Grid Project:   Discrete Fracture Networks

Grid Team Member: Quan Bui, Carl Gable
Grid Versions: V1
Delivered To: Scott Painter
Date Completed: 04/05/2013



Voronoi Cells


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Design Criteria


The Grid Method successfully follows the design criteria.

Given a network of intersecting fractures, we mesh each fracture separately and merge all the fractures into a network at the end. The method uses a newly developed capability that allows adaptive refinement according to a gradient field. The field chosen for this case is a simple linear function of a distance field, with a minimum floor value. The field is computed by LaGriT commands inside a separate .mlgi, .lgi, or any text file, which is needed for 'massage2' command.

A python script is also written to control the workflow and write lagrit command files for meshing and merging.

Input files

Run Sequence

python params.txt 8

Project Archive Location


FEHMN output files

-rw-r----- 1 quanb altern  9852836 Apr  5 14:29 tri_fracture.fehmn
-rw-r----- 1 quanb altern   783146 Apr  5 14:29
-rw-r----- 1 quanb altern   834805 Apr  5 14:29
-rw-r----- 1 quanb altern   691112 Apr  5 14:29
-rw-r----- 1 quanb altern    83835 Apr  5 14:29
-rw-r----- 1 quanb altern   483127 Apr  5 14:29 tri_fracture_outside_vor.area
-rw-r----- 1 quanb altern 24102832 Apr  5 14:29 tri_fracture.stor

Work Directory:



Grid Team Contacts

Carl Gable gable -at- lanl -dot- gov 505-665-3533
Quan Bui quanb -at- lanl -dot- gov 505-667-7362