Transient Two-Phase Flow in Porous Media: A Literature Review and Engineering Application in Geotechnics

This work reviews the transient two-phase flow in porous media with engineering applications Geotechnics. It initially overviews constitutive relationships, conventional theories, and experiments. Then, corresponding limitations are discussed according to conflicting observations multiphase interfacial dynamics. Based on those findings, dynamic nonequilibrium effects were so defined, which could also be abbreviated as dynamic/transient effects. Four advanced theories have already been developed resolve these review collects them discusses their pros cons. In addition, this further state-of-art terms of experimental methods, influential factors effects, modelling performance, well micromodel numerical methods at pore-scale. Last, geotechnical reviewed, discussing applicability effective stress, shear strength, deformation. Finally, entire is briefed identify research gaps