My interest is in finding permeability in Porous media; in my case petroleum rocks.
Typically the input is a 3-D image of a rock in .raw format, from where I need to evaluate the permeability.
Coming to the issue with which I need help.
I am trying to find out the permeability of cylindrical pipes, so that I can validate the simulation results with the values obtained from analytical expressions.
I have created 3 different pipe geometries.
- Pipe diameter 10 voxels, length 2000 voxels.
- Pipe diameter 20 voxels, length 2000 voxels.
- Pipe diameter 30 voxels, length 2000 voxels.
After running the permeability.cpp script of Palabos on these geometries, I am getting the results as
Where even the ratios are not analytically concordant, plus I am unsure about how to convert these units to physical units. I request you to tell me what is wrong with my approach, or suggest me a new one.