Abstract Sea-ice pore microstructure constrains ice transport properties, affecting fluid flow relevant to oil-in-ice and biogeochemical processes. Motivated by a lack of microstructural data, in particular for granular across the seasonal cycle, throat size, tortuosity, connectivity, other variables were derived from X-ray computed tomography brine-filled pores landfast off northern Alaska. Da...

Packed bed reactors are common reactor types in chemical industries. In case of reactions with large heat effects, bundles slender tubes used. For such tubes, the column-to-particle diameter ratio, N, is small, which can give rise to significant flow channelling. This research uses two particle-scale numerical approaches, namely particle-resolved computational fluid dynamics (PR-CFD) and pore n...

Computational pore-scale network models describe two-phase porous media ̄ow systems by resolving individual interfaces at the pore scale, and tracking these interfaces through the pore network. Coupled with volume averaging techniques, these models can reproduce relationships between measured variables like capillary pressure, saturation, and relative permeability. In addition, these models all...

[1] Several models for two-phase flow in porous media identify trapping and connectivity of fluids as an important contribution to macroscale hysteresis. This is especially true for hysteresis in relative permeabilities. The trapping models propose trajectories from the initial saturation to the end saturation in various ways and are often based on experiments or pore-network model results for ...

In order to safely store CO2 in depleted reservoirs and deep saline aquifers, a better understanding of the storage mechanisms of CO2 is needed. Reaction of CO2 with minerals to form precipitate in the subsurface helps to securely store CO2 over geologic time periods, but a concern is the formation of localized channels through which CO2 could travel at large, localized rates. Pore-scale networ...

A pore network model of isothermal drying is presented. The takes into account the capillary effects, transport vapor by diffusion, including Knudsen effect, in gas phase, and Kelvin effect. seen as a first step toward simulation mesoscopic porous materials involving sizes between 4 nm 50 nm. major issue addressed with present computation menisci mean curvature radius at boundary each liquid cl...

A deep understanding of two-phase displacement in porous media with permeability contrast is essential for the design and optimisation enhanced oil recovery processes. In this paper, we investigate forced imbibition behaviour two dual-permeability geometries that are equal contrast. First, a mathematical model developed pore doublet, which shows dynamics can be fully described by viscosity rati...

Accurate pore pressure prediction is a necessary requirement to well structure optimizing, drilling difficulty minimizing, drilling accidents preventing. It plays a very important role in the economically and efficiently well operating. Previous methods for pore prediction have their own hypothesizes and cannot take into consideration factors that indicate or influence the pore pressure, so the...

Our paper ‘‘Upscaling geochemical reaction rates using pore-scale network modeling’’ [1] presents a novel application of pore-scale network modeling to upscale mineral dissolution and precipitation reaction rates from the pore scale to the continuum scale, and demonstrates the methodology by analyzing the scaling behavior of anorthite and kaolinite reaction kinetics under conditions related to ...