1998-1999 ESD Annual Report

Page 80

ESD

Development of WinGrider: An Interactive Grid Generator for TOUGH2

Results

such as inclined faults with offset, layering structure, local refinements and repository drifts can be represented in the grid. This grid-maker has been used as a primary tool for designing model grids in modeling efforts for the Yucca Mountain project.

WinGrider is Windows-based software for designing, generating and visualizing numerical grids used in reservoir simulation and groundwater modeling using the TO U G H 2 code (Pan et al., 1999). Fi g u re 1 shows an example of the graphical user interfaces provided by WinGrider.WinGrider has been used for various numerical simulations in the Yucca Mountain project.The generated grids were verified independently in terms of accuracy in representing the geological and engineering systems as well as correctness of connections. Figures 2a and 2b show a map view of the UZ98 grid and a 2D cross-section grid for grid spacing analysis, respectively.

Significance Findings

Related

Publications

Pan, L., J. Hinds, C. Haukwa, Y.S. Wu and G.S. Bodvarsson, WinGrider: A user manual (version 1.0), Berkeley Lab report LBNL-42957, 1999. Pruess, K., TOUGH2: A general purpose numerical simulator for multiphase fluid and heat flow, Berkeley Lab report LBL-29400, 1991.

Funding

of

This work has been supported by the Dire c t o r, Office of Civilian Figure 2. Examples of the grid: (a) map view of UZ98 grid; (b) R a d i o a c t i ve Waste Management, E-W cross-section grid for grid side analysis. We have developed a user-friendly, t h rough Memorandum Purchase efficient grid-generating software that Order EA9013MC5X between TRW should provide an important tool for successful applications of Environmental Safety Systems, Inc., and Ernest Orlando Lawrence the TOUGH family of codes to solve real-world problems. B e rkeley National Lab o ra t o ry for the Yucca Mountain Site WinGrider can be used to generate complex, irregular 2-D or 3-D Characterization Project under U. S . Department of Energy grids with high quality and efficiency. Many important features, Contract No. DE-AC03-76SF00098.

http://www-esd.lbl.gov 74


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