def createFields( runTime, mesh ):
ext_Info() << "Reading field U\n" << nl
from Foam.finiteVolume import volVectorField
from Foam.OpenFOAM import IOobject, fileName, word
U = volVectorField( IOobject( word( "U" ),
fileName( runTime.timeName() ),
mesh,
IOobject.MUST_READ,
IOobject.AUTO_WRITE ),
mesh )
from Foam.finiteVolume import volSymmTensorField
from Foam.OpenFOAM import dimensionedSymmTensor, symmTensor
from Foam.OpenFOAM import dimForce, dimArea
sigma = volSymmTensorField( IOobject( word( "sigma" ),
fileName( runTime.timeName() ),
mesh,
IOobject.READ_IF_PRESENT,
IOobject.AUTO_WRITE ),
mesh,
dimensionedSymmTensor( word( "zero" ), dimForce/dimArea, symmTensor.zero)
)
from materialModels.rheologyModel import rheologyModel
rheology = rheologyModel( sigma )
return U, sigma, rheology
def createFields(runTime, mesh):
ext_Info() << "Reading field U\n" << nl
from Foam.finiteVolume import volVectorField
from Foam.OpenFOAM import IOobject, fileName, word
U = volVectorField(
IOobject(word("U"), fileName(runTime.timeName()), mesh,
IOobject.MUST_READ, IOobject.AUTO_WRITE), mesh)
from Foam.finiteVolume import volSymmTensorField
from Foam.OpenFOAM import dimensionedSymmTensor, symmTensor
from Foam.OpenFOAM import dimForce, dimArea
sigma = volSymmTensorField(
IOobject(word("sigma"), fileName(runTime.timeName()), mesh,
IOobject.READ_IF_PRESENT, IOobject.AUTO_WRITE), mesh,
dimensionedSymmTensor(word("zero"), dimForce / dimArea,
symmTensor.zero))
from materialModels.rheologyModel import rheologyModel
rheology = rheologyModel(sigma)
return U, sigma, rheology
def main_standalone(argc, argv):
from Foam.OpenFOAM.include import setRootCase
args = setRootCase(argc, argv)
from Foam.OpenFOAM.include import createTime
runTime = createTime(args)
from Foam.OpenFOAM.include import createMesh
mesh = createMesh(runTime)
U, phi, laminarTransport, turbulence, Ubar, wallNormal, flowDirection, flowMask, y, gradP = _createFields(
runTime, mesh)
from Foam.OpenFOAM import ext_Info, nl
ext_Info() << "\nStarting time loop\n" << nl
while runTime.loop():
ext_Info() << "\nTime = " << runTime.timeName() << nl << nl
divR = turbulence.divDevReff(U)
from Foam.OpenFOAM import vectorField
tmp = flowMask & divR.source()
divR.source().ext_assign(tmp)
UEqn = divR == gradP
UEqn.relax()
UEqn.solve()
# Correct driving force for a constant mass flow rate
UbarStar = flowMask & U.weightedAverage(mesh.V())
U.ext_assign(U + (Ubar - UbarStar))
gradP += (Ubar - UbarStar) / (1.0 / UEqn.A()).weightedAverage(mesh.V())
id_ = y.size() - 1
wallShearStress = flowDirection & turbulence.R()()[id_] & wallNormal
from Foam.OpenFOAM import mag
from math import sqrt
yplusWall = sqrt(
mag(wallShearStress)) * y()[id_] / turbulence.nuEff()()[id_]
ext_Info() << "Uncorrected Ubar = " << ( flowDirection & UbarStar.value() )<< " " \
<< "pressure gradient = " << ( flowDirection & gradP.value() ) << " " \
<< "min y+ = " << yplusWall << nl
turbulence.correct()
if runTime.outputTime():
from Foam.finiteVolume import volSymmTensorField
from Foam.OpenFOAM import IOdictionary, IOobject, word, fileName
R = volSymmTensorField(
IOobject(word("R"), fileName(runTime.timeName()),
mesh, IOobject.NO_READ, IOobject.AUTO_WRITE),
turbulence.R())
runTime.write()
gFormat = runTime.graphFormat()
from Foam.sampling import makeGraph
makeGraph(y, flowDirection & U, word("Uf"), gFormat)
makeGraph(y, laminarTransport.ext_nu(), gFormat)
makeGraph(y, turbulence.ext_k(), gFormat)
makeGraph(y, turbulence.ext_epsilon(), gFormat)
from Foam.OpenFOAM import tensor
makeGraph(y, R.component(tensor.XY), word("uv"), gFormat)
from Foam import fvc
makeGraph(y, fvc.grad(U).mag(), word("gammaDot"), gFormat)
runTime.write()
pass
ext_Info() << "ExecutionTime = " << runTime.elapsedCpuTime() << " s" << \
" ClockTime = " << runTime.elapsedClockTime() << " s" << nl << nl
pass
ext_Info() << "End\n" << nl
import os
return os.EX_OK
def main_standalone( argc, argv ):
from Foam.OpenFOAM.include import setRootCase
args = setRootCase( argc, argv )
from Foam.OpenFOAM.include import createTime
runTime = createTime( args )
from Foam.OpenFOAM.include import createMesh
mesh = createMesh( runTime )
U, phi, laminarTransport, turbulence, Ubar, wallNormal, flowDirection, flowMask, y, gradP = _createFields( runTime, mesh )
from Foam.OpenFOAM import ext_Info, nl
ext_Info() << "\nStarting time loop\n" << nl
while runTime.loop() :
ext_Info() << "\nTime = " << runTime.timeName() << nl << nl
divR = turbulence.divDevReff( U )
divR.source().ext_assign( flowMask & divR.source() )
UEqn = divR == gradP
UEqn.relax()
UEqn.solve()
# Correct driving force for a constant mass flow rate
UbarStar = flowMask & U.weightedAverage(mesh.V())
U.ext_assign( U + ( Ubar - UbarStar ) )
gradP += ( Ubar - UbarStar ) / ( 1.0 / UEqn.A() ).weightedAverage( mesh.V() )
id_ = y.size() - 1
wallShearStress = flowDirection & turbulence.R()()[id_] & wallNormal
from Foam.OpenFOAM import mag
from math import sqrt
yplusWall = sqrt( mag( wallShearStress ) ) * y()[ id_ ] / turbulence.nuEff()()[ id_ ]
ext_Info() << "Uncorrected Ubar = " << ( flowDirection & UbarStar.value() )<< " " \
<< "pressure gradient = " << ( flowDirection & gradP.value() ) << " " \
<< "min y+ = " << yplusWall << nl
turbulence.correct()
if runTime.outputTime():
from Foam.finiteVolume import volSymmTensorField
from Foam.OpenFOAM import IOdictionary, IOobject, word, fileName
R = volSymmTensorField( IOobject( word( "R" ),
fileName( runTime.timeName() ),
mesh,
IOobject.NO_READ,
IOobject.AUTO_WRITE ),
turbulence.R() )
runTime.write()
gFormat = runTime.graphFormat()
from Foam.sampling import makeGraph
makeGraph( y, flowDirection & U, word( "Uf" ), gFormat )
makeGraph( y, laminarTransport.ext_nu(), gFormat )
makeGraph( y, turbulence.ext_k(), gFormat )
makeGraph( y, turbulence.ext_epsilon(), gFormat )
from Foam.OpenFOAM import tensor
makeGraph( y, R.component( tensor.XY ), word( "uv" ), gFormat )
from Foam import fvc
makeGraph( y, fvc.grad(U).mag(), word( "gammaDot" ), gFormat )
runTime.write()
pass
ext_Info() << "ExecutionTime = " << runTime.elapsedCpuTime() << " s" << \
" ClockTime = " << runTime.elapsedClockTime() << " s" << nl << nl
pass
ext_Info() << "End\n" << nl
import os
return os.EX_OK
