effectivenessHeatExchangerSource Class Reference

Heat exchanger source model, in which the heat exchanger is defined as a selection of cells. More...

Inheritance diagram for effectivenessHeatExchangerSource:
Collaboration diagram for effectivenessHeatExchangerSource:

Public Member Functions

 TypeName ("effectivenessHeatExchangerSource")
 Runtime type information. More...
 
 effectivenessHeatExchangerSource (const word &name, const word &modelType, const dictionary &dict, const fvMesh &mesh)
 Construct from components. More...
 
 effectivenessHeatExchangerSource (const effectivenessHeatExchangerSource &)
 Disallow default bitwise copy construction. More...
 
virtual ~effectivenessHeatExchangerSource ()
 Destructor. More...
 
virtual wordList addSupFields () const
 Return the list of fields for which the fvModel adds source term. More...
 
virtual void addSup (const volScalarField &rho, fvMatrix< scalar > &eqn, const word &fieldName) const
 Explicit and implicit source for compressible equation. More...
 
virtual void updateMesh (const mapPolyMesh &)
 Update for mesh changes. More...
 
virtual bool read (const dictionary &dict)
 Read dictionary. More...
 
void operator= (const effectivenessHeatExchangerSource &)=delete
 Disallow default bitwise assignment. More...
 
- Public Member Functions inherited from fvModel
 TypeName ("fvModel")
 Runtime type information. More...
 
 declareRunTimeSelectionTable (autoPtr, fvModel, dictionary,(const word &name, const word &modelType, const dictionary &dict, const fvMesh &mesh),(name, modelType, dict, mesh))
 
 fvModel (const word &name, const word &modelType, const dictionary &dict, const fvMesh &mesh)
 Construct from components. More...
 
autoPtr< fvModelclone () const
 Return clone. More...
 
virtual ~fvModel ()
 Destructor. More...
 
const wordname () const
 Return const access to the source name. More...
 
const fvMeshmesh () const
 Return const access to the mesh database. More...
 
const dictionarycoeffs () const
 Return dictionary. More...
 
virtual bool addsSupToField (const word &fieldName) const
 Return true if the fvModel adds a source term to the given. More...
 
 FOR_ALL_FIELD_TYPES (DEFINE_FV_MODEL_ADD_SUP)
 Add a source term to an equation. More...
 
 FOR_ALL_FIELD_TYPES (DEFINE_FV_MODEL_ADD_RHO_SUP)
 Add a source term to a compressible equation. More...
 
 FOR_ALL_FIELD_TYPES (DEFINE_FV_MODEL_ADD_ALPHA_RHO_SUP)
 Add a source term to a phase equation. More...
 
template<class Type >
tmp< fvMatrix< Type > > source (const GeometricField< Type, fvPatchField, volMesh > &field) const
 Return source for an equation. More...
 
template<class Type >
tmp< fvMatrix< Type > > source (const GeometricField< Type, fvPatchField, volMesh > &field, const word &fieldName) const
 Return source for an equation with a specified name. More...
 
template<class Type >
tmp< fvMatrix< Type > > source (const volScalarField &rho, const GeometricField< Type, fvPatchField, volMesh > &field) const
 Return source for a compressible equation. More...
 
template<class Type >
tmp< fvMatrix< Type > > source (const volScalarField &rho, const GeometricField< Type, fvPatchField, volMesh > &field, const word &fieldName) const
 Return source for a compressible equation with a specified name. More...
 
template<class Type >
tmp< fvMatrix< Type > > source (const volScalarField &alpha, const volScalarField &rho, const GeometricField< Type, fvPatchField, volMesh > &field) const
 Return source for a phase equation. More...
 
template<class Type >
tmp< fvMatrix< Type > > source (const volScalarField &alpha, const volScalarField &rho, const GeometricField< Type, fvPatchField, volMesh > &field, const word &fieldName) const
 Return source for a phase equation with a specified name. More...
 
virtual void preUpdateMesh ()
 Prepare for mesh update. More...
 
virtual bool movePoints ()
 Update for mesh motion. More...
 
virtual void correct ()
 Correct the fvModel. More...
 
template<class Type , class AlphaRhoFieldType , class ... AlphaRhoFieldTypes>
Foam::dimensionSet sourceDims (const GeometricField< Type, fvPatchField, volMesh > &field, const dimensionSet &ds, const AlphaRhoFieldType &alphaRho, const AlphaRhoFieldTypes &... alphaRhos)
 
template<class Type >
Foam::dimensionSet sourceDims (const GeometricField< Type, fvPatchField, volMesh > &field, const dimensionSet &ds)
 
template<class Type , class ... AlphaRhoFieldTypes>
Foam::tmp< Foam::fvMatrix< Type > > source (const GeometricField< Type, fvPatchField, volMesh > &field, const word &fieldName, const dimensionSet &ds, const AlphaRhoFieldTypes &... alphaRhos) const
 
template<class Type >
Foam::tmp< Foam::fvMatrix< Type > > source (const GeometricField< Type, fvPatchField, volMesh > &field) const
 
template<class Type >
Foam::tmp< Foam::fvMatrix< Type > > source (const GeometricField< Type, fvPatchField, volMesh > &field, const word &fieldName) const
 
template<class Type >
Foam::tmp< Foam::fvMatrix< Type > > source (const volScalarField &rho, const GeometricField< Type, fvPatchField, volMesh > &field) const
 
template<class Type >
Foam::tmp< Foam::fvMatrix< Type > > source (const volScalarField &rho, const GeometricField< Type, fvPatchField, volMesh > &field, const word &fieldName) const
 
template<class Type >
Foam::tmp< Foam::fvMatrix< Type > > source (const volScalarField &alpha, const volScalarField &rho, const GeometricField< Type, fvPatchField, volMesh > &field) const
 
template<class Type >
Foam::tmp< Foam::fvMatrix< Type > > source (const volScalarField &alpha, const volScalarField &rho, const GeometricField< Type, fvPatchField, volMesh > &field, const word &fieldName) const
 

Additional Inherited Members

- Static Public Member Functions inherited from fvModel
template<class Type , class AlphaRhoFieldType , class ... AlphaRhoFieldTypes>
static dimensionSet sourceDims (const GeometricField< Type, fvPatchField, volMesh > &field, const dimensionSet &ds, const AlphaRhoFieldType &alphaRho, const AlphaRhoFieldTypes &... alphaRhos)
 Return the dimensions of the matrix of a source term. More...
 
template<class Type >
static dimensionSet sourceDims (const GeometricField< Type, fvPatchField, volMesh > &field, const dimensionSet &ds)
 Return the dimensions of the matrix of a source term (base. More...
 
static autoPtr< fvModelNew (const word &name, const dictionary &dict, const fvMesh &mesh)
 Return a reference to the selected fvModel. More...
 
- Protected Member Functions inherited from fvModel
template<class Type >
void addSupType (fvMatrix< Type > &eqn, const word &fieldName) const
 Add a source term to an equation. More...
 
template<class Type >
void addSupType (const volScalarField &rho, fvMatrix< Type > &eqn, const word &fieldName) const
 Add a source term to a compressible equation. More...
 
template<class Type >
void addSupType (const volScalarField &alpha, const volScalarField &rho, fvMatrix< Type > &eqn, const word &fieldName) const
 Add a source term to a phase equation. More...
 
template<class Type , class ... AlphaRhoFieldTypes>
tmp< fvMatrix< Type > > source (const GeometricField< Type, fvPatchField, volMesh > &field, const word &fieldName, const dimensionSet &ds, const AlphaRhoFieldTypes &... alphaRhos) const
 Return source for equation with specified name and dimensions. More...
 

Detailed Description

Heat exchanger source model, in which the heat exchanger is defined as a selection of cells.

The total heat exchange source is given by:

\[ Q_t = e(\phi, \dot{m}_2) (T_2 - T_1) \phi c_p \]

where:

$ Q_t $ = total heat source
$ e(\phi,\dot{m}_2) $ = effectiveness table
$ \phi $ = net mass flux entering heat exchanger [kg/s]
$ \dot{m}_2 $ = secondary mass flow rate [kg/s]
$ T_1 $ = primary inlet temperature [K]
$ T_2 $ = secondary inlet temperature [K]
$ c_p $ = specific heat capacity [J/kg/K]

The distribution inside the hear exchanger is given by:

\[ Q_c = \frac{V_c |U_c| (T_c - T_{ref})}{\sum(V_c |U_c| (T_c - T_{ref}))} \]

where:

$ Q_c $ = source for cell
$ V_c $ = volume of the cell [m^3]
$ U_c $ = local cell velocity [m/s]
$ T_c $ = local call temperature [K]
$ T_{ref} $ = min or max(T) in cell zone depending on the sign of Q_t [K]
Usage
Example usage:
effectivenessHeatExchangerSource1
{
    type                    effectivenessHeatExchangerSource;

    selectionMode           cellZone;
    cellZone                porosity;

    secondaryMassFlowRate   1.0;
    secondaryInletT         336;
    primaryInletT           293;

    faceZone                facesZoneInletOriented;

    effectiveness           <function2>;
}
Note
  • The effectiveness Function2 is described in terms of the primary and secondary mass flow rates and has the same units as the secondary mass flow rate and kg/s for phi.
  • faceZone is the faces at the inlet of the cellzone, it needs to be created with flip map flags. It is used to integrate the net mass flow rate into the heat exchanger
Source files

Definition at line 160 of file effectivenessHeatExchangerSource.H.

Constructor & Destructor Documentation

◆ effectivenessHeatExchangerSource() [1/2]

effectivenessHeatExchangerSource ( const word name,
const word modelType,
const dictionary dict,
const fvMesh mesh 
)

Construct from components.

Definition at line 171 of file effectivenessHeatExchangerSource.C.

◆ effectivenessHeatExchangerSource() [2/2]

Disallow default bitwise copy construction.

◆ ~effectivenessHeatExchangerSource()

Member Function Documentation

◆ TypeName()

TypeName ( "effectivenessHeatExchangerSource"  )

Runtime type information.

◆ addSupFields()

Foam::wordList addSupFields ( ) const
virtual

Return the list of fields for which the fvModel adds source term.

to the transport equation

Reimplemented from fvModel.

Definition at line 201 of file effectivenessHeatExchangerSource.C.

References effectivenessHeatExchangerSource::addSup(), basicThermo::dictName, basicThermo::he(), mesh, IOobject::name(), and thermo.

Referenced by effectivenessHeatExchangerSource::~effectivenessHeatExchangerSource().

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◆ addSup()

◆ updateMesh()

void updateMesh ( const mapPolyMesh mpm)
virtual

Update for mesh changes.

Reimplemented from fvModel.

Definition at line 315 of file effectivenessHeatExchangerSource.C.

Referenced by effectivenessHeatExchangerSource::addSup(), and effectivenessHeatExchangerSource::~effectivenessHeatExchangerSource().

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◆ read()

bool read ( const dictionary dict)
virtual

Read dictionary.

Reimplemented from fvModel.

Definition at line 323 of file effectivenessHeatExchangerSource.C.

References fvModel::read().

Referenced by effectivenessHeatExchangerSource::~effectivenessHeatExchangerSource().

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◆ operator=()

void operator= ( const effectivenessHeatExchangerSource )
delete

Disallow default bitwise assignment.

Referenced by effectivenessHeatExchangerSource::~effectivenessHeatExchangerSource().

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