Christopher T Green, Ph.D.
Christopher Green is a Research Hydrologist with the USGS Water Resources Mission Area.
Research Interests
- Flow and reactive transport in complex geological media
- Nitrogen cycling and fluxes in groundwater in agricultural areas
- Flow and solute transport in the unsaturated zone
- Gas transport in the unsaturated zone
- Effects of biofuels crops on groundwater quality
Science and Products
Filter Total Items: 52
Multiphase flow in geometrically simple fracture intersections Multiphase flow in geometrically simple fracture intersections
A two-dimensional lattice Boltzmann (LB) model with fluid-fluid and solid-fluid interaction potentials was used to study gravity-driven flow in geometrically simple fracture intersections. Simulated scenarios included fluid dripping from a fracture aperture, two-phase flow through intersecting fractures and thin-film flow on smooth and undulating solid surfaces. Qualitative comparisons...
Authors
H. Basagaoglu, P. Meakin, C.T. Green, M. Mathew
Evaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals Evaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals
Seven unsaturated-zone solute-transport models were tested with two data sets to select models for use by the Agricultural Chemical Team of the U.S. Geological Survey's National Water-Quality Assessment Program. The data sets were from a bromide tracer test near Merced, California, and an atrazine study in the White River Basin, Indiana. In this study the models are designated either as...
Authors
Bernard Nolan, E. Bayless, Christopher Green, Sheena Garg, Frank Voss, David Lampe, Jack Barbash, Paul Capel, Barbara Bekins
Percolation and transport in a sandy soil under a natural hydraulic gradient Percolation and transport in a sandy soil under a natural hydraulic gradient
Unsaturated flow and transport under a natural hydraulic gradient in a Mediterranean climate were investigated with a field tracer experiment combined with laboratory analyses and numerical modeling. Bromide was applied to the surface of a sandy soil during the dry season. During the subsequent rainy season, repeated sediment sampling tracked the movement of bromide through the profile...
Authors
Christopher Green, David Stonestrom, Barbara Bekins, Katherine Akstin, Marjorie S. Schulz
Lattice-Boltzmann simulation of coalescence-driven island coarsening Lattice-Boltzmann simulation of coalescence-driven island coarsening
The first-order phase separation in a thin fluid film was simulated using a two-dimensional lattice-Boltzman model (LBM) with fluid-fluid interactions. The effects of the domain size on the intermediate asymptotic island size distribution were also discussed. It was observed that the overall process is dominated by coalescence which is independent of island mass. The results show that...
Authors
H. Basagaoglu, C.T. Green, P. Meakin, B.J. McCoy
Science and Products
Filter Total Items: 52
Multiphase flow in geometrically simple fracture intersections Multiphase flow in geometrically simple fracture intersections
A two-dimensional lattice Boltzmann (LB) model with fluid-fluid and solid-fluid interaction potentials was used to study gravity-driven flow in geometrically simple fracture intersections. Simulated scenarios included fluid dripping from a fracture aperture, two-phase flow through intersecting fractures and thin-film flow on smooth and undulating solid surfaces. Qualitative comparisons...
Authors
H. Basagaoglu, P. Meakin, C.T. Green, M. Mathew
Evaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals Evaluation of unsaturated-zone solute-transport models for studies of agricultural chemicals
Seven unsaturated-zone solute-transport models were tested with two data sets to select models for use by the Agricultural Chemical Team of the U.S. Geological Survey's National Water-Quality Assessment Program. The data sets were from a bromide tracer test near Merced, California, and an atrazine study in the White River Basin, Indiana. In this study the models are designated either as...
Authors
Bernard Nolan, E. Bayless, Christopher Green, Sheena Garg, Frank Voss, David Lampe, Jack Barbash, Paul Capel, Barbara Bekins
Percolation and transport in a sandy soil under a natural hydraulic gradient Percolation and transport in a sandy soil under a natural hydraulic gradient
Unsaturated flow and transport under a natural hydraulic gradient in a Mediterranean climate were investigated with a field tracer experiment combined with laboratory analyses and numerical modeling. Bromide was applied to the surface of a sandy soil during the dry season. During the subsequent rainy season, repeated sediment sampling tracked the movement of bromide through the profile...
Authors
Christopher Green, David Stonestrom, Barbara Bekins, Katherine Akstin, Marjorie S. Schulz
Lattice-Boltzmann simulation of coalescence-driven island coarsening Lattice-Boltzmann simulation of coalescence-driven island coarsening
The first-order phase separation in a thin fluid film was simulated using a two-dimensional lattice-Boltzman model (LBM) with fluid-fluid interactions. The effects of the domain size on the intermediate asymptotic island size distribution were also discussed. It was observed that the overall process is dominated by coalescence which is independent of island mass. The results show that...
Authors
H. Basagaoglu, C.T. Green, P. Meakin, B.J. McCoy