1 | import numpy
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2 | from arch import *
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3 | from SetIceSheetBC import SetIceSheetBC
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4 |
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5 | #Ok, start defining model parameters here
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6 |
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7 | print " creating thickness"
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8 | data = numpy.array(archread('../Data/ISMIPE.arch','data'));
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9 | md.geometry.surface=numpy.zeros((md.mesh.numberofvertices))
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10 | md.geometry.base=numpy.zeros((md.mesh.numberofvertices))
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11 | for i in xrange(0,md.mesh.numberofvertices):
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12 | y=md.mesh.y[i]
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13 | point1=numpy.floor(y/100.)
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14 | point2=numpy.minimum(point1+1,50)
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15 | coeff=(y-(point1)*100.)/100.
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16 | md.geometry.base[i]=(1.-coeff)*data[point1,1]+coeff*data[point2,1]
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17 | md.geometry.surface[i]=(1.-coeff)*data[point1,2]+coeff*data[point2,2]
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18 |
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19 | md.geometry.thickness=md.geometry.surface-md.geometry.base
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20 | md.geometry.thickness[numpy.nonzero(numpy.logical_not(md.geometry.thickness))]=0.01
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21 | md.geometry.base=md.geometry.surface-md.geometry.thickness
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22 |
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23 | print " creating drag"
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24 | md.friction.coefficient=numpy.zeros((md.mesh.numberofvertices))
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25 | md.friction.p=numpy.ones((md.mesh.numberofelements))
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26 | md.friction.q=numpy.ones((md.mesh.numberofelements))
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27 |
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28 | print " creating flow law parameter"
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29 | md.materials.rheology_B=6.8067*10**7*numpy.ones((md.mesh.numberofvertices))
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30 | md.materials.rheology_n=3.*numpy.ones((md.mesh.numberofelements))
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31 |
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32 | print " boundary conditions for stressbalance model:"
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33 | #Create node on boundary first (because we can not use mesh)
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34 | md=SetIceSheetBC(md)
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