A pore-resolved interface tracking algorithm for simulating multiphase flow in arbitrarily structured porous media

We present an interface tracking algorithm that incorporates essential pore-scale invasion mechanisms for simulating multiphase flow in porous media capillary dominated regime. The allows the capture of actual shape medium with complex geometrical features, including both convex and concave particles or irregular channels. It also sharp edge pinning effect such menisci at corners can be naturally taken into account. firstly conduct simulations under imbibition drainage conditions a single junction micro-model disordered validation. is shown pore scale are accurately captured, macroscopic morphology reproduced. A series fluid displacement processes carried out across wide range intrinsic contact angles two-dimensional representation Berea sandstone. transition between stable fingering characterized using efficiency, fractal dimension, fluid–fluid interfacial length. This work deepens understanding media. Furthermore, presented offers highly efficient tool further exploration effects wettability, geometry, topology on realistic materials.