PHT3D is a multicomponent transport model for three-dimensional reactive transport in saturated porous media. It is currently being further developed, maintained and documented by Henning Prommer at CSIRO Land and Water Australia and Vincent Post at VU Amsterdam. The code is based on previous work carried out at Delft University of Technology, the University of Tübingen (Center for Applied Geoscience), the Contaminated Land Assessment and Remediation Research Centre (University of Edinburgh), and the University of Western Australia.
The most recent version of
the code (v2.00) incorporates MT3DMS
(5.2) for the simulation of three-dimensional advective-dispersive
multi-component transport and the geochemical model PHREEQC-2
(v2.14) for the quantification of reactive processes. PHT3D uses PHREEQC-2 database files to
define
equilibrium and kinetic (e.g., biodegradation) reactions.
MT3DMS is based on MT3D, originally developed by Chunmiao Zheng at S.S. Papadopulos & Associates, Inc. and documented for the United States Environmental Protection Agency. MT3DMS is written by Chunmiao Zheng and P. Patrick Wang with the iterative solver routine by Tsun-Zee Mai. Funding for MT3DMS development was provided, in part, by U.S. Army Corps of Engineers Waterways Experiment Station.
PHREEQC-2 is a computer program written in the C programming language that is designed to perform a wide variety of low-temperature aqueous geochemical calculations. PHREEQC-2 was developed by D.L. Parkhurst as part of the Reaction-Transport Modeling in Ground-Water Systems Project at USGS and C.A.J. Appelo. It is based on former versions of PHREEQC/PHREEQE by D.L. Parkhurst.
As the public-domain codes PHREEQC-2 and MT3DMS form the core of the coupled model, the underlying work of D.L. Parkhurst, C.A.J. Appelo, C. Zheng and their co-workers is greatly acknowledged.
PHT3D has been incorporated into the PMWIN pre/postprocessing package and is now also available under Visual Modflow (> v4.1).
PHT3D has been tested for benchmark problems
from the literature and
applied successfully for a wide range of biogeochemical transport
modelling studies. Executables of the code are available for
Win98/Win XP and Linux 
. An MPI-based parallel version of PHT3D
v2.00 has been developed by Aaron McDonough (CSIRO Advanced Scientic Computing
Group). This version is currently being tested on a range of HPC
platforms and will be available here shortly.
(last modified 03/02/2009)