CaP cells: μCT geometry, OpenFOAM case

This archive contains the input data and OpenFOAM case needed to reproduce the permeability results reported in "A novel upscaling approach for efficient permeability estimation of tight sandstones from large digital rock models" All simulations were conducted using OpenFOAM v2406 (https://www.openfoam.com/news/main-news/openfoam-v2406) Geometry/sandstone_image.raw - 1000×1000×1000-voxel RAW volume,Geometry/sandstone_pore_surf.stl - STL surface mesh of the same volume, Geometry/cubic_subdivision - folder with cubic subdivision geometry in STL format Geometry/flow-parallel - folder with flow-parallel subdivision geometry in STL formatGeometry/flow-orthogonal - folder with flow-orthogonal subdivision geometry in STL format Openfoam_case/ - complete steady-state single-phase flow case (OpenFOAM v2406) How to run the case: Navigate to the OpenFOAM case directory cd $FOAM_RUN/CaP_cells_directory/Openfoam_case Copy the STL file from a chosen geometry into constant/triSurface/, for example:cp ../Geometry/cubic_subdivision/cubic1.stl constant/triSurface/mv constant/triSurface/cubic1.stl constant/triSurface/test2.stl(The geometry file must be renamed to test2.stl — this is the expected name configured in snappyHexMeshDict) Adjust blockMeshDict according to the bounding box of the selected geometry. Optionally, adjust boundary conditions in the 0/ directory. Run the simulation using the provided script: ./run.sh