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MPNE1D is a FORTRAN90 code that
implements the general analytical solution for one-dimensional solute
transport derived by C.J. Neville, M. Ibaraki, and E.A. Sudicky (Solute
Transport with Multiprocess Nonequilibrium: A Semi-Analytical Solution
Approach: Journal of Contaminant Hydrology 44: 141-159). The code is
available freely, and is included in the IGWMC collection of freeware
for hydrogeology.
The MPNE1D solution offers the ease of use, efficiency and reliability
of a robust analytical solution with a flexibility that is usually only
possible with numerical solutions. The solution is capable of
representing any combination of the following transport processes:
one-dimensional advection and dispersion (including purely diffusive
transport); dual porosity mobile-immobile mass transfer; combined
equilibrium and kinetic sorption; and first-order transformation
reactions.
The solution is capable of
simulating general initial and boundary conditions, including:
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Specified concentration or flux-type inflow boundary conditions,
with a general time-varying reservoir concentration;
-
A
semi-infinite domain;
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A
finite domain with specified concentration at the outflow boundary;
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A
finite domain with specified zero concentration gradient at the
outflow boundary; and
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An initial uniform concentration.
The MPNE1D solution is an ideal teaching tool, providing students with a
straightforward code for exploring solute transport processes. The
solution has also been applied for the interpretation of complex column
tests. The MPNE1D package includes source and executable code, example
data sets, and a PDF version of the user’s guide. The solution is coded
in standard FORTRAN77 and has been updated for FORTRAN90. The code has
been compiled without modifications to run on PCs (MS, Lahey F77L3,
Salford FTN77), VAX and UNIX-based compilers.
The most recent release of the code is Version 4.1, August 2004. The
code has been updated to incorporate the following:
The most
recent release of the code is Version 4.1, August 2004. The code has
been updated to incorporate the following:
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Compliance with ANSI Standard FORTRAN90;
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Simplified creation of concentration profiles (concentration vs.
distance) and breakthrough curves (concentration vs. time).
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Robust treatment of the case of purely diffusive transport; and
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Output of both mobile and immobile region concentrations.
Download the
Program Zipped file (1MB)
Disclaimer
These programs are provided FREE of charge. The authors request only
that application of the software and production of results using the
code is accompanied by a suitable acknowledgment. The software is
provided "AS IS", without warranty of any kind, including without
limitation the warranties of merchantability, fitness for a particular
purpose and non-infringement. The entire risk and responsibility as to
the quality and performance of the Software is borne by the user. The
author(s) disclaim all other warranties. |
