HydroBioGeoChem (HBGC) readme.txt, last updated Wednesday, July 22, 1998

1. What is HBGC

The computer program HYDROBIOGEOCHEM is a coupled model of HYDROlogic transport 
and BIOGEOCHEMical kinetic and/or equilibrium reactions in saturated/unsaturated 
media.  HYDROBIOGEOCHEM iteratively solves the two-dimensional transport equations 
and the ordinary differential and algebraic equations of mixed biogeochemical 
reactions.  The transport equations are solved for all aqueous chemical components 
and kinetically controlled aqueous species. 

HYDROBIOGEOCHEM is designed for generic application to reactive transport problems 
affected by both microbiological and geochemical reactions in subsurface media.  
Input to the program includes the geometry of the system, the spatial distribution 
of finite elements and nodes, the properties of the media, the potential chemical 
and microbial reactions, and the initial and boundary conditions.  Output includes 
the spatial distribution of chemical and microbial concentrations as a function of 
time and space, and the chemical speciation at user-specified nodes.

2. Contents of the distribution

This HBGC documentation distribution contains the following 18 postscript files:

MST_HBGC.PS
HBGCPT1.PS      
HBGCPT2.PS
HBGCPT3.PS
HBGCPT4.PS      
REFS.PS         
APP_A.PS        
DLHBGC.PS
FIG6_1.PS       
FIG6_3.PS       
FIG6_5.PS       
FIG6_6.PS       
FIG6_7.PS
FIG6_8.PS       
FIG6_9.PS       
FIG6_10.PS
FIG6_11.PS      
FIG6_12.PS

and the errata including the following 3 postscript files

P2.25.PS       
PA.35.PS       
PA.39.PS       

3. Minimum requirement for printing the files

A postscript printer with at least level one postscript fonts is required.  For 
commands to print the files on various platforms, please consult your system operators.

4. How to contact us

If you have any questions or problems regarding the distribution, please contact

J. P. (Jack) Gwo
Oak Ridge National Laboratory
Center for Computational Sciences
P.O. Box 2008, MS6203
Oak Ridge, TN 37831-6203
Phone: 423-576-1620
Email: g4p@ornl.gov

or 

G. T. (George) Yeh
Department of Civil and Environmental Engineering
Pennsylvania State University
University Park, PA 16802
Phone: 814-863-2931
Email: gty2@psu.edu