skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Modeling heterogeneous unsaturated porous media flow at Yucca Mountain

Abstract

Geologic systems are inherently heterogeneous and this heterogeneity can have a significant impact on unsaturated flow through porous media. Most previous efforts to model groundwater flow through Yucca Mountain have used stratigraphic units with homogeneous properties. However, modeling heterogeneous porous and fractured tuff in a more realistic manner requires numerical methods for generating heterogeneous simulations of the media, scaling of material properties from core scale to computational scale, and flow modeling that allows channeling. The Yucca Mountain test case of the INTRAVAL project is used to test the numerical approaches. Geostatistics is used to generate more realistic representations of the stratigraphic units and heterogeneity within units is generated using sampling from property distributions. Scaling problems are reduced using an adaptive grid that minimizes heterogeneity within each flow element. A flow code based on the dual mixed-finite-element method that allows for heterogeneity and channeling is employed. In the Yucca Mountain test case, the simulated volumetric water contents matched the measured values at drill hole USW UZ-16 except in the nonwelded portion of Prow Pass.

Authors:
 [1]
  1. Spectra Research Inst., Albuquerque, NM (United States)
Publication Date:
Research Org.:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
145200
Report Number(s):
SAND-94-0185; CONF-940553-18
ON: DE94008612; TRN: 94:011939
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: International high-level radioactive waste management conference, Las Vegas, NV (United States), 22-26 May 1994; Other Information: PBD: [1994]
Country of Publication:
United States
Language:
English
Subject:
05 NUCLEAR FUELS; 99 MATHEMATICS, COMPUTERS, INFORMATION SCIENCE, MANAGEMENT, LAW, MISCELLANEOUS; 58 GEOSCIENCES; TUFF; FLUID FLOW; HIGH-LEVEL RADIOACTIVE WASTES; UNDERGROUND DISPOSAL; YUCCA MOUNTAIN; HETEROGENEOUS EFFECTS; GROUND WATER; GEOLOGIC FAULTS; STRATIGRAPHY; WATER SATURATION; EQUATIONS; Yucca Mountain Project

Citation Formats

Robey, T H. Modeling heterogeneous unsaturated porous media flow at Yucca Mountain. United States: N. p., 1994. Web. doi:10.2172/60736.
Robey, T H. Modeling heterogeneous unsaturated porous media flow at Yucca Mountain. United States. https://doi.org/10.2172/60736
Robey, T H. Tue . "Modeling heterogeneous unsaturated porous media flow at Yucca Mountain". United States. https://doi.org/10.2172/60736. https://www.osti.gov/servlets/purl/145200.
@article{osti_145200,
title = {Modeling heterogeneous unsaturated porous media flow at Yucca Mountain},
author = {Robey, T H},
abstractNote = {Geologic systems are inherently heterogeneous and this heterogeneity can have a significant impact on unsaturated flow through porous media. Most previous efforts to model groundwater flow through Yucca Mountain have used stratigraphic units with homogeneous properties. However, modeling heterogeneous porous and fractured tuff in a more realistic manner requires numerical methods for generating heterogeneous simulations of the media, scaling of material properties from core scale to computational scale, and flow modeling that allows channeling. The Yucca Mountain test case of the INTRAVAL project is used to test the numerical approaches. Geostatistics is used to generate more realistic representations of the stratigraphic units and heterogeneity within units is generated using sampling from property distributions. Scaling problems are reduced using an adaptive grid that minimizes heterogeneity within each flow element. A flow code based on the dual mixed-finite-element method that allows for heterogeneity and channeling is employed. In the Yucca Mountain test case, the simulated volumetric water contents matched the measured values at drill hole USW UZ-16 except in the nonwelded portion of Prow Pass.},
doi = {10.2172/60736},
url = {https://www.osti.gov/biblio/145200}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {3}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: