NAME
analgwst - A set of programs that calculate analytical solutions for
one-, two-, and three-dimensional solute transport in
ground-water systems with uniform flow
The individual programs are:
finite(1) - One-dimensional solute transport in a finite system
seminf(1) - One-dimensional solute transport in a semi-infinite
system
point2(1) - Two-dimensional solute transport in an infinite system
with a continuous point source
stripf(1) - Two-dimensional solute transport in a finite-width
system with a finite-width solute source
stripi(1) - Two-dimensional solute transport in an infinite-width
system with a finite-width solute source
gauss(1) - Two-dimensional solute transport in an infinite-width
system with solute source having a gaussian
concentration distribution
point3(1) - Three-dimensional solute transport in an infinite system
with a continuous point source
point3_mod(1) - Point3 program modified to reproduce result as
described in Wexler (1992a), page 49.
patchf(1) - Three-dimensional solute transport in a finite-width and
finite-height system with a finite-width and finite-
height source
patchi(1) - Three-dimensional solute transport in an infinite-width
and infinite-height system with a finite-width and
finite-height source
ABSTRACT
Analytical solutions to the advective-dispersive solute-transport
equation are useful in predicting the fate of solutes in ground
water. Computer programs that compute the analytical solutions
compiled from available literature or derived by E.J. Wexler are
provided for a variety of systems and boundary conditions.
HISTORY
Version 1.1 1996/04/03 - All programs have been restructured to a
consistent coding format and style.
DATA REQUIREMENTS
Each program requires data on advective velocity, dispersion
coefficient, spatial information, temporal information, and boundary
concentrations. Optional data may include a first-order solute-
decay coefficient.
OUTPUT OPTIONS
Output is the calculated concentrations at specified points in time
and space. A plotting option exists to view the output as graphs.
SYSTEM REQUIREMENTS
The computer programs are written in Fortran 77 with the following
extensions: use of include files and reference to compiler-dependent
system date and time routines. The computer programs were originally
written for a Prime minicomputer but all programs should run on IBM-
compatible personal computers with minor modifications as described
in Wexler (1992a). The plot routines are written with Computer
Associates' DISSPLA library references. Generally, the programs are
easily installed on most computer systems that have access to the
DISSPLA graphics library. Alternatively, graphics can be disabled
and data can be easily extracted from the program output and plotted
using graphic presentation programs. The programs have been used on
UNIX-based computers.
DOCUMENTATION
Wexler, E.J., 1992a, Analytical solutions for one-, two-, and three-
dimensional solute transport in ground-water systems with uniform
flow: U.S. Geological Survey Techniques of Water-Resources
Investigations, book 3, chap. B7, 190 p.
Wexler, E.J., 1992b, Analytical solutions for one-, two-, and three-
dimensional solute transport in ground-water systems with uniform
flow -- Supplemental Report: Source codes for computer programs
and sample data sets: U.S. Geological Survey Open-File Report
92-78, 3 p., 1 computer diskette.
TRAINING
Some of the programs are introduced in the class Ground-Water
Solute-Transport Concepts for Field Investigations (GW2005TC),
offered annually at the USGS National Training Center.
CONTACTS
Operation:
U.S. Geological Survey
Office of Ground Water
Thomas E. Reilly
411 National Center
Reston, VA 20192
tereilly@usgs.gov
Distribution:
U.S. Geological Survey
Hydrologic Analysis Software Support Program
437 National Center
Reston, VA 20192
h2osoft@usgs.gov
Official versions of U.S. Geological Survey water-resources analysis
software are available for electronic retrieval via the World Wide
Web (WWW) at:
http://water.usgs.gov/software/
and via anonymous File Transfer Protocol (FTP) from:
water.usgs.gov (path: /pub/software).
The WWW page and anonymous FTP directory from which the ANALGWST
software can be retrieved are, respectively:
http://water.usgs.gov/software/analgwst.html
--and--
/pub/software/ground_water/analgwst