Public Member Functions | Static Public Member Functions | List of all members
HeatTransferModel< CloudType > Class Template Referenceabstract
Lagrangian particle models » Submodels » Thermodynamic » Heat transfer

Templated class to calculate the fluid-particle heat transfer coefficients based on a specified Nusselt-number model. More...

Inheritance diagram for HeatTransferModel< CloudType >:
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Public Member Functions

 TypeName ("heatTransferModel")
 Runtime type information. More...
 
 declareRunTimeSelectionTable (autoPtr, HeatTransferModel, dictionary,(const dictionary &dict, CloudType &owner),(dict, owner))
 Declare runtime constructor selection table. More...
 
void operator= (const HeatTransferModel< CloudType > &)=delete
 No copy assignment. More...
 
 HeatTransferModel (CloudType &owner)
 Construct null from owner. More...
 
 HeatTransferModel (const dictionary &dict, CloudType &owner, const word &type)
 Construct from dictionary. More...
 
 HeatTransferModel (const HeatTransferModel< CloudType > &htm)
 Copy construct. More...
 
virtual autoPtr< HeatTransferModel< CloudType > > clone () const =0
 Construct and return a clone. More...
 
virtual ~HeatTransferModel ()=default
 Destructor. More...
 
bool BirdCorrection () const noexcept
 The Bird HTC correction flag. More...
 
virtual scalar Nu (const scalar Re, const scalar Pr) const =0
 Return Nusselt number. More...
 
virtual scalar htc (const scalar dp, const scalar Re, const scalar Pr, const scalar kappa, const scalar NCpW) const
 Return heat transfer coefficient. More...
 

Static Public Member Functions

static autoPtr< HeatTransferModel< CloudType > > New (const dictionary &dict, CloudType &owner)
 Selector. More...
 

Detailed Description

template<class CloudType>
class Foam::HeatTransferModel< CloudType >

Templated class to calculate the fluid-particle heat transfer coefficients based on a specified Nusselt-number model.

\[ h = \frac{\mathrm{Nu} \, \kappa}{d_p} \]

where

\( h \) = Convective heat transfer coefficient of the flow
\( \mathrm{Nu} \) = Nusselt number
\( \kappa \) = Thermal conductivity of carrier in the film
\( d_p \) = Particle diameter

Optionally, Bird-Stewart-Lightfoot correction can be applied to correct the heat transfer coefficient for evaporation:

\[ h_{corr} = h \, \frac{\beta}{ \exp(\beta) + 1 } \]

with

\[ \beta = \frac{N \, C_p \, W}{h} \]

where

\( \beta \) = Correction factor
\( N \) = Molar flux
\( C_p \) = Specific heat capacity
\( W \) = Molecular weight

Reference: 

        Bird, R. B., Stewart, W. E., & Lightfoot, E. N. (1960).
        Transport phenomena.
        John Wiley & Sons., New York.
        DOI:10.1002/aic.690070245
Usage
Minimal example by using constant/<CloudProperties>: 
subModels
{
    heatTransferModel    <model>;

    <model>Coeffs
    {
        BirdCorrection   true;
    }
}

where the entries mean:

Property Description Type Reqd Deflt
heatTransferModel Type name: <model> word yes -
<model>Coeffs Model properties dict cndtnl -
BirdCorrection Flag to apply Bird-Stewart-Lightfoot's correction to the heat transfer coefficient bool cndtnl -

Options for the <model> entry: 

      RanzMarshall   | Ranz-Marshall correlation for Nusselt number
      none           | No active model
Source files

Definition at line 59 of file ThermoCloud.H.

Constructor & Destructor Documentation

◆ HeatTransferModel() [1/3]

HeatTransferModel ( CloudType &  owner)

Construct null from owner.

Definition at line 34 of file HeatTransferModel.C.

◆ HeatTransferModel() [2/3]

HeatTransferModel ( const dictionary &  dict,
CloudType &  owner,
const word &  type 
)

Construct from dictionary.

Definition at line 43 of file HeatTransferModel.C.

◆ HeatTransferModel() [3/3]

HeatTransferModel ( const HeatTransferModel< CloudType > &  htm)

Copy construct.

Definition at line 56 of file HeatTransferModel.C.

◆ ~HeatTransferModel()

virtual ~HeatTransferModel ( )
virtualdefault

Destructor.

Member Function Documentation

◆ TypeName()

TypeName ( "heatTransferModel"  )

Runtime type information.

◆ declareRunTimeSelectionTable()

declareRunTimeSelectionTable ( autoPtr  ,
HeatTransferModel< CloudType >  ,
dictionary  ,
(const dictionary &dict, CloudType &owner)  ,
(dict, owner)   
)

Declare runtime constructor selection table.

◆ operator=()

void operator= ( const HeatTransferModel< CloudType > &  )
delete

No copy assignment.

◆ clone()

virtual autoPtr<HeatTransferModel<CloudType> > clone ( ) const
pure virtual

Construct and return a clone.

Implemented in RanzMarshall< CloudType >, and NoHeatTransfer< CloudType >.

◆ New()

Foam::autoPtr< Foam::HeatTransferModel< CloudType > > New ( const dictionary &  dict,
CloudType &  owner 
)
static

Selector.

Definition at line 36 of file HeatTransferModelNew.C.

◆ BirdCorrection()

bool BirdCorrection ( ) const
inlinenoexcept

The Bird HTC correction flag.

Definition at line 257 of file HeatTransferModel.H.

◆ Nu()

virtual scalar Nu ( const scalar  Re,
const scalar  Pr 
) const
pure virtual

Return Nusselt number.

Implemented in RanzMarshall< CloudType >, and NoHeatTransfer< CloudType >.

◆ htc()

Foam::scalar htc ( const scalar  dp,
const scalar  Re,
const scalar  Pr,
const scalar  kappa,
const scalar  NCpW 
) const
virtual

Return heat transfer coefficient.

Definition at line 69 of file HeatTransferModel.C.

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