def _createFields(runTime, mesh):
from Foam.OpenFOAM import ext_Info, nl
from Foam.OpenFOAM import IOdictionary, IOobject, word, fileName
from Foam.finiteVolume import volVectorField
ext_Info() << "Reading field U\n" << nl
U = volVectorField(
IOobject(word("U"), fileName(runTime.timeName()), mesh,
IOobject.MUST_READ, IOobject.AUTO_WRITE), mesh)
ext_Info() << "Creating face flux\n" << nl
from Foam.OpenFOAM import dimensionedScalar
from Foam.finiteVolume import surfaceScalarField
phi = surfaceScalarField(
IOobject(word("phi"), fileName(runTime.timeName()), mesh,
IOobject.NO_READ, IOobject.NO_WRITE), mesh,
dimensionedScalar(word("zero"),
mesh.Sf().dimensions() * U.dimensions(), 0.0))
from Foam.transportModels import singlePhaseTransportModel
laminarTransport = singlePhaseTransportModel(U, phi)
from Foam import incompressible
turbulence = incompressible.RASModel.New(U, phi, laminarTransport)
transportProperties = IOdictionary(
IOobject(word("transportProperties"), fileName(runTime.constant()),
mesh, IOobject.MUST_READ, IOobject.NO_WRITE))
from Foam.OpenFOAM import dimensionedVector, vector
Ubar = dimensionedVector(transportProperties.lookup(word("Ubar")))
flowDirection = (Ubar / Ubar.mag()).ext_value()
flowMask = flowDirection.sqr()
nWallFaces = 0.0
from Foam.OpenFOAM import vector
wallNormal = vector.zero
patches = mesh.boundary()
for patchi in range(mesh.boundary().size()):
currPatch = patches[patchi]
from Foam.finiteVolume import wallFvPatch
if wallFvPatch.ext_isA(currPatch):
for facei in range(currPatch.size()):
nWallFaces = nWallFaces + 1
if nWallFaces == 1:
wallNormal = -mesh.Sf().ext_boundaryField(
)[patchi][facei] / mesh.magSf().ext_boundaryField(
)[patchi][facei]
pass
elif nWallFaces == 2:
wallNormal2 = mesh.Sf().ext_boundaryField(
)[patchi][facei] / mesh.magSf().ext_boundaryField(
)[patchi][facei]
#- Check that wall faces are parallel
from Foam.OpenFOAM import mag
if mag(wallNormal
& wallNormal2) > 1.01 or mag(wallNormal
& wallNormal2) < 0.99:
ext_Info(
) << "boundaryFoam: wall faces are not parallel" << nl
import os
os.abort()
pass
pass
else:
ext_Info(
) << "boundaryFoam: number of wall faces > 2" << nl
import os
os.abort()
pass
pass
pass
#- create position array for graph generation
y = wallNormal & mesh.C().internalField()
from Foam.OpenFOAM import dimensionSet, vector, word
gradP = dimensionedVector(word("gradP"),
dimensionSet(0.0, 1.0, -2.0, 0.0, 0.0),
vector(0.0, 0.0, 0.0))
return U, phi, laminarTransport, turbulence, Ubar, wallNormal, flowDirection, flowMask, y, gradP
def _createFields( runTime, mesh ):
from Foam.OpenFOAM import ext_Info, nl
from Foam.OpenFOAM import IOdictionary, IOobject, word, fileName
from Foam.finiteVolume import volVectorField
ext_Info() << "Reading field U\n" << nl
U = volVectorField( IOobject( word( "U" ),
fileName( runTime.timeName() ),
mesh,
IOobject.MUST_READ,
IOobject.AUTO_WRITE ),
mesh )
ext_Info() << "Creating face flux\n" << nl
from Foam.OpenFOAM import dimensionedScalar
from Foam.finiteVolume import surfaceScalarField
phi = surfaceScalarField( IOobject( word( "phi" ),
fileName( runTime.timeName() ),
mesh,
IOobject.NO_READ,
IOobject.NO_WRITE ),
mesh,
dimensionedScalar( word( "zero" ), mesh.Sf().dimensions()*U.dimensions(), 0.0) )
from Foam.transportModels import singlePhaseTransportModel
laminarTransport = singlePhaseTransportModel( U, phi )
from Foam import incompressible
turbulence = incompressible.RASModel.New( U, phi, laminarTransport )
transportProperties = IOdictionary( IOobject( word( "transportProperties" ),
fileName( runTime.constant() ),
mesh,
IOobject.MUST_READ,
IOobject.NO_WRITE ) )
from Foam.OpenFOAM import dimensionedVector, vector
Ubar = dimensionedVector( transportProperties.lookup( word( "Ubar" ) ) )
flowDirection = ( Ubar / Ubar.mag() ).ext_value()
flowMask = flowDirection.sqr()
nWallFaces = 0.0
from Foam.OpenFOAM import vector
wallNormal = vector.zero
patches = mesh.boundary()
for patchi in range( mesh.boundary().size() ):
currPatch = patches[patchi]
from Foam.finiteVolume import wallFvPatch
if wallFvPatch.ext_isType( currPatch ):
for facei in range( currPatch.size() ):
nWallFaces = nWallFaces +1
if nWallFaces == 1:
wallNormal = - mesh.Sf().ext_boundaryField()[patchi][facei] / mesh.magSf().ext_boundaryField()[patchi][facei]
pass
elif nWallFaces == 2:
wallNormal2 = mesh.Sf().ext_boundaryField()[patchi][facei] / mesh.magSf().ext_boundaryField()[patchi][facei]
#- Check that wall faces are parallel
from Foam.OpenFOAM import mag
if mag(wallNormal & wallNormal2) > 1.01 or mag(wallNormal & wallNormal2) < 0.99:
ext_Info() << "boundaryFoam: wall faces are not parallel" << nl
import os
os.abort()
pass
pass
else:
ext_Info() << "boundaryFoam: number of wall faces > 2" << nl
import os
os.abort()
pass
pass
pass
#- create position array for graph generation
y = wallNormal & mesh.C().internalField()
from Foam.OpenFOAM import dimensionSet, vector, word
gradP = dimensionedVector( word( "gradP" ),
dimensionSet( 0.0, 1.0, -2.0, 0.0, 0.0 ),
vector( 0.0, 0.0, 0.0 ) )
return U, phi, laminarTransport, turbulence, Ubar, wallNormal, flowDirection, flowMask, y, gradP
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
