Core Ideas The numerical solution of Richards' equation remains challenging. Space/time
discretization affects both computational effort and accuracy. Adaption of space and time …

Core Ideas Understanding of preferential flow is improving, stimulated partly by new
technologies. Empirical process understanding has outstripped the capability of models to …

A multiphase Darcy-Brinkman approach is proposed to simulate two-phase flow in hybrid
systems containing both solid-free regions and porous matrices. This micro-continuum …

The effect of root hairs on water uptake remains controversial. In particular, the key root hair
and soil parameters that determine their importance have been elusive. We grew maize …

The enormous growth in computational capabilities of recent years has made Navier–Stokes-
based simulation of flow and transport in natural porous media possible. Because of the …

In high-elevation, boreal and arctic regions, hydrological processes and associated water
bodies can be strongly influenced by the distribution of permafrost. Recent field and …

Modeling variably saturated flow in the vadose zone is of vital importance to many scientific
fields and engineering applications. Richardson–Richards equation (RRE, which is …

A micro-continuum approach is proposed to simulate the dissolution of solid minerals at the
pore scale in the presence of multiple fluid phases. The approach employs an extended …

Computational microfluidics for geosciences is the third leg of the scientific strategy that
includes microfluidic experiments and high-resolution imaging for deciphering coupled …

Abstract porousMedia4Foam is a package for solving flow and transport in porous media
using OpenFOAM®-a popular open-source numerical toolbox. We introduce and highlight …