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Title: PATHS groundwater hydrologic model

A preliminary evaluation capability for two-dimensional groundwater pollution problems was developed as part of the Transport Modeling Task for the Waste Isolation Safety Assessment Program (WISAP). Our approach was to use the data limitations as a guide in setting the level of modeling detail. PATHS Groundwater Hydrologic Model is the first level (simplest) idealized hybrid analytical/numerical model for two-dimensional, saturated groundwater flow and single component transport; homogeneous geology. This document consists of the description of the PATHS groundwater hydrologic model. The preliminary evaluation capability prepared for WISAP, including the enhancements that were made because of the authors' experience using the earlier capability is described. Appendixes A through D supplement the report as follows: complete derivations of the background equations are provided in Appendix A. Appendix B is a comprehensive set of instructions for users of PATHS. It is written for users who have little or no experience with computers. Appendix C is for the programmer. It contains information on how input parameters are passed between programs in the system. It also contains program listings and test case listing. Appendix D is a definition of terms.
Authors:
;
Publication Date:
OSTI Identifier:
5363786
Report Number(s):
PNL-3162
TRN: 80-010436
DOE Contract Number:
AC06-76RL01830
Resource Type:
Technical Report
Research Org:
Battelle Pacific Northwest Labs., Richland, WA (USA)
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 58 GEOSCIENCES; 54 ENVIRONMENTAL SCIENCES; FLOW MODELS; P CODES; HYDROLOGY; MATHEMATICAL MODELS; CONTAMINATION; ENVIRONMENTAL IMPACTS; ENVIRONMENTAL TRANSPORT; EVALUATION; GROUND WATER; RADIOACTIVE WASTE DISPOSAL; UNDERGROUND DISPOSAL; COMPUTER CODES; HYDROGEN COMPOUNDS; MANAGEMENT; MASS TRANSFER; OXYGEN COMPOUNDS; WASTE DISPOSAL; WASTE MANAGEMENT; WATER 052002* -- Nuclear Fuels-- Waste Disposal & Storage; 580100 -- Geology & Hydrology-- (-1989); 520100 -- Environment, Aquatic-- Basic Studies-- (-1989)