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##############################################################################
#
# Copyright (c) 2009-2016 by The University of Queensland
# http://www.uq.edu.au
#
# Primary Business: Queensland, Australia
# Licensed under the Apache License, version 2.0
# http://www.apache.org/licenses/LICENSE-2.0
#
# Development until 2012 by Earth Systems Science Computational Center (ESSCC)
# Development 2012-2013 by School of Earth Sciences
# Development from 2014 by Centre for Geoscience Computing (GeoComp)
#
##############################################################################
from __future__ import division, print_function
__copyright__="""Copyright (c) 2009-2016 by The University of Queensland
http://www.uq.edu.au
Primary Business: Queensland, Australia"""
__license__="""Licensed under the Apache License, version 2.0
http://www.apache.org/licenses/LICENSE-2.0"""
__url__="https://launchpad.net/escript-finley"
"""
Author: Antony Hallam antony.hallam@uqconnect.edu.au
"""
############################################################FILE HEADER
# example10m.py
# Create a simple 2D mesh, which is optimised for cells close to the
# source. Larger elements are used to decrease computational requirements
# and to properly fullfil the boundary conditions.
#
#######################################################EXTERNAL MODULES
from esys.escript import mkDir, getMPISizeWorld, hasFeature
from esys.pycad import * #domain constructor
from esys.pycad.extras import layer_cake
from esys.pycad.gmsh import Design #Finite Element meshing package
try:
from esys.finley import MakeDomain
HAVE_FINLEY = True
except ImportError:
print("Finley module not available")
HAVE_FINLEY = False
########################################################MPI WORLD CHECK
if getMPISizeWorld() > 1 or (hasFeature('mpi') and hasFeature('gmsh_mpi')):
print("This example will not run in an MPI world!")
elif HAVE_FINLEY:
import os
import subprocess as sp
# make sure path exists
save_path = os.path.join("data","example10m")
mkDir(save_path)
################################################BIG DOMAIN
#ESTABLISHING PARAMETERS
width=10000. #width of model
depth=10000. #depth of model
bele_size=500. #big element size
#DOMAIN CONSTRUCTION
p0=Point(0.0, 0.0)
p1=Point(width, 0.0)
p2=Point(width, depth)
p3=Point(0.0, depth)
# Join corners in anti-clockwise manner.
l01=Line(p0, p1)
l12=Line(p1, p2)
l23=Line(p2, p3)
l30=Line(p3, p0)
cbig=CurveLoop(l01,l12,l23,l30)
################################################SMALL DOMAIN
#ESTABLISHING PARAMETERS
xwidth=1000.0 #x width of model
zdepth=1000.0 #y width of model
sele_size=10. #small element size
#TRANSFORM
xshift=width/2-xwidth/2
zshift=depth/2-zdepth/2
#DOMAIN CONSTRUCTION
p4=Point(xshift, zshift)
p5=Point(xwidth+xshift, zshift)
p6=Point(xwidth+xshift, zdepth+zshift)
p7=Point(xshift, zdepth+zshift)
# Join corners in anti-clockwise manner.
l45=Line(p4, p5)
l56=Line(p5, p6)
l67=Line(p6, p7)
l74=Line(p7, p4)
csmall=CurveLoop(l45,l56,l67,l74)
ssmall=PlaneSurface(csmall)
sbig=PlaneSurface(cbig,holes=[csmall])
#############################################EXPORTING MESH FOR ESCRIPT
# Design the geometry for the big mesh.
d1=Design(dim=2, element_size=bele_size, order=1)
d1.addItems(sbig)
d1.addItems(PropertySet(l01,l12,l23,l30))
d1.setScriptFileName(os.path.join(save_path,"example10m_big.geo"))
MakeDomain(d1)
# Design the geometry for the small mesh.
d2=Design(dim=2, element_size=sele_size, order=1)
d2.addItems(ssmall)
d2.setScriptFileName(os.path.join(save_path,"example10m_small.geo"))
MakeDomain(d2)
# Join the two meshes using Gmsh and then apply a 2D meshing algorithm.
# The small mesh must come before the big mesh in the merging call!!@!!@!
sp.call("gmsh -2 "+
os.path.join(save_path,"example10m_small.geo")+" "+
os.path.join(save_path,"example10m_big.geo")+" -o "+
os.path.join(save_path,"example10m.msh"),shell=True)
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