| Tetrahedral Grid Yucca Mountain Unsaturated
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Geologic applications for grids produced with LaGriT
are modeling subsurface porous flow and reactive chemical transport by finite
element (FEHMN code developed at LANL) and finite difference methods. LaGriT
is also used as the first step in quality analysis and manipulation of
geometric data.
Projects in which LaGriT is utilized
include:
- Yucca Mountain Site Characterization Project (YMP)
- Nevada Test Site Underground Test Area Flow and Transport
Modeling
- Southern California Earthquake Center (SCEC) meshing of California
Fault Systems
- Environmental Restoration at Los Alamos and Savannah River
- Oil and Gas Reservoir Modeling
- Semiconductor Design Modeling
- High Speed Hydrodynamics
There are a wide variety of geological applications where accurate
representation of complex engineering systems and geologic structure and
stratigraphy is critical to producing accurate numerical models of fluid
flow and mass transport. Oil and gas reservoir production, groundwater resource
development and waste disposal in a geologic repository are examples of
the areas where modeling is used to predict the long term behavior of a
system. In all the systems, grid generation is a key link between the geoscientific
information systems and numerical models. Grids must capture complex geometry
and insure the computationals are optimized to produce accurate and stable
solutions. LaGriT is a toolbox library with functions to produce 2D and
3D grids of elements that are tetrahedral, triangular, hexahedral and quadrilaterals.
A 3D model of a computational mesh created from the 3D model is shown. 2D
grids with arbitrary orientation or 3D grids with complex boundaries can
be extracted from the geologic framework model. For more details refer to
the Geo Meshing Overview
(PDF).
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