Polluted drainage from weathering of sulfide-rich waste rock deposits can cause long-term
impairment to waterways and biodiversity near mining sites. Mechanistic models represent …

The presence of solute concentration fluctuations at spatial scales much below the scale of
resolution is a major challenge for modeling reactive transport in porous media. Overlooking …

Water age is a fundamental descriptor of the source, storage, and mixing of water in
watersheds. The Lagrangian, particle tracking, approach is a powerful tool for physically …

The reconstruction of smooth density fields from scattered data points is a procedure that
has multiple applications in a variety of disciplines, including Lagrangian (particle-based) …

Travel/residence time distributions (TTDs/RTDs) are important tools to evaluate the
vulnerability of catchments to contamination and understand many aspects of catchment …

Modeling chemical reactions on the basis of probabilistic rules has been employed in
Lagrangian schemes to simulate transport of solutes in porous media. Reactive random …

Traditional interpolation techniques for particle tracking include binning and convolutional
formulas that use pre-determined (ie, closed-form, parameteric) kernels. In many instances …

Mixing-limited reactions are central to a wide range of processes in natural and engineered
porous media. Recent advances have shown that concentration gradients sustained by flow …

The rate at which aerosols spread from a point source injection, such as from a ship or other
stationary pollution source, is critical for accurately representing subgrid plume spreading in …

Random walk particle tracking (RWPT) methods employ a Lagrangian discretization of
transported scalars into point particles to numerically solve the advection–dispersion …