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Global Change Master Directory (GCMD)
PHAST: A Computer Program for Simulating Ground-Water Flow, Solute Transport, and Multicomponent Geochemical Reactions
Entry ID: USGS_PHAST


Summary
Abstract: The computer program PHAST ( PH REEQC A nd H ST 3D) simulates multicomponent, reactive solute transport in three-dimensional saturated groundwater flow systems. PHAST is a versatile groundwater flow and solute-transport simulator with capabilities to model a wide range of equilibrium and kinetic geochemical reactions. The flow and transport calculations are based on a modified version of HST3D that is restricted to constant fluid density and constant temperature. The geochemical reactions are simulated with the geochemical model PHREEQC, which is embedded in PHAST. Major enhancements in PHAST Version 2 allow spatial data to be defined in a combination of map and grid coordinate systems, independent of a specific model grid (without node-by-node input). At run time, aquifer properties are interpolated from the spatial data to the model grid; regridding requires only redefinition of the grid without modification of the spatial data.

Related URL
Link: DOWNLOAD SOFTWARE
Description: Download the PHAST software. On this page, you can also finid related documentation.

ISO Topic Category
GEOSCIENTIFIC INFORMATION
INLAND WATERS
ENVIRONMENT


Keywords
Model
Simulation
Solute Transport
Ground-water flow
Ground-water systems
kinetic geochemical reactions


Personnel
TYLER B. STEVENS
Role: SERF AUTHOR
Phone: 301-851-8113
Email: Tyler.B.Stevens at nasa.gov
Contact Address:
5700 Rivertech Court
City: Riverdale
Province or State: MD
Postal Code: 20737
Country: USA


DAVID L.. PARKHURST
Role: TECHNICAL CONTACT
Phone: 303-236-5098
Email: dlpark at usgs.gov
Contact Address:
U.S. Geological Survey
P.O. Box 25046, ms413
City: Lakewood
Province or State: CO
Postal Code: 80225
Country: USA


Extended Metadata Properties
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Creation and Review Dates
SERF Creation Date: 2005-10-20
SERF Last Revision Date: 2018-10-19



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