def initializeModels(self):
print "--Solving Models--"
self.maxdeformation = []
self.numIterations = 20
self.globalTime = 0
self.globalCount = 0
self.timeStep = 3600
self.saveFrequency = 2
self.saveVTKstate = True
initialTransient = False
self.probeIndex = 3240
pc = fvmbaseExt.AMG()
pc.verbosity = 0
defSolver = fvmbaseExt.DirectSolver()
defSolver.preconditioner = pc
defSolver.relativeTolerance = 1e-6
defSolver.absoluteTolerance = 1.e-15
defSolver.nMaxIterations = 50000
defSolver.verbosity = 1
poptions = self.pmodel.getOptions()
poptions.deformationLinearSolver = defSolver
poptions.deformationTolerance = 1.0e-6
poptions.setVar("deformationURF", 1.0)
poptions.printNormalizedResiduals = True
poptions.timeDiscretizationOrder = 2
poptions.transient = True
poptions.scf = 5. / 6.
poptions.setVar('timeStep', self.timeStep)
poptions.setVar('residualStressXX', self.residualStress[0])
poptions.setVar('residualStressYY', self.residualStress[1])
poptions.setVar('residualStressZZ', self.residualStress[2])
### elec solver ###
epc = fvmbaseExt.AMG()
epc.verbosity = 0
elecSolver = fvmbaseExt.BCGStab()
elecSolver.preconditioner = epc
elecSolver.relativeTolerance = 1e-6
elecSolver.nMaxIterations = 1000
elecSolver.maxCoarseLevels = 30
elecSolver.verbosity = 0
eoptions = self.emodel.getOptions()
eoptions.electrostaticsLinearSolver = elecSolver
eoptions.electrostaticsTolerance = 0.5e-5
eoptions.electrostatics_enable = 1
eoptions.chargetransport_enable = 0
eoptions.tunneling = 0
eoptions.ibm_enable = 1
eoptions.transient_enable = False
eoptions.printNormalizedResiduals = True
### initialize models and run ###
self.pmodel.init()
self.emodel.init()
self.dmodel.init()
def solvers(self, timeStep=1e-8):
if self.enablePlateModel == True:
pc = fvmbaseExt.AMG()
pc.verbosity = 0
defSolver = fvmbaseExt.DirectSolver()
defSolver.preconditioner = pc
defSolver.relativeTolerance = 1e-10
defSolver.absoluteTolerance = 1.e-20
defSolver.nMaxIterations = 50000
defSolver.verbosity = 0
poptions = self.pmodel.getOptions()
poptions.deformationLinearSolver = defSolver
poptions.deformationTolerance = 1.0e-3
poptions.setVar("deformationURF", 1.0)
poptions.printNormalizedResiduals = True
poptions.timeDiscretizationOrder = 1
poptions.transient = False
poptions.scf = 5. / 6.
poptions.setVar('timeStep', timeStep)
poptions.variableTimeStep = True
poptions.residualStress = False
poptions.creep = False
if self.enableElecModel == True:
epc = fvmbaseExt.AMG()
epc.verbosity = 0
elecSolver = fvmbaseExt.BCGStab()
elecSolver.preconditioner = epc
elecSolver.relativeTolerance = 1e-4
elecSolver.absoluteTolerance = 1e-20
elecSolver.nMaxIterations = 1000
elecSolver.maxCoarseLevels = 20
elecSolver.verbosity = 0
eoptions = self.emodel.getOptions()
eoptions.electrostaticsLinearSolver = elecSolver
eoptions.electrostaticsTolerance = 1e-3
eoptions.electrostatics_enable = 1
eoptions.chargetransport_enable = 0
eoptions.tunneling = 0
eoptions.ibm_enable = 1
eoptions.transient_enable = False
eoptions.printNormalizedResiduals = True
if self.enableFlowModel == True:
foptions = self.fmodel.getOptions()
foptions.momentumTolerance = 1e-3
foptions.continuityTolerance = 1e-3
foptions.setVar("momentumURF", 0.7)
foptions.setVar("pressureURF", 0.3)
foptions.transient = False
foptions.setVar("timeStep", timeStep)
foptions.printNormalizedResiduals = True
print 'solvers are established'
bc['specifiedXVelocity'] = 1
bc['specifiedYVelocity'] = 0
bc['specifiedZVelocity'] = 0
for id in fluidOutlet:
if id in bcMap:
bc = bcMap[id]
bc.bcType = 'PressureBoundary'
vcMap = fmodel.getVCMap()
for i, vc in vcMap.iteritems():
vc['viscosity'] = 1
vc['density'] = 1
#fluidReader.importFlowBCs(fmodel,fluidMeshes)
#flow solvers
momPC = fvmbaseExt.AMG()
momPC.maxCoarseLevels = 0
momPC.verbosity = 0
momSolver = fvmbaseExt.AMG()
momSolver.smootherType = fvmbaseExt.AMG.JACOBI
#momSolver.preconditioner = momPC
momSolver.relativeTolerance = 1e-1
momSolver.absoluteTolerance = 1e-50
momSolver.nMaxIterations = 100
momSolver.maxCoarseLevels = 0
momSolver.verbosity = 0
contPC = fvmbaseExt.AMG()
contPC.maxCoarseLevels = 0
contPC.verbosity = 0
contSolver = fvmbaseExt.AMG()
bc.bcType = "Symmetry"
vcMap = emodel.getVCMap()
for i, vc in vcMap.iteritems():
vc.vcType = "dielectric"
vc['dielectric_constant'] = dielectric_constant
### flow model and boundary condition ###
flowFields = models.FlowFields('flow')
fmodel = models.FlowModelA(geomFields, flowFields, fluidMeshes)
fluidReader.importFlowBCs(fmodel, fluidMeshes)
### ================================= solvers ===================================###
### elec solver ###
epc = fvmbaseExt.AMG()
epc.verbosity = 0
elecSolver = fvmbaseExt.BCGStab()
elecSolver.preconditioner = epc
elecSolver.relativeTolerance = 1e-3
elecSolver.nMaxIterations = 1000
elecSolver.maxCoarseLevels = 20
elecSolver.verbosity = 0
eoptions = emodel.getOptions()
eoptions.electrostaticsLinearSolver = elecSolver
eoptions.electrostaticsTolerance = 0.5e-5
eoptions.electrostatics_enable = 1
eoptions.chargetransport_enable = 0
eoptions.tunneling = 0
eoptions.ibm_enable = 1
bcLeft.setVar('specifiedMassFraction', 0.0)
bcRight.setVar('specifiedMassFraction', 1.0)
# Neumann on Bottom,Top
bcBottom1.bcType = 'SpecifiedMassFlux'
bcBottom1.setVar('specifiedMassFlux', 0.0)
bcTop1.bcType = 'SpecifiedMassFlux'
bcTop1.setVar('specifiedMassFlux', 0.0)
bcBottom2.bcType = 'SpecifiedMassFlux'
bcBottom2.setVar('specifiedMassFlux', 0.0)
bcTop2.bcType = 'SpecifiedMassFlux'
bcTop2.setVar('specifiedMassFlux', 0.0)
soptions = smodel.getOptions()
solver = fvmbaseExt.AMG()
solver.relativeTolerance = 1e-14 #solver tolerance
solver.absoluteTolerance = 1e-16 #solver tolerance
solver.nMaxIterations = 100
solver.maxCoarseLevels = 30
solver.verbosity = 0
soptions.linearSolver = solver
# model tolerances are only needed for non-linear or unstructured problems
#soptions.relativeTolerance=1e-16
#soptions.absoluteTolerance=1e-16
#smodel.printBCs()
smodel.init()
smodel.advance(1)
bcMapTherm[7].bcType = 'Symmetry'
for i in [5, 6, 7, 8, 9, 10]:
bc = bcMap[i]
bc.bcType = 'Symmetry'
bcMapTherm.bcType = 'Symmetry'
#bc.bcType = 'NoSlipWall'
fmodel.printBCs()
tmodel.printBCs()
vcmap = tmodel.getVCMap()
vcZone = vcmap[meshes[0].getID()]
vcZone['thermalConductivity'] = 1.0E-10
vcZone['density'] = 1000.0
vcZone['specificHeat'] = 1.0
momSolver = fvmbaseExt.AMG()
momSolver.relativeTolerance = 1e-1
momSolver.nMaxIterations = 20
momSolver.maxCoarseLevels = 20
momSolver.verbosity = 0
contSolver = fvmbaseExt.AMG()
#pc = fvmbaseExt.AMG()
#pc.verbosity=0
#contSolver = fvmbaseExt.BCGStab()
#contSolver.preconditioner = pc
contSolver.relativeTolerance = 1e-1
contSolver.nMaxIterations = 20
contSolver.verbosity = 0
contSolver.maxCoarseLevels = 20
bc_xmin.setVar('specifiedTemperature',300.0)
bc_xmax.bcType = 'SpecifiedTemperature'
bc_xmax.setVar('specifiedTemperature',400.0)
# Set solver options
toptions = tmodel.getOptions()
toptions.transient = False
toptions.enthalpyModel = False
toptions.polynomialCp = False
#toptions['latentHeat'] = latentHeat
#toptions['solidTemp'] = solidTemp
#toptions['liquidTemp'] = liquidTemp
#toptions.cpFile = specificHeatFile
toptions.setVar('initialTemperature', 298.0)
pc = fvmbaseExt.AMG()
pc.verbosity = 0
defSolver = fvmbaseExt.BCGStab()
defSolver.preconditioner = pc
defSolver.relativeTolerance = 1.e-10
defSolver.absoluteTolerance = 1.e-10
defSolver.nMaxIteractions = 1000
defSolver.verbosity = 0
toptions.linearSolver = defSolver
tmodel.init()
tmodel.advance(100)
writer = exporters.VTKWriterA(geomFields,meshes,"adaptive_test.vtk",
"TestTemperature",False,0)
writer.init()
writer.writeScalarField(thermalFields.temperature, "Temperature")
def solveModels(self, appliedVoltage):
print "--Solving Models--"
maxdeformation = []
numIterations = 200
globalTime = 0
globalCount = 0
timeStep = 2e-7
saveFrequency = 2
initialTransient = False
probeIndex = 3240
pc = fvmbaseExt.AMG()
pc.verbosity = 0
defSolver = fvmbaseExt.BCGStab()
defSolver.preconditioner = pc
defSolver.relativeTolerance = 1e-6
defSolver.absoluteTolerance = 1.e-15
defSolver.nMaxIterations = 50000
defSolver.verbosity = 1
poptions = self.pmodel.getOptions()
poptions.deformationLinearSolver = defSolver
poptions.deformationTolerance = 1.0e-3
poptions.setVar("deformationURF", 1.0)
poptions.printNormalizedResiduals = True
poptions.timeDiscretizationOrder = 2
poptions.transient = False
poptions.scf = 5. / 6.
poptions.setVar('timeStep', timeStep)
### elec solver ###
epc = fvmbaseExt.AMG()
epc.verbosity = 0
elecSolver = fvmbaseExt.BCGStab()
elecSolver.preconditioner = epc
elecSolver.relativeTolerance = 1e-3
elecSolver.nMaxIterations = 1000
elecSolver.maxCoarseLevels = 20
elecSolver.verbosity = 0
eoptions = self.emodel.getOptions()
eoptions.electrostaticsLinearSolver = elecSolver
eoptions.electrostaticsTolerance = 0.5e-5
eoptions.electrostatics_enable = 1
eoptions.chargetransport_enable = 0
eoptions.tunneling = 0
eoptions.ibm_enable = 1
eoptions.transient_enable = False
eoptions.printNormalizedResiduals = True
### initialize models and run ###
self.pmodel.init()
self.emodel.init()
self.dmodel.init()
ibManager = fvmbaseExt.IBManager(self.geomFields,
self.solidBoundaryMeshes[0],
self.fluidMeshes)
for Voltage in appliedVoltage:
for mesh in self.solidBoundaryMeshes:
faces = mesh.getFaces()
areaMag = self.geomFields.areaMag[faces]
faceCount = faces.getCount()
pot = areaMag.newSizedClone(faceCount)
pota = pot.asNumPyArray()
pota[:] = appliedVoltage
self.elecFields.potential[faces] = pot
sbMeshFaces = self.solidBoundaryMeshes[0].getFaces()
ibManager.fluidNeighborsPerIBFace = 4
ibManager.solidNeighborsPerIBFace = 4
ibManager.fluidNeighborsPerSolidFace = 6
t1 = time.time()
#--------------Timestep Loop --------------------------#
for n in range(0, numIterations):
# checkMarking(globalCount)
# --------------- update IBM -------------------------#
print "*** update IBM at globalCount %i ***" % globalCount
ibManager.update()
self.fluidMetricsCalculator.computeIBInterpolationMatrices(
sbMeshFaces)
self.fluidMetricsCalculator.computeSolidInterpolationMatrices(
sbMeshFaces)
#------------solve electrostatics--------#
print "*** solving electric model at globalCount %i ***" % globalCount
for i in range(0, 20):
self.emodel.computeIBFacePotential(sbMeshFaces)
self.emodel.advance(1)
self.emodel.computeSolidSurfaceForcePerUnitArea(
sbMeshFaces)
#saveVTK(n)
#------------update force on beam ----------#
print "*** update force at globalCount %i ***" % globalCount
sbElecForce = self.elecFields.force[sbMeshFaces].asNumPyArray()
solidMesh = self.solidMeshes[0]
solidCells = solidMesh.getCells()
nCells = solidCells.getCount()
nSelfCells = solidCells.getSelfCount()
nSBFaces = sbMeshFaces.getCount()
if (nSBFaces != 2 * nSelfCells + (nCells - nSelfCells)):
print "the extruded solid boundary mesh has wrong face numbers!"
force = self.plateFields.force[solidCells].asNumPyArray()
thickness = self.plateFields.thickness[
solidCells].asNumPyArray()
force[:] = 0.
### Need to correct~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
thickness[:] = self.beam_thickness
# force on interior cells
for c in range(0, nSelfCells):
botFaceIndex = c
topFaceIndex = c + nSelfCells
force[c] = sbElecForce[botFaceIndex][2] + sbElecForce[
topFaceIndex][2]
# force on boundary cells
for c in range(nSelfCells, nCells):
force[c] = sbElecForce[nSelfCells + c][2]
#pdb.set_trace()
#------------solve structure-------------#
print "*** solving structure model at globalCount %i ***" % globalCount
self.pmodel.advance(1)
self.dmodel.calculateNodeDisplacement()
self.dmodel.deformPlate()
self.solidMetricsCalculator.recalculate_deform()
#------------update solid boundary mesh---------------#
#solidBoundaryMeshes = [m.extrude(1, beam_thickness, True) for m in solidMeshes]
sbNodes = self.solidBoundaryMeshes[0].getNodes()
nSBNodes = sbNodes.getCount()
nodes = self.solidMeshes[0].getNodes()
if nSBNodes != nodes.getCount() * 2:
print "the extruded solid mesh has wrong node number!"
nodeCoord = self.geomFields.coordinate[nodes].asNumPyArray()
bNodeCoord = self.geomFields.coordinate[sbNodes].asNumPyArray()
bMeshCoord = self.solidBoundaryMeshes[0].getNodeCoordinates(
).asNumPyArray()
self.deformation = self.geomFields.nodeDisplacement[
nodes].asNumPyArray()
#pdb.set_trace()
for sbn in range(0, nSBNodes / 2):
bNodeCoord[sbn][
2] = -self.beam_thickness / 2 + nodeCoord[sbn][2]
bMeshCoord[sbn][
2] = -self.beam_thickness / 2 + nodeCoord[sbn][2]
for sbn in range(nSBNodes / 2, nSBNodes):
bNodeCoord[sbn][2] = self.beam_thickness / 2 + nodeCoord[
sbn - nSBNodes / 2][2]
bMeshCoord[sbn][2] = self.beam_thickness / 2 + nodeCoord[
sbn - nSBNodes / 2][2]
#pdb.set_trace()
#solidBoundaryMetricsCalculator = models.MeshMetricsCalculatorA(geomFields,solidBoundaryMeshes)
#solidBoundaryMetricsCalculator.init()
self.solidBoundaryMetricsCalculator.recalculate_deform()
cell = self.solidMeshes[0].getCells()
deform = self.plateFields.deformation[cell].asNumPyArray()
def_min = deform.min(axis=0)
def_min_z = def_min[2]
maxdeformation.append(def_min_z)
if (n != 0):
if ((maxdeformation[n] - maxdeformation[n - 1]) /
maxdeformation[n] < 1e-3):
print "Convergence reached"
break
# -----------------update time --------------------------#
globalTime += timeStep
globalCount += 1
#self.pmodel.updateTime()
#saveVTK(n)
#writeTrace(
if (n % saveFrequency == 0):
writer = exporters.VTKWriterA(
self.geomFields, self.fluidMeshes,
"elecfield-" + str(n) + ".vtk", "fix-fix beam", False,
0)
writer.init()
writer.writeScalarField(self.elecFields.potential,
"potential")
writer.writeVectorField(self.elecFields.electric_field,
"potentialgradient")
writer.finish()
writer1 = exporters.VTKWriterA(
self.geomFields, self.solidMeshes,
"structural-" + str(n) + ".vtk", "Disk", False, 0)
writer1.init()
writer1.writeVectorField(self.plateFields.deformation,
"Deformation")
writer1.finish()
t2 = time.time()
print '\nsolution time = %f' % (t2 - t1)
return maxdeformation[n]
if bcID in bcElecMap:
bc = emodel.getBCMap()[bcID]
# bc.bcType = 'SpecifiedPotential'
# bc.setVar('specifiedPotential',350)
bc.bcType = 'SpecifiedPotentialFlux'
bc.setVar('specifiedPotentialFlux', 0)
#bc.bcType = 'SpecifiedCharge'
#bc.setVar('specifiedCharge',350)
vcMap = smodel.getVCMap()
for i, vc in vcMap.iteritems():
vc['density'] = rho
vc['eta'] = E / (2. * (1 + nu))
vc['eta1'] = nu * E / ((1 + nu) * (1 - 1.0 * nu))
pc = fvmbaseExt.AMG()
pc.verbosity = 0
defSolver = fvmbaseExt.DirectSolver()
defSolver.preconditioner = pc
defSolver.relativeTolerance = 1e-5
defSolver.absoluteTolerance = 1.e-30
defSolver.nMaxIterations = 60
defSolver.verbosity = 1
elecSolver = fvmbaseExt.AMG()
elecSolver.relativeTolerance = 1e-3
elecSolver.nMaxIterations = 100
elecSolver.maxCoarseLevels = 20
elecSolver.verbosity = 1
soptions = smodel.getOptions()
bc6.setVar('specifiedTemperature', 0)
# set viscosity and density, this is done per mesh since each mesh has its own VC object
vcMap = tmodel.getVCMap()
for vc in vcMap.values():
# vc.setVar('density',1.0)
vc.setVar('thermalConductivity', 1.0)
#########################
conn = meshes[0].getCellCells()
semi_bandwidth = 6
#spike_storage = fvmbaseExt.SpikeStorage(conn, semi_bandwidth)
#pc = fvmbaseExt.SpikeSolver(spike_storage)
#pc = fvmbaseExt.JacobiSolver()
#pc = fvmbaseExt.ILU0Solver()
pc = fvmbaseExt.AMG()
#pc.setMergeLEvelSize(40000)
#pc.verbosity=3
tSolver = fvmbaseExt.BCGStab()
#tSolver = fvmbaseExt.JacobiSolver()
tSolver.preconditioner = pc
tSolver.relativeTolerance = 1e-4
tSolver.nMaxIterations = 200000
tSolver.verbosity = 3
#####################
tSolver = fvmbaseExt.AMG()
#tSolver.smootherType = fvmbaseExt.AMG.JACOBI
tSolver.relativeTolerance = 1e-9
tSolver.nMaxIterations = 200000
bc3.bcType = 'NoSlipWall'
bc3.setVar('specifiedXVelocity', 1)
## set viscosity and density, this is done per mesh since each mesh has its own VC object
vcMap = fmodel.getVCMap()
for vc in vcMap.values():
vc.setVar('density', 1.0)
vc.setVar('viscosity', 0.1)
#########################
conn = meshes[0].getCellCells()
semi_bandwidth_mom = 3
#spike_storage_mom = fvmbaseExt.SpikeStorage(conn, semi_bandwidth_mom)
#pcMom = fvmbaseExt.SpikeSolver(spike_storage_mom)
#pcMom = fvmbaseExt.JacobiSolver()
#pcMom = fvmbaseExt.ILU0Solver()
pcMom = fvmbaseExt.AMG()
pcMom.verbosity = 0
momSolver = fvmbaseExt.AMG()
#momSolver.preconditioner=pcMom
momSolver.relativeTolerance = 1e-1
momSolver.nMaxIterations = 20
momSolver.maxCoarseLevels = 30
momSolver.verbosity = 0
if MPI.COMM_WORLD.Get_rank() == 0:
momSolver.verbosity = 0
#########################
semi_bandwidth_con = 3
#spike_storage_con = fvmbaseExt.SpikeStorage(conn, semi_bandwidth_con)
#pcCon = fvmbaseExt.SpikeSolver(spike_storage_con)
bc3.bcType = 'NoSlipWall'
bc3.setVar('specifiedXVelocity', 1)
## set viscosity and density, this is done per mesh since each mesh has its own VC object
vcMap = fmodel.getVCMap()
for vc in vcMap.values():
vc.setVar('density', 1.0)
vc.setVar('viscosity', 0.1)
#########################
conn = meshes[0].getCellCells()
semi_bandwidth_mom = 10
spike_storage_mom = fvmbaseExt.SpikeStorage(conn, semi_bandwidth_mom)
pcMom = fvmbaseExt.SpikeSolver(spike_storage_mom)
#pcMom = fvmbaseExt.JacobiSolver()
#pcMom = fvmbaseExt.ILU0Solver()
pcMomWriter = fvmbaseExt.AMG()
pcMom.verbosity = 0
momSolver = fvmbaseExt.BCGStab()
momSolver.preconditioner = pcMom
momSolver.relativeTolerance = 1e-1
momSolver.nMaxIterations = 20
momSolver.maxCoarseLevels = 30
momSolver.verbosity = 0
if MPI.COMM_WORLD.Get_rank() == 0:
momSolver.verbosity = 0
#########################
semi_bandwidth_con = 10
spike_storage_con = fvmbaseExt.SpikeStorage(conn, semi_bandwidth_con)
pcCon = fvmbaseExt.SpikeSolver(spike_storage_con)
bc3 = fmodel.getBCMap()[3]
bc3.bcType = 'NoSlipWall'
bc3.setVar('specifiedXVelocity', 1)
## set viscosity and density, this is done per mesh since each mesh has its own VC object
vcMap = fmodel.getVCMap()
for vc in vcMap.values():
vc.setVar('density', 1.0)
vc.setVar('viscosity', 0.1)
#########################
conn = meshes[0].getCellCells()
semi_bandwidth_mom = 3
#spike_storage_mom = fvmbaseExt.SpikeStorage(conn, semi_bandwidth_mom)
#pcMom = fvmbaseExt.SpikeSolver(spike_storage_mom)
#pcMom = fvmbaseExt.JacobiSolver()
pcMom = fvmbaseExt.AMG()
pcMom.verbosity = 0
momSolver = fvmbaseExt.CG()
momSolver.preconditioner = pcMom
momSolver.relativeTolerance = 1e-1
momSolver.nMaxIterations = 20
momSolver.maxCoarseLevels = 30
momSolver.verbosity = 0
if MPI.COMM_WORLD.Get_rank() == 0:
momSolver.verbosity = 0
#########################
semi_bandwidth_con = 3
#spike_storage_con = fvmbaseExt.SpikeStorage(conn, semi_bandwidth_con)
#pcCon = fvmbaseExt.SpikeSolver(spike_storage_con)
elec_constants['electron_capture_cross'] = electron_capture_cross elec_constants['electron_mobility'] = electron_mobility elec_constants['electron_saturation_velocity'] = electron_saturation_velocity elec_constants['substrate_id'] = botID elec_constants['membrane_id'] = topID elec_constants['nLevel'] = nLevel elec_constants['normal_direction'] = normal_direction elec_constants['nTrap'] = nTrap elec_constants.electron_trapdepth.push_back(electron_trapdepth) elec_constants.electron_trapdensity.push_back(electron_trapdensity) elec_constants.electron_trapdepth.push_back(1.5) elec_constants.electron_trapdensity.push_back(electron_trapdensity) ### setup linear solve options ### pPC = fvmbaseExt.AMG() pPC.verbosity = 0 pSolver = fvmbaseExt.BCGStab() pSolver.preconditioner = pPC pSolver.relativeTolerance = 1e-20 pSolver.nMaxIterations = 100 pSolver.maxCoarseLevels = 20 pSolver.absoluteTolerance = 1e-50 pSolver.verbosity = 0 elec_options.electrostaticsLinearSolver = pSolver cPC = fvmbaseExt.AMG() cPC.verbosity = 0 cSolver = fvmbaseExt.BCGStab() cSolver.preconditioner = cPC cSolver.relativeTolerance = 1e-20
def RunSim(xmax,ymax,zmax,imax,jmax,kmax,old_values,laser_file):
#pdb.set_trace()
mesh = generateBoxMesh(xmax, ymax, zmax, imax, jmax, kmax)
meshes = (mesh,)
geomFields = models.GeomFields('geom')
metricsCalculator = models.MeshMetricsCalculatorA(geomFields,meshes)
metricsCalculator.init()
thermalFields = models.ThermalFields('temperature')
tmodel = models.ThermalModelA(geomFields,thermalFields,meshes)
bcmap = tmodel.getBCMap()
vcmap = tmodel.getVCMap()
global time
global numTimeSteps
global curr_cycle
global v_laser
global laser_pos
global laser_pos_next
global int_time
vcZone = vcmap[mesh.getID()]
# Set boundary conditions and material properties
vcZone['thermalConductivity'] = thermalConductivity
vcZone['density'] = density
# vcZone['specificHeat'] = 1546
xmin_id = 1
xmax_id = 2
ymin_id = 3
ymax_id = 4
zmin_id = 5
zmax_id = 6
bc_xmin = bcmap[xmin_id]
bc_xmax = bcmap[xmax_id]
bc_ymin = bcmap[ymin_id]
bc_ymax = bcmap[ymax_id]
bc_zmin = bcmap[zmin_id]
bc_zmax = bcmap[zmax_id]
bc_zmax.bcType = 'Mixed'
bc_zmax.setVar('farFieldTemperature',initTemp)
bc_zmax.setVar('surfaceEmissivity',-1.0)
bc_zmax.setVar('convectiveCoefficient',-30)
bc_zmin.bcType = 'Convective'
bc_zmin.setVar('farFieldTemperature',initTemp)
bc_zmin.setVar('convectiveCoefficient',-1332)
# bc_zmin.setVar('specifiedHeatFlux',0)
bc_ymin.bcType = 'SpecifiedTemperature'
bc_ymin.setVar('specifiedTemperature',298.0)
bc_ymax.bcType = 'SpecifiedTemperature'
bc_ymax.setVar('specifiedTemperature',298.0)
bc_xmin.bcType = 'SpecifiedTemperature'
bc_xmin.setVar('specifiedTemperature',298.0)
bc_xmax.bcType = 'SpecifiedTemperature'
bc_xmax.setVar('specifiedTemperature',298.0)
# Set solver options
toptions = tmodel.getOptions()
toptions.transient = True
toptions.enthalpyModel = True
toptions.polynomialCp = True
toptions['latentHeat'] = latentHeat
toptions['solidTemp'] = solidTemp
toptions['liquidTemp'] = liquidTemp
toptions.cpFile = specificHeatFile
toptions.setVar('initialTemperature', initTemp)
pc = fvmbaseExt.AMG()
pc.verbosity = 0
defSolver = fvmbaseExt.BCGStab()
defSolver.preconditioner = pc
defSolver.relativeTolerance = 1.e-10
defSolver.absoluteTolerance = 1.e-10
defSolver.nMaxIteractions = 1000
defSolver.verbosity = 0
toptions.linearSolver = defSolver
tmodel.init()
cells = mesh.getCells()
ncells = cells.getSelfCount()
old_ncells, old_temp, old_tempN1, old_enth, old_enthN1, old_enthInv, old_dHdT, old_meltFrac = old_values
temp = thermalFields.temperature
tempN1 = thermalFields.temperatureN1
enth = thermalFields.enthalpy
enthN1 = thermalFields.enthalpyN1
enthInv = thermalFields.enthalpyInverse
dHdT = thermalFields.dHdT
meltFrac = thermalFields.meltFrac
temp = temp[cells].asNumPyArray()
tempN1 = tempN1[cells].asNumPyArray()
enth = enth[cells].asNumPyArray()
enthN1 = enthN1[cells].asNumPyArray()
enthInv = enthInv[cells].asNumPyArray()
dHdT = dHdT[cells].asNumPyArray()
meltFrac = meltFrac[cells].asNumPyArray()
##recover data from previous mesh if it exists
if(old_ncells != 0):
for c in range(old_ncells):
temp[c] = old_temp[c]
tempN1[c] = old_tempN1[c]
enth[c] = old_enth[c]
enthN1[c] = old_enthN1[c]
enthInv[c] = old_enthInv[c]
dHdT[c] = old_dHdT[c]
meltFrac[c] = old_meltFrac[c]
nodes=mesh.getCellNodes()
NodeCoord=mesh.getNodeCoordinates().asNumPyArray()
CellCoord=geomFields.coordinate[cells].asNumPyArray()
laser_width = 3*laser_diam/4/2.146
laser_path = open(laser_file,'r')
if (curr_cycle == -1):
curr_cycle = 1
line = laser_path.readline()
words = line.split()
if(time != float(words[0])):
raise NameError('Time does not match start time in laser_file')
laser_pos.x = float(words[1])
laser_pos.y = float(words[2])
laser_power = float(words[3])
line = laser_path.readline()
words = line.split()
int_time = float(words[0])-time
v_laser = [(float(words[1])-laser_pos.x)/int_time,(float(words[2])-laser_pos.y)/int_time]
laser_power_next = float(words[3])
else:
line = laser_path.readline()
words = line.split()
laser_power = float(words[3])
if (float(words[0]) > time):
raise NameError('Current time not within laser_file for restart')
else:
while(True):
line = laser_path.readline()
words = line.split()
if (float(words[0]) > time):
int_time = float(words[0])-time
v_laser = [(float(words[1])-laser_pos.x)/int_time,(float(words[2])-laser_pos.y)/int_time]
laser_power_next = float(words[3])
break
else:
laser_power = float(words[3])
f = open('laser_position','a')
f.write(str(time) + ' ' + str(numTimeSteps) + ' ' + str(laser_pos.x) + ' ' + str(laser_pos.y) + '\n')
MeltFracField = thermalFields.meltFrac
meltFracArray = MeltFracField[cells].asNumPyArray()
for c in range(ncells):
lim = getNodeCoords(c,CellCoord,NodeCoord,nodes)
if(lim[0] >= 0.01) and (lim[1] <= 0.09) and (lim[2] >= 0.01) and (lim[3] <= 0.09) and (lim[5] <= 0.0001):
meltFracArray[c] = 1.0
else:
meltFracArray[c] = 0.0
while(True):
#find the timestep.
if (int_time <= maxTimeStep):
timeStep = int_time
else:
timeStep = maxTimeStep
laser_pos_next.x = laser_pos.x+v_laser[0]*timeStep
laser_pos_next.y = laser_pos.y+v_laser[1]*timeStep
int_time = int_time - timeStep
toptions.setVar('timeStep',timeStep)
print "Current Time: " + str(time)
print "Time Step: " + str(timeStep)
laser_rect = getLaserRect(laser_pos,laser_pos_next,v_laser,laser_width)
SourceField = thermalFields.source
sourceArray = SourceField[cells].asNumPyArray()
CondField = thermalFields.conductivity
condArray = CondField[cells].asNumPyArray()
TempField = thermalFields.temperature
tempArray = TempField[cells].asNumPyArray()
MeltFracField = thermalFields.meltFrac
meltFracArray = MeltFracField[cells].asNumPyArray()
for c in range(ncells):
#set source term
lim = getNodeCoords(c,CellCoord,NodeCoord,nodes)
if ((lim[5]-zlen) < -1/beta*math.log(0.01*beta/(1-R))):
source = 0
elif (cellLaserOverlap(lim,laser_pos,laser_pos_next,laser_width,
laser_rect)):
ts = getTimes(lim,laser_pos,laser_width,v_laser,timeStep)
if (len(ts) == 2):
source = GaussLegendreQuadrature(laserSource,xs,Ws,ts[0],ts[1],lim,laser_pos,laser_power,v_laser)/timeStep
elif (len(ts) == 0):
source = 0.0
else:
raise NameError('Bad number of solutions to laser overlap cell ' + str(c))
else:
source = 0
sourceArray[c] = source
##Set conductivity based on previous temperature
solidCond = condFunction(tempArray[c])
condArray[c] = condMeltFunction(solidCond,meltFracArray[c])
tmodel.advance(maxIterPerTimeStep)
##Picard iterate out any temperature dependent conductivity
picardIters = 1
urf = 0.9
while(picardIters < 200):
for c in range(ncells):
solidCond = condFunction(tempArray[c])
if((meltFracArray[c] >= 1.0) or (tempArray[c] >= liquidTemp)):
condArray[c] = (1.0-urf)*condArray[c] + urf*solidCond
else:
condArray[c] = (1.0-urf)*condArray[c] + urf*condMeltFunction(solidCond,
max(meltFracArray[c],(tempArray[c]-solidTemp)/
(liquidTemp-solidTemp)))
picardIters = picardIters + 1
prev_temp = np.copy(tempArray)
tmodel.advance(maxIterPerTimeStep)
err_norm = np.linalg.norm(prev_temp-tempArray)/np.linalg.norm(tempArray)
print err_norm
if (err_norm < 1e-4*urf):
break
if (picardIters == 20):
print 'Picard Iterations did not converge after 20 iterations. Decreasing urf to 0.8'
urf = 0.8
if (picardIters == 60):
print 'Picard Iterations did not converge after 60 iterations. Decreasing urf to 0.7'
urf = 0.7
if (picardIters == 120):
print 'Picard Iterations did not converge after 120 iterations. Decreasing urf to 0.6'
urf = 0.6
else:
raise NameError('Picard iterations did not converge after 200 iterations')
##Update time
tmodel.updateTime()
time = time + timeStep
# Update laser position
laser_pos.x = laser_pos_next.x
laser_pos.y = laser_pos_next.y
f.write(str(time) + ' ' + str(numTimeSteps) + ' ' + str(laser_pos.x) + ' ' + str(laser_pos.y) + '\n')
# Output data for current timestep
if((numTimeSteps % outFreq) == 0):
filename = outfilebase + '_' + str(numTimeSteps) + '.vtk'
writer = exporters.VTKWriterA(geomFields,meshes,filename,
"TestTemperature",False,0)
writer.init()
writer.writeScalarField(thermalFields.temperature, "Temperature")
writer.writeScalarField(thermalFields.meltFrac, "MeltFraction")
#writer.writeScalarField(thermalFields.conductivity, "Conductivity")
writer.finish()
write_restart_file((ncells, temp, tempN1, enth, enthN1, enthInv, dHdT, meltFrac))
numTimeSteps = numTimeSteps + 1
if(int_time == 0.0):
laser_power = laser_power_next
line = laser_path.readline()
if (line == ''):
break
else:
words = line.split()
if (len(words) == 0):
break
else:
int_time = float(words[0])-time
v_laser = [(float(words[1])-laser_pos.x)/int_time,(float(words[2])-laser_pos.y)/int_time]
laser_power_next = float(words[3])
f.close()
return_temp = np.copy(temp)
return_tempN1 = np.copy(tempN1)
return_enth = np.copy(enth)
return_enthN1 = np.copy(enthN1)
return_enthInv = np.copy(enthInv)
return_dHdT = np.copy(dHdT)
return_meltFrac = np.copy(meltFrac)
return (ncells, return_temp, return_tempN1, return_enth,
return_enthN1, return_enthInv, return_dHdT, return_meltFrac)
