| 1 | from fielddisplay import fielddisplay
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| 2 | from project3d import project3d
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| 3 | from checkfield import checkfield
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| 4 | from WriteData import WriteData
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| 5 |
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| 6 | class matenhancedice(object):
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| 7 | """
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| 8 | MATICE class definition
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| 9 |
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| 10 | Usage:
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| 11 | matenhancedice=matenhancedice();
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| 12 | """
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| 13 |
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| 14 | def __init__(self): # {{{
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| 15 | self.rho_ice = 0.
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| 16 | self.rho_water = 0.
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| 17 | self.rho_freshwater = 0.
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| 18 | self.mu_water = 0.
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| 19 | self.heatcapacity = 0.
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| 20 | self.latentheat = 0.
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| 21 | self.thermalconductivity = 0.
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| 22 | self.temperateiceconductivity = 0.
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| 23 | self.effectiveconductivity_averaging = 0.
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| 24 | self.meltingpoint = 0.
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| 25 | self.beta = 0.
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| 26 | self.mixed_layer_capacity = 0.
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| 27 | self.thermal_exchange_velocity = 0.
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| 28 | self.rheology_E = float('NaN')
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| 29 | self.rheology_B = float('NaN')
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| 30 | self.rheology_n = float('NaN')
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| 31 | self.rheology_law = ''
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| 32 |
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| 33 | #giaivins:
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| 34 | self.lithosphere_shear_modulus = 0.
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| 35 | self.lithosphere_density = 0.
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| 36 | self.mantle_shear_modulus = 0.
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| 37 | self.mantle_density = 0.
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| 38 |
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| 39 | #SLR
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| 40 | self.earth_density= 0 # average density of the Earth, (kg/m^3)
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| 41 |
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| 42 | self.setdefaultparameters()
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| 43 | #}}}
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| 44 | def __repr__(self): # {{{
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| 45 | string=" Materials:"
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| 46 |
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| 47 | string="%s\n%s"%(string,fielddisplay(self,"rho_ice","ice density [kg/m^3]"))
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| 48 | string="%s\n%s"%(string,fielddisplay(self,"rho_water","water density [kg/m^3]"))
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| 49 | string="%s\n%s"%(string,fielddisplay(self,"rho_freshwater","fresh water density [kg/m^3]"))
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| 50 | string="%s\n%s"%(string,fielddisplay(self,"mu_water","water viscosity [N s/m^2]"))
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| 51 | string="%s\n%s"%(string,fielddisplay(self,"heatcapacity","heat capacity [J/kg/K]"))
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| 52 | string="%s\n%s"%(string,fielddisplay(self,"thermalconductivity","ice thermal conductivity [W/m/K]"))
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| 53 | string="%s\n%s"%(string,fielddisplay(self,"temperateiceconductivity","temperate ice thermal conductivity [W/m/K]"))
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| 54 | string="%s\n%s"%(string,fielddisplay(self,"effectiveconductivity_averaging","computation of effective conductivity: (0) arithmetic mean, (1) harmonic mean, (2) geometric mean (default)"))
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| 55 | string="%s\n%s"%(string,fielddisplay(self,"meltingpoint","melting point of ice at 1atm in K"))
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| 56 | string="%s\n%s"%(string,fielddisplay(self,"latentheat","latent heat of fusion [J/m^3]"))
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| 57 | string="%s\n%s"%(string,fielddisplay(self,"beta","rate of change of melting point with pressure [K/Pa]"))
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| 58 | string="%s\n%s"%(string,fielddisplay(self,"mixed_layer_capacity","mixed layer capacity [W/kg/K]"))
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| 59 | string="%s\n%s"%(string,fielddisplay(self,"thermal_exchange_velocity","thermal exchange velocity [m/s]"))
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| 60 | string="%s\n%s"%(string,fielddisplay(self,"rheology_E","enhancement factor"))
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| 61 | string="%s\n%s"%(string,fielddisplay(self,"rheology_B","flow law parameter [Pa s^(1/n)]"))
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| 62 | string="%s\n%s"%(string,fielddisplay(self,"rheology_n","Glen's flow law exponent"))
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| 63 | string="%s\n%s"%(string,fielddisplay(self,"rheology_law","law for the temperature dependance of the rheology: 'None', 'BuddJacka', 'Cuffey', 'CuffeyTemperate', 'Paterson', 'Arrhenius' or 'LliboutryDuval'"))
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| 64 | string="%s\n%s"%(string,fielddisplay(self,"lithosphere_shear_modulus","Lithosphere shear modulus [Pa]"))
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| 65 | string="%s\n%s"%(string,fielddisplay(self,"lithosphere_density","Lithosphere density [g/cm^-3]"))
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| 66 | string="%s\n%s"%(string,fielddisplay(self,"mantle_shear_modulus","Mantle shear modulus [Pa]"))
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| 67 | string="%s\n%s"%(string,fielddisplay(self,"mantle_density","Mantle density [g/cm^-3]"))
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| 68 | string="%s\n%s"%(string,fielddisplay(self,"earth_density","Mantle density [kg/m^-3]"))
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| 69 |
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| 70 | return string
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| 71 | #}}}
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| 72 | def extrude(self,md): # {{{
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| 73 | self.rheology_E=project3d(md,'vector',self.rheology_E,'type','node')
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| 74 | self.rheology_B=project3d(md,'vector',self.rheology_B,'type','node')
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| 75 | self.rheology_n=project3d(md,'vector',self.rheology_n,'type','element')
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| 76 | return self
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| 77 | #}}}
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| 78 | def setdefaultparameters(self): # {{{
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| 79 | #ice density (kg/m^3)
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| 80 | self.rho_ice=917.
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| 81 |
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| 82 | #ocean water density (kg/m^3)
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| 83 | self.rho_water=1023.
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| 84 |
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| 85 | #fresh water density (kg/m^3)
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| 86 | self.rho_freshwater=1000.
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| 87 |
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| 88 | #water viscosity (N.s/m^2)
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| 89 | self.mu_water=0.001787
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| 90 |
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| 91 | #ice heat capacity cp (J/kg/K)
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| 92 | self.heatcapacity=2093.
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| 93 |
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| 94 | #ice latent heat of fusion L (J/kg)
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| 95 | self.latentheat=3.34*10**5
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| 96 |
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| 97 | #ice thermal conductivity (W/m/K)
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| 98 | self.thermalconductivity=2.4
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| 99 |
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| 100 | #temperate ice thermal conductivity (W/m/K)
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| 101 | self.temperateiceconductivity=0.24
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| 102 |
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| 103 | #computation of effective conductivity
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| 104 | self.effectiveconductivity_averaging=2
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| 105 |
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| 106 | #the melting point of ice at 1 atmosphere of pressure in K
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| 107 | self.meltingpoint=273.15
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| 108 |
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| 109 | #rate of change of melting point with pressure (K/Pa)
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| 110 | self.beta=9.8*10**-8
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| 111 |
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| 112 | #mixed layer (ice-water interface) heat capacity (J/kg/K)
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| 113 | self.mixed_layer_capacity=3974.
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| 114 |
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| 115 | #thermal exchange velocity (ice-water interface) (m/s)
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| 116 | self.thermal_exchange_velocity=1.00*10**-4
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| 117 |
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| 118 | #Rheology law: what is the temperature dependence of B with T
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| 119 | #available: none, paterson and arrhenius
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| 120 | self.rheology_law='Paterson'
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| 121 |
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| 122 | # GIA:
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| 123 | self.lithosphere_shear_modulus = 6.7*10**10 # (Pa)
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| 124 | self.lithosphere_density = 3.32 # (g/cm^-3)
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| 125 | self.mantle_shear_modulus = 1.45*10**11 # (Pa)
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| 126 | self.mantle_density = 3.34 # (g/cm^-3)
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| 127 |
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| 128 | #SLR
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| 129 | self.earth_density= 5512 #average density of the Earth, (kg/m^3)
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| 130 |
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| 131 | return self
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| 132 | #}}}
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| 133 | def checkconsistency(self,md,solution,analyses): # {{{
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| 134 | md = checkfield(md,'fieldname','materials.rho_ice','>',0)
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| 135 | md = checkfield(md,'fieldname','materials.rho_water','>',0)
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| 136 | md = checkfield(md,'fieldname','materials.rho_freshwater','>',0)
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| 137 | md = checkfield(md,'fieldname','materials.mu_water','>',0)
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| 138 | md = checkfield(md,'fieldname','materials.rheology_E','>',0,'timeseries',1,'NaN',1,'Inf',1)
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| 139 | md = checkfield(md,'fieldname','materials.rheology_B','>',0,'timeseries',1,'NaN',1,'Inf',1)
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| 140 | md = checkfield(md,'fieldname','materials.rheology_n','>',0,'size',[md.mesh.numberofelements])
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| 141 | md = checkfield(md,'fieldname','materials.rheology_law','values',['None','BuddJacka','Cuffey','CuffeyTemperate','Paterson','Arrhenius','LliboutryDuval'])
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| 142 | md = checkfield(md,'fieldname','materials.effectiveconductivity_averaging','numel',[1],'values',[0 1 2])
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| 143 |
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| 144 | if 'GiaAnalysis' in analyses:
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| 145 | md = checkfield(md,'fieldname','materials.lithosphere_shear_modulus','>',0,'numel',1)
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| 146 | md = checkfield(md,'fieldname','materials.lithosphere_density','>',0,'numel',1)
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| 147 | md = checkfield(md,'fieldname','materials.mantle_shear_modulus','>',0,'numel',1)
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| 148 | md = checkfield(md,'fieldname','materials.mantle_density','>',0,'numel',1)
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| 149 | if 'SealevelriseAnalysis' in analyses:
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| 150 | md = checkfield(md,'fieldname','materials.earth_density','>',0,'numel',1)
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| 151 | return md
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| 152 | # }}}
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| 153 | def marshall(self,prefix,md,fid): # {{{
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| 154 | WriteData(fid,prefix,'name','md.materials.type','data',4,'format','Integer')
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| 155 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','rho_ice','format','Double')
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| 156 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','rho_water','format','Double')
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| 157 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','rho_freshwater','format','Double')
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| 158 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','mu_water','format','Double')
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| 159 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','heatcapacity','format','Double')
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| 160 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','latentheat','format','Double')
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| 161 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','thermalconductivity','format','Double')
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| 162 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','temperateiceconductivity','format','Double')
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| 163 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','effectiveconductivity_averaging','format','Integer')
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| 164 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','meltingpoint','format','Double')
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| 165 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','beta','format','Double')
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| 166 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','mixed_layer_capacity','format','Double')
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| 167 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','thermal_exchange_velocity','format','Double')
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| 168 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','rheology_E','format','DoubleMat','mattype',1,'timeserieslength',md.mesh.numberofvertices+1,'yts',md.constants.yts)
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| 169 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','rheology_B','format','DoubleMat','mattype',1,'timeserieslength',md.mesh.numberofvertices+1,'yts',md.constants.yts)
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| 170 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','rheology_n','format','DoubleMat','mattype',2)
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| 171 | WriteData(fid,prefix,'data',self.rheology_law,'name','md.materials.rheology_law','format','String')
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| 172 |
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| 173 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','lithosphere_shear_modulus','format','Double')
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| 174 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','lithosphere_density','format','Double','scale',10^3)
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| 175 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','mantle_shear_modulus','format','Double')
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| 176 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','mantle_density','format','Double','scale',10^3)
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| 177 | WriteData(fid,prefix,'object',self,'class','materials','fieldname','earth_density','format','Double')
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| 178 | # }}}
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