The network model is composed of throats and connected pore bodies.
We focused on a Palmottu granite sample, in which the connected pore space has a composite microstructure with cracks linking microporous minerals and is above the percolation threshold.
Solutions to the proposed inverse homogenization design problem feature simply connected pore spaces that closely resemble minimal surfaces, such as the triply periodic Schwartz P minimal surface for 3 − d isotropic, maximum permeability materials.
As both of these attributes may be characterized in terms of either length units (e.g. aperture), or ratios of length units (e.g. connected pore volume as a proportion of total volume), it is reasonable to relate permeability to strain.
LA-ICP-MS has a higher chemical resolution and larger observation scales than SEM, though lower spatial resolution, and reveals connected pore spaces that are not visible with SEM imaging.
Thus, stronger dynamic flow conditions (e.g., higher capillary numbers) may be required to remobilize connected, pore network-scale air globules than single pore-scale air globules in a forced imbibition process.
The method combines a 3D clustering analysis algorithm with a critical porosity determination scheme to study percolation properties of connected pore spaces and obtain a theoretical estimation of effective porosity of the rock sample at the percolation threshold.
Injection of a molten metal into connected pore spaces, followed by 2-D imaging of the solidified alloy in polished thin sections, allowed direct assessment of pore structure and lateral connection in the rock samples.
