"""
.. module:: false_connections.py
:synopsis: Checks for false connections between fractures in upscaled mesh
.. moduleauthor:: Jeffrey Hyman <jhyman@lanl.gov>
"""
import pickle
import os
[docs]def check_false_connections(self, path="../"):
"""
Parameters
----------
self : object
DFN Class
fmc_filname : string
name of the pickled dictionary of mesh and fracture intersections
Returns
-------
num_false_connections : int
number of false connections
num_cell_false : int
number of Voronoi cells with false connections
false_connections : list
list of tuples of false connections created by upscaling
Notes
-----
map2continuum and upscale must be run first to create the fracture/mesh intersection
dictionary. Thus must be run in the main job directory which contains connectivity.dat
"""
print("--> Checking for false connections in the upscaled mesh.")
# Create symbolic links to create fracture graph
files = ["connectivity.dat", "left.dat", "right.dat", "fracture_info.dat"]
for f in files:
try:
os.symlink(path + f, f)
except:
print(f"--> Warning!!! Unable to make symbolic link to {path+f}")
pass
# create fracture graph, with arbitrary source/target
G = self.create_graph("fracture", "left", "right")
# remove source and target
G.remove_node("s")
G.remove_node("t")
# Make a copy of G and remove all edges
H = G.copy()
for u, v in H.edges():
H.remove_edge(u, v)
# load the fracture_mesh_connection dictionary
print("--> Loading mesh intersection information")
fmc = pickle.load(open("connections.p", "rb"))
print("--> Complete")
# Get cell ids for the cells that fractures intersect
cells = [key for key in fmc.keys()]
# walk through the cells and add edges to graph H
# if two fractures are in the same cell
cell_false = [False] * len(cells)
for i, cell in enumerate(cells):
num_conn = len(fmc[cell])
# If more than one fracture intersects the mesh cell
# add edges
if num_conn > 1:
# add edges between all fractures in a cell
for j in range(num_conn):
id1 = fmc[cell][j][0]
for k in range(j + 1, num_conn):
id2 = fmc[cell][k][0]
H.add_edge(id1, id2)
cell_false[i] = True
## check for false connections
print("--> Checking for false connections")
false_connections = []
for u, v, in H.edges():
if not G.has_edge(u, v):
print(f"--> False connection between fractures {u} and {v}")
false_connections.append((u, v))
if len(false_connections) > 0:
num_false_connections = len(false_connections)
print(
f"--> There are {num_false_connections} false connections between fractures"
)
num_false_cells = sum(cell_false)
print(f"--> These occur in {num_false_cells} Voronoi cells")
else:
print(f"--> No false connections found")
num_false_cells = 0
num_false_connections = 0
return (num_false_connections, num_false_cells, false_connections)