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  • Committer: Package Import Robot
  • Author(s): Anton Gladky
  • Date: 2011-11-18 21:47:18 UTC
  • Revision ID: package-import@ubuntu.com-20111118214718-4ysqm3dhpqwdd7gd
Tags: upstream-0.99~bzr106
Import upstream version 0.99~bzr106

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examples/gengeo_crack.py
 
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#############################################################
 
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##                                                         ##
 
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## Copyright (c) 2007-2011 by The University of Queensland ##
 
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## Earth Systems Science Computational Centre (ESSCC)      ##
 
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## http://www.uq.edu.au/esscc                              ##
 
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##                                                         ##
 
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## Primary Business: Brisbane, Queensland, Australia       ##
 
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## Licensed under the Open Software License version 3.0    ##
 
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## http://www.opensource.org/licenses/osl-3.0.php          ##
 
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##                                                         ##
 
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#############################################################
 
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from gengeo import *
 
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#An example python script to generate a bonded rectangle of particles with a discrete fracture network included
 
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width = 50.0
 
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height = width
 
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# Define region extremities:
 
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minPoint = Vector3(0.0,0.0,0.0)
 
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maxPoint = Vector3(width,height,0.0)
 
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# Define the geometrical constraints for packing
 
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#       (e.g. lines bordering a rectangular region in 2D)
 
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# QUESTION: Is there a particular order for defining endpoints of lines?
 
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top_line = Line2D (
 
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   startPoint = Vector3(width,0.0,0.0),
 
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   endPoint = minPoint
 
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)
 
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bottom_line = Line2D (
 
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   startPoint = maxPoint,
 
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   endPoint = Vector3(0.0,height,0.0)
 
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)
 
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left_line = Line2D (
 
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   startPoint = Vector3(width,0.0,0.0),
 
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   endPoint = maxPoint
 
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)
 
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right_line = Line2D (
 
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   startPoint = minPoint,
 
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   endPoint = Vector3(0.0,height,0.0)
 
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)
 
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# Define the Volume to be filled with spheres:
 
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#       (e.g. a BoxWithLines2D)
 
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box = BoxWithLines2D (
 
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   minPoint = minPoint,
 
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   maxPoint = maxPoint
 
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)
 
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box.addLine(top_line)
 
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box.addLine(bottom_line)
 
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box.addLine(left_line)
 
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box.addLine(right_line)
 
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# Create a multi-group neighbour table to contain the particles:
 
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mntable = MNTable2D (
 
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   minPoint = minPoint,
 
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   maxPoint = maxPoint,
 
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   gridSize = 2.5
 
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)
 
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# Fill the volume with particles:
 
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packer = InsertGenerator2D (
 
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   minRadius = 0.1,
 
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   maxRadius = 1.0,
 
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   insertFails = 10000,
 
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   maxIterations = 10000,
 
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   tolerance = 1.0e-6
 
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)
 
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packer.generatePacking( volume = box, ntable = mntable, tag = 0)
 
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# create bonds between neighbouring particles:
 
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mntable.generateBonds(
 
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   tolerance = 1.0e-5,
 
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   bondID = 0
 
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)
 
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#Add a discrete fracture network
 
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brkLine = LineSegment2D (
 
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   startPoint = Vector3(0.4*width,0.4*height,0.0),
 
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   endPoint = Vector3(0.6*width,0.6*height,0.0)
 
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)
 
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mntable.breakBondsAlongLineSegment(
 
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   lineSegment = brkLine,
 
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   distance = 0.25,
 
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   tag = 0
 
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)
 
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# write a geometry file
 
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mntable.write(
 
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   fileName = "temp/geo_crack.geo",
 
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   outputStyle = 1
 
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)
 
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# write a vtk file
 
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mntable.write(
 
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   fileName = "temp/geo_crack.vtu",
 
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   outputStyle = 2
 
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)