User's manual for the NEFTRAN computer code. [Contains glossary]

Technical Report · Tue Sep 01 00:00:00 EDT 1987

OSTI ID:5697848

Longsine, D E; Bonano, E J; Harlan, C P

This document describes the NEFTRAN (NEtwork Flow and TRANsport) computer code and provides the reader with enough detailed information to use the code. NEFTRAN was developed for the assessment of ground-water flow and radionuclide transport in high-level radioactive waste repositories mined in deep saturated and fractured geologic formations. NEFTRAN is a successor to NWFT/DVM and contains several new capabilities. These are generalized flow network, matrix diffusion, leg transfer, mixing cell, and multiple chains. This document's four main sections describe the mathematical representation of ground-water flow, radionuclide transport, matrix diffusion, source term, and leg-transfer models; the program and subprograms in the code; the input to the code; and sample problems highlighting each of the new capabilities of the code. 18 refs., 22 figs., 9 tabs.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5697848
• Report Number(s): NUREG/CR-4766; SAND-86-2405; ON: TI88002758
• Country of Publication: United States
• Language: English

Related Subjects

052002* -- Nuclear Fuels-- Waste Disposal & Storage
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTER CODES
COMPUTERIZED SIMULATION
DOCUMENT TYPES
ENVIRONMENTAL TRANSPORT
GEOLOGIC FRACTURES
GEOLOGIC STRUCTURES
GROUND WATER
HIGH-LEVEL RADIOACTIVE WASTES
HYDROGEN COMPOUNDS
MANAGEMENT
MANUALS
MASS TRANSFER
MATERIALS
N CODES
OXYGEN COMPOUNDS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTES
RADIONUCLIDE MIGRATION
ROCKS
SATURATION
SIMULATION
UNDERGROUND DISPOSAL
WASTE DISPOSAL
WASTE MANAGEMENT
WASTES
WATER
WATER SATURATION