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diffusionGasEvaporation< Thermo, OtherThermo > Class Template Reference

Gas diffusion based evaporation/condensation mass transfer model. More...

#include <diffusionGasEvaporation.H>

Inheritance diagram for diffusionGasEvaporation< Thermo, OtherThermo >:
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Collaboration diagram for diffusionGasEvaporation< Thermo, OtherThermo >:
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Public Member Functions

 TypeName ("diffusionGasEvaporation")
 Runtime type information.
 diffusionGasEvaporation (const dictionary &dict, const phasePair &pair)
 Construct from components.
virtual ~diffusionGasEvaporation ()=default
 Destructor.
virtual tmp< volScalarField > Kexp (const volScalarField &field)
 Explicit total mass transfer coefficient.
virtual tmp< volScalarField > KSp (label modelVariable, const volScalarField &field)
 Implicit mass transfer coefficient.
virtual tmp< volScalarField > KSu (label modelVariable, const volScalarField &field)
 Explicit mass transfer coefficient.
virtual const dimensionedScalar & Tactivate () const noexcept
 Return Tactivate.
virtual bool includeDivU () const noexcept
 Add/subtract alpha*div(U) as a source term for alpha, substituting div(U) = mDot(1/rho1 - 1/rho2).
Public Member Functions inherited from InterfaceCompositionModel< Thermo, OtherThermo >
 InterfaceCompositionModel (const dictionary &dict, const phasePair &pair)
 Construct from components.
virtual ~InterfaceCompositionModel ()=default
 Destructor.
virtual tmp< volScalarField > dY (const word &speciesName, const volScalarField &Tf) const
 Mass fraction difference between the interface and the field.
virtual tmp< volScalarField > Yf (const word &speciesName, const volScalarField &Tf) const
 Reference mass fraction for species based models.
virtual tmp< volScalarField > Dfrom (const word &speciesName) const
 Specie mass diffusivity for pure mixture.
virtual tmp< volScalarField > Dto (const word &speciesName) const
 Specie mass diffusivity for specie in a multicomponent.
virtual tmp< volScalarField > L (const word &speciesName, const volScalarField &Tf) const
 Latent heat (to - from)(thermo - otherThermo).
 InterfaceCompositionModel (const dictionary &dict, const phasePair &pair)
 Construct from components.
 ~InterfaceCompositionModel ()=default
 Destructor.
virtual tmp< volScalarField > dY (const word &speciesName, const volScalarField &Tf) const
 Mass fraction difference between the interface and the field.
virtual tmp< volScalarField > D (const word &speciesName) const
 Mass diffusivity.
virtual tmp< volScalarField > L (const word &speciesName, const volScalarField &Tf) const
 Latent heat.
virtual void addMDotL (const volScalarField &K, const volScalarField &Tf, volScalarField &mDotL, volScalarField &mDotLPrime) const
 Add latent heat flow rate to total.
template<class ThermoType>
const Foam::multiComponentMixture< ThermoType >::thermoType & getLocalThermo (const word &speciesName, const multiComponentMixture< ThermoType > &globalThermo) const
template<class ThermoType>
const Foam::pureMixture< ThermoType >::thermoType & getLocalThermo (const word &speciesName, const pureMixture< ThermoType > &globalThermo) const
template<class ThermoType>
Foam::tmp< Foam::volScalarField > getSpecieMassFraction (const word &speciesName, const multiComponentMixture< ThermoType > &mixture) const
template<class ThermoType>
Foam::tmp< Foam::volScalarField > getSpecieMassFraction (const word &speciesName, const pureMixture< ThermoType > &mixture) const
template<class ThermoType>
Foam::tmp< Foam::volScalarField > MwMixture (const pureMixture< ThermoType > &mixture) const
template<class ThermoType>
Foam::tmp< Foam::volScalarField > MwMixture (const multiComponentMixture< ThermoType > &mixture) const
Public Member Functions inherited from interfaceCompositionModel
 TypeName ("interfaceCompositionModel")
 Runtime type information.
 declareRunTimeSelectionTable (autoPtr, interfaceCompositionModel, dictionary,(const dictionary &dict, const phasePair &pair),(dict, pair))
 interfaceCompositionModel (const dictionary &dict, const phasePair &pair)
 Construct from a dictionary and a phase pair.
virtual ~interfaceCompositionModel ()=default
 Destructor.
const word transferSpecie () const
 Return the transferring species name.
const phasePair & pair () const
 The phase pair.
const multiphaseInterSystem & fluid () const
 Return the multiphaseInterSystem this interface belongs to.
bool includeVolChange ()
 Add volume change in pEq.
const word & variable () const
 Returns the variable on which the model is based.

Additional Inherited Members

Public Types inherited from interfaceCompositionModel
enum  modelVariable { T , P , Y , alpha }
 Enumeration for variable based mass transfer models. More...
Static Public Member Functions inherited from interfaceCompositionModel
static autoPtr< interfaceCompositionModel > New (const dictionary &dict, const phasePair &pair)
Protected Member Functions inherited from InterfaceCompositionModel< Thermo, OtherThermo >
template<class ThermoType>
const pureMixture< ThermoType >::thermoType & getLocalThermo (const word &speciesName, const pureMixture< ThermoType > &globalThermo) const
 Get a reference to the local thermo for a pure mixture.
template<class ThermoType>
const multiComponentMixture< ThermoType >::thermoType & getLocalThermo (const word &speciesName, const multiComponentMixture< ThermoType > &globalThermo) const
 Get a reference to the local thermo for a multi component mixture.
template<class ThermoType>
tmp< volScalarField > getSpecieMassFraction (const word &speciesName, const pureMixture< ThermoType > &thermo) const
 Return mass fraction for a pureMixture equal to one.
template<class ThermoType>
tmp< volScalarField > getSpecieMassFraction (const word &speciesName, const multiComponentMixture< ThermoType > &thermo) const
 Return mass fraction for speciesName.
template<class ThermoType>
tmp< volScalarField > MwMixture (const pureMixture< ThermoType > &thermo) const
 Return moleculas weight of the mixture for pureMixture [Kg/mol].
template<class ThermoType>
tmp< volScalarField > MwMixture (const multiComponentMixture< ThermoType > &) const
 Return moleculas weight of the mixture for multiComponentMixture.
template<class ThermoType>
const pureMixture< ThermoType >::thermoType & getLocalThermo (const word &speciesName, const pureMixture< ThermoType > &globalThermo) const
 Get a reference to the local thermo for a pure mixture.
template<class ThermoType>
const multiComponentMixture< ThermoType >::thermoType & getLocalThermo (const word &speciesName, const multiComponentMixture< ThermoType > &globalThermo) const
 Get a reference to the local thermo for a multi component mixture.
Protected Attributes inherited from InterfaceCompositionModel< Thermo, OtherThermo >
const Thermo & fromThermo_
 Thermo (from).
const OtherThermo & toThermo_
 Other Thermo (to).
const dimensionedScalar Le_
 Lewis number.
const Thermo & thermo_
 Thermo.
const OtherThermo & otherThermo_
 Other Thermo.
Protected Attributes inherited from interfaceCompositionModel
modelVariable modelVariable_
 Enumeration for the model variable.
bool includeVolChange_
 Add volume change in pEq.
const phasePair & pair_
 Phase pair.
word speciesName_
 Names of the transferring specie.
const fvMesh & mesh_
 Reference to mesh.
Static Protected Attributes inherited from interfaceCompositionModel
static const Enum< modelVariable > modelVariableNames_
 Selection names for the modelVariable.

Detailed Description

template<class Thermo, class OtherThermo>
class Foam::meltingEvaporationModels::diffusionGasEvaporation< Thermo, OtherThermo >

Gas diffusion based evaporation/condensation mass transfer model.

THE evaporation rate is given by:

\‍[ \hat{m_i} = - C \rho_{g} D_{v,i} \frac { \frac{dY_{v,i}}{dn} } { 1 - \; \sum_{1}^{Nv}Y_{g,j} } \‍]

where:

$ \hat{m_i} $=mass flux rate [kg/s/m2]
$ \rho_{g} $=gas phase density
$ D_{v,i} $=diffusion coefficient
$ C $=model coefficient
$ \frac{dY_{v,i}}{dn} $=normal derivative of evaporated component
$ Y_{g,j} $=mass fraction at the surface
Usage
Example usage: 
massTransferModel
(
    (liquid to gas)
    {
        // Mandatory entries
        type                diffusionGasEvaporation;
        species             vapour.gas;
        C                   1;
        saturationPressure
        {
            type    Antoine;
            A       3.55;
            B       643;
            C       -198;
        }

        // Optional entries
        isoAlpha            <scalar>;
        Tactivate           <scalar>;

        // Inherited entries
        ...
    }
);

where:

Property Description Type Reqd Deflt
type Type name: diffusionGasEvaporation word yes -
saturationPressure Saturation model dict yes -
isoAlpha Iso-alpha for interface scalar no 0.5
C Model coefficient scalar yes -
Tactivate Saturation temperature scalar no 0

The inherited entries are elaborated in:

Source files

Definition at line 181 of file diffusionGasEvaporation.H.

Constructor & Destructor Documentation

◆ diffusionGasEvaporation()

template<class Thermo, class OtherThermo>
diffusionGasEvaporation ( const dictionary & dict,
const phasePair & pair )

Construct from components.

Definition at line 65 of file diffusionGasEvaporation.C.

References dict, Foam::dimDensity, Foam::dimLength, Foam::dimless, Foam::dimTemperature, Foam::dimTime, InterfaceCompositionModel< Thermo, OtherThermo >::InterfaceCompositionModel(), interfaceCompositionModel::mesh_, interfaceCompositionModel::New(), interfaceCompositionModel::pair(), timeName, and Foam::Zero.

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◆ ~diffusionGasEvaporation()

template<class Thermo, class OtherThermo>
virtual ~diffusionGasEvaporation ( )
virtualdefault

Destructor.

References field().

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Member Function Documentation

◆ TypeName()

template<class Thermo, class OtherThermo>
TypeName ( "diffusionGasEvaporation< Thermo, OtherThermo >" )

Runtime type information.

References dict, and interfaceCompositionModel::pair().

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◆ Kexp()

template<class Thermo, class OtherThermo>
Foam::tmp< Foam::volScalarField > Kexp ( const volScalarField & field)
virtual

Explicit total mass transfer coefficient.

Implements interfaceCompositionModel.

Definition at line 117 of file diffusionGasEvaporation.C.

References Foam::dimDensity, Foam::dimLength, Foam::dimMass, Foam::dimMoles, Foam::dimTime, InterfaceCompositionModel< Thermo, OtherThermo >::Dto(), fluid, interfaceCompositionModel::fluid(), InterfaceCompositionModel< Thermo, OtherThermo >::getLocalThermo(), Foam::fvc::grad(), Foam::max(), IOobject::member(), mesh, interfaceCompositionModel::mesh_, GeometricField< scalar, fvPatchField, volMesh >::New(), tmp< T >::New(), IOobjectOption::NO_REGISTER, interfaceCompositionModel::pair(), Foam::pos(), rhog(), Foam::sqr(), interfaceCompositionModel::T, InterfaceCompositionModel< Thermo, OtherThermo >::toThermo_, interfaceCompositionModel::transferSpecie(), regIOobject::write(), and Foam::Zero.

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◆ KSp()

template<class Thermo, class OtherThermo>
Foam::tmp< Foam::volScalarField > KSp ( label modelVariable,
const volScalarField & field )
virtual

Implicit mass transfer coefficient.

Implements interfaceCompositionModel.

Definition at line 212 of file diffusionGasEvaporation.C.

References interfaceCompositionModel::variable().

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◆ KSu()

template<class Thermo, class OtherThermo>
Foam::tmp< Foam::volScalarField > KSu ( label modelVariable,
const volScalarField & field )
virtual

Explicit mass transfer coefficient.

Implements interfaceCompositionModel.

Definition at line 225 of file diffusionGasEvaporation.C.

References interfaceCompositionModel::variable().

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◆ Tactivate()

template<class Thermo, class OtherThermo>
virtual const dimensionedScalar & Tactivate ( ) const
inlinevirtualnoexcept

Return Tactivate.

Implements interfaceCompositionModel.

Definition at line 283 of file diffusionGasEvaporation.H.

References Foam::noexcept.

◆ includeDivU()

template<class Thermo, class OtherThermo>
virtual bool includeDivU ( ) const
inlinevirtualnoexcept

Add/subtract alpha*div(U) as a source term for alpha, substituting div(U) = mDot(1/rho1 - 1/rho2).

Reimplemented from interfaceCompositionModel.

Definition at line 292 of file diffusionGasEvaporation.H.

References Foam::noexcept.

The documentation for this class was generated from the following files: