate specific contributions. Therefore, we present a curated, open-source dataset of microstructures, including random packings with varying grain shapes and cemented configurations featuring complex void networks. For each microstructure, the corresponding MFs are computed alongside the results of Stokes flow simulations. The controlled variation in particle shape and packing fraction enables a broader range of MFs, allowing for targeted analysis of how specific microstructural features influence macroscopic properties. This dataset supports the development and validation of structure–property models.