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ENH: Added semi-implicit treatment for particle sources

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This commit is contained in:
andy
2010-10-25 13:13:55 +01:00
parent 049933ad32
commit 51ffd56cc6
12 changed files with 310 additions and 69 deletions
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47
src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloud.C
View File

@ -126,6 +126,16 @@ Foam::scalar Foam::KinematicCloud<ParcelType>::cloudSolution::relaxCoeff
}
template<class ParcelType>
bool Foam::KinematicCloud<ParcelType>::cloudSolution::semiImplicit
(
const word& fieldName
) const
{
return readBool(sourceTermDict().subDict(fieldName).lookup("semiImplicit"));
}
template<class ParcelType>
bool Foam::KinematicCloud<ParcelType>::cloudSolution::sourceActive() const
{
@ -495,6 +505,22 @@ Foam::KinematicCloud<ParcelType>::KinematicCloud
mesh_,
dimensionedVector("zero", dimMass*dimVelocity, vector::zero)
)
),
UCoeff_
(
new DimensionedField<scalar, volMesh>
(
IOobject
(
this->name() + "UCoeff",
this->db().time().timeName(),
this->db(),
IOobject::READ_IF_PRESENT,
IOobject::AUTO_WRITE
),
mesh_,
dimensionedScalar("zero", dimMass/dimTime, 0.0)
)
)
{
if (readFields)
@ -556,7 +582,24 @@ Foam::KinematicCloud<ParcelType>::KinematicCloud
c.UTrans_().dimensions(),
c.UTrans_().field()
)
),
UCoeff_
(
new DimensionedField<scalar, volMesh>
(
IOobject
(
name + "UCoeff",
this->db().time().timeName(),
this->db(),
IOobject::NO_READ,
IOobject::NO_WRITE,
false
),
c.UCoeff_()
)
)
{}
@ -602,7 +645,8 @@ Foam::KinematicCloud<ParcelType>::KinematicCloud
postProcessingModel_(NULL),
surfaceFilmModel_(NULL),
UIntegrator_(NULL),
UTrans_(NULL)
UTrans_(NULL),
UCoeff_(NULL)
{}
@ -658,6 +702,7 @@ template<class ParcelType>
void Foam::KinematicCloud<ParcelType>::resetSourceTerms()
{
UTrans().field() = vector::zero;
UCoeff().field() = 0.0;
}

17
src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloud.H
View File

@ -187,6 +187,9 @@ public:
//- Return relaxation coefficient for field
scalar relaxCoeff(const word& fieldName) const;
//- Return semi-implicit flag coefficient for field
bool semiImplicit(const word& fieldName) const;
//- Return reference to the mesh
inline const fvMesh& mesh() const;
@ -323,6 +326,9 @@ protected:
//- Momentum
autoPtr<DimensionedField<vector, volMesh> > UTrans_;
//- Coefficient for carrier phase U equation
autoPtr<DimensionedField<scalar, volMesh> > UCoeff_;
// Cloud evolution functions
@ -536,8 +542,15 @@ public:
inline const DimensionedField<vector, volMesh>&
UTrans() const;
//- Return tmp momentum source term - fully explicit
inline tmp<DimensionedField<vector, volMesh> > SU() const;
//- Return coefficient for carrier phase U equation
inline DimensionedField<scalar, volMesh>& UCoeff();
//- Return const coefficient for carrier phase U equation
inline const DimensionedField<scalar, volMesh>&
UCoeff() const;
//- Return tmp momentum source term
inline tmp<fvVectorMatrix> SU(volVectorField& U) const;
// Check

68
src/lagrangian/intermediate/clouds/Templates/KinematicCloud/KinematicCloudI.H
View File

@ -410,38 +410,54 @@ Foam::KinematicCloud<ParcelType>::UTrans() const
template<class ParcelType>
inline Foam::tmp<Foam::DimensionedField<Foam::vector, Foam::volMesh> >
Foam::KinematicCloud<ParcelType>::SU() const
inline Foam::DimensionedField<Foam::scalar, Foam::volMesh>&
Foam::KinematicCloud<ParcelType>::UCoeff()
{
tmp<DimensionedField<vector, volMesh> > tSU
(
new DimensionedField<vector, volMesh>
(
IOobject
(
this->name() + "SU",
this->db().time().timeName(),
this->mesh(),
IOobject::NO_READ,
IOobject::NO_WRITE
),
this->mesh(),
dimensionedVector
(
"zero",
dimDensity*dimVelocity/dimTime,
vector::zero
)
)
);
return UCoeff_();
}
template<class ParcelType>
inline const Foam::DimensionedField<Foam::scalar, Foam::volMesh>&
Foam::KinematicCloud<ParcelType>::UCoeff() const
{
return UCoeff_();
}
template<class ParcelType>
inline Foam::tmp<Foam::fvVectorMatrix>
Foam::KinematicCloud<ParcelType>::SU(volVectorField& U) const
{
if (debug)
{
Info<< "UTrans min/max = " << min(UTrans()).value() << ", "
<< max(UTrans()).value() << nl
<< "UCoeff min/max = " << min(UCoeff()).value() << ", "
<< max(UCoeff()).value() << endl;
}
if (solution_.sourceActive())
{
vectorField& SU = tSU().field();
SU = UTrans()/(mesh_.V()*this->db().time().deltaT());
if (solution_.semiImplicit("UTrans"))
{
return
UTrans()/(mesh_.V()*this->db().time().deltaT())
+ fvm::SuSp(-UCoeff().dimensionedInternalField()/mesh_.V(), U)
+ UCoeff()/mesh_.V()*U;
}
else
{
tmp<fvVectorMatrix> tfvm(new fvVectorMatrix(U, dimForce));
fvVectorMatrix& fvm = tfvm();
fvm.source() = -UTrans()/(this->db().time().deltaT());
return tfvm;
}
}
return tSU;
return tmp<fvVectorMatrix>(new fvVectorMatrix(U, dimForce));
}

38
src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloud.C
View File

@ -103,7 +103,25 @@ Foam::ThermoCloud<ParcelType>::ThermoCloud
this->mesh(),
dimensionedScalar("zero", dimEnergy, 0.0)
)
),
hsCoeff_
(
new DimensionedField<scalar, volMesh>
(
IOobject
(
this->name() + "hsCoeff",
this->db().time().timeName(),
this->db(),
IOobject::READ_IF_PRESENT,
IOobject::AUTO_WRITE
),
this->mesh(),
dimensionedScalar("zero", dimEnergy/dimTime/dimTemperature, 0.0),
zeroGradientFvPatchScalarField::typeName
)
)
{
if (readFields)
{
@ -149,6 +167,22 @@ Foam::ThermoCloud<ParcelType>::ThermoCloud
),
c.hsTrans()
)
),
hsCoeff_
(
new DimensionedField<scalar, volMesh>
(
IOobject
(
this->name() + "hsCoeff",
this->db().time().timeName(),
this->db(),
IOobject::NO_READ,
IOobject::NO_WRITE,
false
),
c.hsCoeff()
)
)
{}
@ -171,7 +205,8 @@ Foam::ThermoCloud<ParcelType>::ThermoCloud
heatTransferModel_(NULL),
TIntegrator_(NULL),
radiation_(false),
hsTrans_(NULL)
hsTrans_(NULL),
hsCoeff_(NULL)
{}
@ -233,6 +268,7 @@ void Foam::ThermoCloud<ParcelType>::resetSourceTerms()
{
KinematicCloud<ParcelType>::resetSourceTerms();
hsTrans_->field() = 0.0;
hsCoeff_->field() = 0.0;
}

14
src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloud.H
View File

@ -122,6 +122,9 @@ protected:
//- Sensible enthalpy transfer [J/kg]
autoPtr<DimensionedField<scalar, volMesh> > hsTrans_;
//- Coefficient for carrier phase hs equation [W/K]
autoPtr<DimensionedField<scalar, volMesh> > hsCoeff_;
// Protected Member Functions
@ -232,8 +235,15 @@ public:
inline const DimensionedField<scalar, volMesh>&
hsTrans() const;
//- Return enthalpy source [J/kg/m3/s]
inline tmp<DimensionedField<scalar, volMesh> > Sh() const;
//- Return coefficient for carrier phase hs equation
inline DimensionedField<scalar, volMesh>& hsCoeff();
//- Return const coefficient for carrier phase hs equation
inline const DimensionedField<scalar, volMesh>&
hsCoeff() const;
//- Return sensible enthalpy source term [J/kg/m3/s]
inline tmp<fvScalarMatrix> Sh(volScalarField& hs) const;
// Radiation - overrides thermoCloud virtual abstract members

70
src/lagrangian/intermediate/clouds/Templates/ThermoCloud/ThermoCloudI.H
View File

@ -98,34 +98,60 @@ Foam::ThermoCloud<ParcelType>::hsTrans() const
template<class ParcelType>
inline Foam::tmp<Foam::DimensionedField<Foam::scalar, Foam::volMesh> >
Foam::ThermoCloud<ParcelType>::Sh() const
inline Foam::DimensionedField<Foam::scalar, Foam::volMesh>&
Foam::ThermoCloud<ParcelType>::hsCoeff()
{
tmp<DimensionedField<scalar, volMesh> > tSh
(
new DimensionedField<scalar, volMesh>
(
IOobject
(
this->name() + "Sh",
this->db().time().timeName(),
this->mesh(),
IOobject::NO_READ,
IOobject::NO_WRITE,
false
),
this->mesh(),
dimensionedScalar("zero", dimEnergy/dimVolume/dimTime, 0.0)
)
);
return hsCoeff_();
}
template<class ParcelType>
inline const Foam::DimensionedField<Foam::scalar, Foam::volMesh>&
Foam::ThermoCloud<ParcelType>::hsCoeff() const
{
return hsCoeff_();
}
template<class ParcelType>
inline Foam::tmp<Foam::fvScalarMatrix>
Foam::ThermoCloud<ParcelType>::Sh(volScalarField& hs) const
{
if (debug)
{
Info<< "hsTrans min/max = " << min(hsTrans()).value() << ", "
<< max(hsTrans()).value() << nl
<< "hsCoeff min/max = " << min(hsCoeff()).value() << ", "
<< max(hsCoeff()).value() << endl;
}
if (this->solution().sourceActive())
{
scalarField& Sh = tSh();
Sh = hsTrans_()/(this->mesh().V()*this->db().time().deltaT());
if (this->solution().semiImplicit("hsTrans"))
{
const volScalarField Cp = thermo_.thermo().Cp();
return
hsTrans()/(this->mesh().V()*this->db().time().deltaT())
+ fvm::SuSp
(
-hsCoeff().dimensionedInternalField()/(Cp*this->mesh().V()),
hs
)
+ hsCoeff()/(Cp*this->mesh().V())*hs;
}
else
{
tmp<fvScalarMatrix> tfvm(new fvScalarMatrix(hs, dimEnergy/dimTime));
fvScalarMatrix& fvm = tfvm();
fvm.source() = -hsTrans()/(this->db().time().deltaT());
return tfvm;
}
}
return tSh;
return tmp<fvScalarMatrix>(new fvScalarMatrix(hs, dimEnergy/dimTime));
}

33
src/lagrangian/intermediate/parcels/Templates/KinematicParcel/KinematicParcel.C
View File

@ -121,8 +121,23 @@ void Foam::KinematicParcel<ParcelType>::calc
// ~~~~~~
// Calculate new particle velocity
scalar Cud = 0.0;
vector U1 =
calcVelocity(td, dt, cellI, Re, muc_, d0, U0, rho0, mass0, Su, dUTrans);
calcVelocity
(
td,
dt,
cellI,
Re,
muc_,
d0,
U0,
rho0,
mass0,
Su,
dUTrans,
Cud
);
// Accumulate carrier phase source terms
@ -131,6 +146,9 @@ void Foam::KinematicParcel<ParcelType>::calc
{
// Update momentum transfer
td.cloud().UTrans()[cellI] += np0*dUTrans;
// Update momentum transfer coefficient
td.cloud().UCoeff()[cellI] += np0*mass0*Cud;
}
@ -154,7 +172,8 @@ const Foam::vector Foam::KinematicParcel<ParcelType>::calcVelocity
const scalar rho,
const scalar mass,
const vector& Su,
vector& dUTrans
vector& dUTrans,
scalar& Cud
) const
{
const polyMesh& mesh = this->cloud().pMesh();
@ -165,7 +184,7 @@ const Foam::vector Foam::KinematicParcel<ParcelType>::calcVelocity
tetIndices tetIs = this->currentTetIndices();
// Momentum source due to particle forces
const vector FCoupled = mass*td.cloud().forces().calcCoupled
const vector Fcp = mass*td.cloud().forces().calcCoupled
(
this->position(),
tetIs,
@ -177,7 +196,7 @@ const Foam::vector Foam::KinematicParcel<ParcelType>::calcVelocity
d
);
const vector FNonCoupled = mass*td.cloud().forces().calcNonCoupled
const vector Fncp = mass*td.cloud().forces().calcNonCoupled
(
this->position(),
tetIs,
@ -195,15 +214,17 @@ const Foam::vector Foam::KinematicParcel<ParcelType>::calcVelocity
// Update velocity - treat as 3-D
const scalar As = this->areaS(d);
const vector ap = Uc_ + (FCoupled + FNonCoupled + Su)/(utc*As);
const vector ap = Uc_ + (Fcp + Fncp + Su)/(utc*As);
const scalar bp = 6.0*utc/(rho*d);
Cud = bp;
IntegrationScheme<vector>::integrationResult Ures =
td.cloud().UIntegrator().integrate(U, dt, ap, bp);
vector Unew = Ures.value();
dUTrans += dt*(utc*As*(Ures.average() - Uc_) - FCoupled);
dUTrans += dt*(utc*As*(Ures.average() - Uc_) - Fcp);
// Apply correction to velocity and dUTrans for reduced-D cases
meshTools::constrainDirection(mesh, mesh.solutionD(), Unew);

3
src/lagrangian/intermediate/parcels/Templates/KinematicParcel/KinematicParcel.H
View File

@ -308,7 +308,8 @@ protected:
const scalar rho, // density
const scalar mass, // mass
const vector& Su, // explicit particle momentum source
vector& dUTrans // momentum transfer to carrier
vector& dUTrans, // momentum transfer to carrier
scalar& Cud // linearised drag coefficient
) const;

27
src/lagrangian/intermediate/parcels/Templates/ReactingMultiphaseParcel/ReactingMultiphaseParcel.C
View File

@ -353,6 +353,7 @@ void Foam::ReactingMultiphaseParcel<ParcelType>::calc
// ~~~~~~~~~~~~~
// Calculate new particle temperature
scalar Cuh = 0.0;
scalar T1 =
calcHeatTransfer
(
@ -368,7 +369,8 @@ void Foam::ReactingMultiphaseParcel<ParcelType>::calc
Cp0,
NCpW,
Sh,
dhsTrans
dhsTrans,
Cuh
);
@ -376,8 +378,23 @@ void Foam::ReactingMultiphaseParcel<ParcelType>::calc
// ~~~~~~
// Calculate new particle velocity
scalar Cud = 0;
vector U1 =
calcVelocity(td, dt, cellI, Re, mus, d0, U0, rho0, mass0, Su, dUTrans);
calcVelocity
(
td,
dt,
cellI,
Re,
mus,
d0,
U0,
rho0,
mass0,
Su,
dUTrans,
Cud
);
dUTrans += 0.5*(mass0 - mass1)*(U0 + U1);
@ -414,8 +431,14 @@ void Foam::ReactingMultiphaseParcel<ParcelType>::calc
// Update momentum transfer
td.cloud().UTrans()[cellI] += np0*dUTrans;
// Update momentum transfer coefficient
td.cloud().UCoeff()[cellI] += np0*0.5*(mass0 + mass1)*Cud;
// Update sensible enthalpy transfer
td.cloud().hsTrans()[cellI] += np0*dhsTrans;
// Update sensible enthalpy coefficient
td.cloud().hsCoeff()[cellI] += np0*Cuh*this->areaS();
}

27
src/lagrangian/intermediate/parcels/Templates/ReactingParcel/ReactingParcel.C
View File

@ -303,6 +303,7 @@ void Foam::ReactingParcel<ParcelType>::calc
// ~~~~~~~~~~~~~
// Calculate new particle temperature
scalar Cuh = 0.0;
scalar T1 =
calcHeatTransfer
(
@ -318,7 +319,8 @@ void Foam::ReactingParcel<ParcelType>::calc
Cp0,
NCpW,
Sh,
dhsTrans
dhsTrans,
Cuh
);
@ -326,8 +328,23 @@ void Foam::ReactingParcel<ParcelType>::calc
// ~~~~~~
// Calculate new particle velocity
scalar Cud = 0.0;
vector U1 =
calcVelocity(td, dt, cellI, Re, mus, d0, U0, rho0, mass0, Su, dUTrans);
calcVelocity
(
td,
dt,
cellI,
Re,
mus,
d0,
U0,
rho0,
mass0,
Su,
dUTrans,
Cud
);
dUTrans += 0.5*(mass0 - mass1)*(U0 + U1);
@ -345,8 +362,14 @@ void Foam::ReactingParcel<ParcelType>::calc
// Update momentum transfer
td.cloud().UTrans()[cellI] += np0*dUTrans;
// Update momentum transfer coefficient
td.cloud().UCoeff()[cellI] += np0*0.5*(mass0 + mass1)*Cud;
// Update sensible enthalpy transfer
td.cloud().hsTrans()[cellI] += np0*dhsTrans;
// Update sensible enthalpy coefficient
td.cloud().hsCoeff()[cellI] += np0*Cuh*this->areaS();
}

32
src/lagrangian/intermediate/parcels/Templates/ThermoParcel/ThermoParcel.C
View File

@ -164,6 +164,7 @@ void Foam::ThermoParcel<ParcelType>::calc
scalar NCpW = 0.0;
// Calculate new particle velocity
scalar Cuh = 0.0;
scalar T1 =
calcHeatTransfer
(
@ -179,7 +180,8 @@ void Foam::ThermoParcel<ParcelType>::calc
Cp0,
NCpW,
Sh,
dhsTrans
dhsTrans,
Cuh
);
@ -187,8 +189,23 @@ void Foam::ThermoParcel<ParcelType>::calc
// ~~~~~~
// Calculate new particle velocity
scalar Cud = 0.0;
vector U1 =
calcVelocity(td, dt, cellI, Re, mus, d0, U0, rho0, mass0, Su, dUTrans);
calcVelocity
(
td,
dt,
cellI,
Re,
mus,
d0,
U0,
rho0,
mass0,
Su,
dUTrans,
Cud
);
// Accumulate carrier phase source terms
@ -198,8 +215,14 @@ void Foam::ThermoParcel<ParcelType>::calc
// Update momentum transfer
td.cloud().UTrans()[cellI] += np0*dUTrans;
// Update momentum transfer coefficient
td.cloud().UCoeff()[cellI] += np0*mass0*Cud;
// Update sensible enthalpy transfer
td.cloud().hsTrans()[cellI] += np0*dhsTrans;
// Update sensible enthalpy coefficient
td.cloud().hsCoeff()[cellI] += np0*Cuh*this->areaS();
}
// Set new particle properties
@ -225,7 +248,8 @@ Foam::scalar Foam::ThermoParcel<ParcelType>::calcHeatTransfer
const scalar Cp,
const scalar NCpW,
const scalar Sh,
scalar& dhsTrans
scalar& dhsTrans,
scalar& Cuh
)
{
if (!td.cloud().heatTransfer().active())
@ -270,6 +294,8 @@ Foam::scalar Foam::ThermoParcel<ParcelType>::calcHeatTransfer
dhsTrans += dt*htc*As*(0.5*(T + Tnew) - Tc_);
Cuh = bp;
return Tnew;
}

3
src/lagrangian/intermediate/parcels/Templates/ThermoParcel/ThermoParcel.H
View File

@ -223,7 +223,8 @@ protected:
const scalar Cp, // specific heat capacity
const scalar NCpW, // Sum of N*Cp*W of emission species
const scalar Sh, // explicit particle enthalpy source
scalar& dhsTrans // sensible enthalpy transfer to carrier
scalar& dhsTrans, // sensible enthalpy transfer to carrier
scalar& Cuh // linearised heat transfer coefficient
);