Nusselt-number model using the empirical Ranz-Marshall correlation to be used in modelling of the fluid-particle heat transfer coefficient: More...

#include <RanzMarshall.H>

Inheritance diagram for RanzMarshall< CloudType >:

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Collaboration diagram for RanzMarshall< CloudType >:

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Public Member Functions
	TypeName ("RanzMarshall")
	Runtime type information.
void	operator= (const RanzMarshall &)=delete
	No copy assignment.
	RanzMarshall (const dictionary &dict, CloudType &cloud)
	Construct from dictionary.
	RanzMarshall (const RanzMarshall< CloudType > &im)
	Copy construct.
virtual autoPtr< HeatTransferModel< CloudType > >	clone () const
	Construct and return a clone.
virtual	~RanzMarshall ()=default
	Destructor.
virtual scalar	Nu (const scalar Re, const scalar Pr) const
	Return Nusselt number.
Public Member Functions inherited from HeatTransferModel< CloudType >
	TypeName ("heatTransferModel")
	Runtime type information.
	declareRunTimeSelectionTable (autoPtr, HeatTransferModel, dictionary,(const dictionary &dict, CloudType &owner),(dict, owner))
	Declare runtime constructor selection table.
void	operator= (const HeatTransferModel< CloudType > &)=delete
	No copy assignment.
	HeatTransferModel (CloudType &owner)
	Construct null from owner.
	HeatTransferModel (const dictionary &dict, CloudType &owner, const word &type)
	Construct from dictionary.
	HeatTransferModel (const HeatTransferModel< CloudType > &htm)
	Copy construct.
virtual	~HeatTransferModel ()=default
	Destructor.
bool	BirdCorrection () const noexcept
	The Bird HTC correction flag.
virtual scalar	htc (const scalar dp, const scalar Re, const scalar Pr, const scalar kappa, const scalar NCpW) const
	Return heat transfer coefficient.
Public Member Functions inherited from CloudSubModelBase< CloudType >
	CloudSubModelBase (CloudType &owner)
	Construct null from owner cloud.
	CloudSubModelBase (CloudType &owner, const dictionary &dict, const word &baseName, const word &modelType, const word &dictExt="Coeffs")
	Construct from owner cloud without name.
	CloudSubModelBase (const word &modelName, CloudType &owner, const dictionary &dict, const word &baseName, const word &modelType)
	Construct from owner cloud with name.
	CloudSubModelBase (const CloudSubModelBase< CloudType > &smb)
	Construct as copy.
virtual	~CloudSubModelBase ()=default
	Destructor.
const CloudType &	owner () const
	Return const access to the owner cloud.
virtual bool	writeTime () const
	Flag to indicate when to write a property.
virtual fileName	localPath () const
	Output directory.
CloudType &	owner ()
	Return non-const access to the owner cloud for manipulation.
virtual void	info ()
	Write to info.
virtual void	write (Ostream &os) const
	Write to os.
Public Member Functions inherited from subModelBase
	subModelBase (dictionary &properties)
	Construct null.
	subModelBase (dictionary &properties, const dictionary &dict, const word &baseName, const word &modelType, const word &dictExt="Coeffs")
	Construct from components without name.
	subModelBase (const word &modelName, dictionary &properties, const dictionary &dict, const word &baseName, const word &modelType)
	Construct from components with name.
	subModelBase (const subModelBase &smb)
	Construct as copy.
virtual	~subModelBase ()=default
	Destructor.
const word &	modelName () const
	Return const access to the name of the sub-model.
const dictionary &	dict () const
	Return const access to the cloud dictionary.
const word &	baseName () const
	Return const access to the base name of the sub-model.
const word &	modelType () const
	Return const access to the sub-model type.
const dictionary &	coeffDict () const
	Return const access to the coefficients dictionary.
const dictionary &	properties () const
	Return const access to the properties dictionary.
virtual bool	defaultCoeffs (const bool printMsg) const
	Returns true if defaultCoeffs is true and outputs on printMsg.
virtual bool	active () const
	Return the model 'active' status - default active = true.
virtual void	cacheFields (const bool store)
	Cache dependent sub-model fields.
template<class Type>
Type	getBaseProperty (const word &entryName, const Type &defaultValue=Type(Zero)) const
	Retrieve generic property from the base model.
template<class Type>
void	getBaseProperty (const word &entryName, Type &value) const
	Retrieve generic property from the base model.
template<class Type>
void	setBaseProperty (const word &entryName, const Type &value)
	Add generic property to the base model.
bool	getModelDict (const word &entryName, dictionary &dict) const
	Retrieve dictionary, return true if set.
template<class Type>
bool	getModelProperty (const word &entryName, Type &value) const
	Retrieve generic property from the sub-model.
template<class Type>
Type	getModelProperty (const word &entryName, const Type &defaultValue=Type(Zero)) const
	Retrieve generic property from the sub-model.
template<class Type>
void	setModelProperty (const word &entryName, const Type &value)
	Add generic property to the sub-model.

Additional Inherited Members
Public Types inherited from CloudSubModelBase< CloudType >
typedef CloudType	cloudType
	Type of cloud this model was instantiated for.
Static Public Member Functions inherited from HeatTransferModel< CloudType >
static autoPtr< HeatTransferModel< CloudType > >	New (const dictionary &dict, CloudType &owner)
	Selector.
Public Attributes inherited from subModelBase
bool	log
	Flag to write log into Info.
Protected Member Functions inherited from subModelBase
bool	inLine () const
	Flag to indicate whether data is/was read in-line.
Protected Attributes inherited from CloudSubModelBase< CloudType >
CloudType &	owner_
	Reference to the cloud.
Protected Attributes inherited from subModelBase
const word	modelName_
	Name of the sub-model.
dictionary &	properties_
	Reference to properties dictionary e.g. for restart.
const dictionary	dict_
	Copy of dictionary used during construction.
const word	baseName_
	Name of the sub-model base class.
const word	modelType_
	Type of the sub-model.
const dictionary	coeffDict_
	Coefficients dictionary.

Detailed Description

template<class CloudType>
class Foam::RanzMarshall< CloudType >

Nusselt-number model using the empirical Ranz-Marshall correlation to be used in modelling of the fluid-particle heat transfer coefficient:

$\‍[ \mathrm{Nu} = a + b \, \mathrm{Re}_p^{m} \, \mathrm{Pr}^{n} \‍]$

with

$\‍[ \mathrm{Re}_p = \frac{\rho_c \, | \mathbf{u}_\mathrm{rel} | \, d_p}{\mu_c} \‍]$

$\‍[ \mathrm{Pr} = \frac{ C_p \, \mu_c }{ \kappa_c } \‍]$

where

$\mathrm{Nu}$	=	Nusselt number
$\mathrm{Re}_p$	=	Particle Reynolds number
$\mathrm{Pr}$	=	Prandtl number
	=	Particle diameter
$\rho_c$	=	Density of carrier in the film surrounding particle
$\mu_c$	=	Dynamic viscosity of carrier in the film surrounding particle
$\mathbf{u}_\mathrm{rel}$	=	Relative velocity between particle and carrier
	=	Correlation coefficient
	=	Correlation coefficient
	=	Correlation exponent of particle Reynolds number
	=	Correlation exponent of Prandtl number
	=	Specific heat capacity
$\kappa_c$	=	Thermal conductivity of carrier in the film

Reference:

        Standard model:
            Ranz, W. E., & Marshall, W. R. (1952).
            Evaporation from drops - part 1.
            Chem. Eng. Prog, 48, 22, pp. 141-146.

            Ranz, W. E., & Marshall, W. R. (1952).
            Evaporation from drops - part 2.
            Chem. Eng. Prog, 48, 4, pp. 173-180.

        Expressions (tag:AOB), p. 18:
            Amsden, A. A., O'Rourke, P. J., & Butler, T. D. (1989).
            KIVA-II: A computer program for chemically
            reactive flows with sprays (No. LA-11560-MS).
            Los Alamos National Lab.(LANL), Los Alamos, NM (United States).
            DOI:10.2172/6228444

Usage

Minimal example by using constant/<CloudProperties>:

subModels
{
    // Mandatory entries
    heatTransferModel    RanzMarshall;

    // Optional entries
    RanzMarshallCoeffs
    {
        a    2.0;
        b    0.6;
        m    0.5;
        n    0.66666;
    }
}

where the entries mean:

Property	Description	Type	Reqd	Deflt
`heatTransferModel`	Type name: RanzMarshall	word	yes	-
`a`	Correlation coefficient	scalar	no	2.0
`b`	Correlation coefficient	scalar	no	0.6
`m`	Correlation exponent of particle Reynolds number	scalar	no	0.5
`n`	Correlation exponent of Prandtl number	scalar	no	1.0/3.0

Source files

Definition at line 219 of file RanzMarshall.H.

Constructor & Destructor Documentation

◆ RanzMarshall() [1/2]

template<class CloudType>

RanzMarshall	(	const dictionary &	dict,
		CloudType &	cloud )

Construct from dictionary.

Definition at line 27 of file RanzMarshall.C.

References subModelBase::coeffDict(), subModelBase::dict(), Foam::GlobalIOList< Tuple2< scalar, vector > >::typeName, and HeatTransferModel< CloudType >::HeatTransferModel().

Referenced by clone(), operator=(), and RanzMarshall().

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◆ RanzMarshall() [2/2]

template<class CloudType>

RanzMarshall ( const RanzMarshall< CloudType > & im )

Copy construct.

Definition at line 42 of file RanzMarshall.C.

References HeatTransferModel< CloudType >::HeatTransferModel(), and RanzMarshall().

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◆ ~RanzMarshall()

template<class CloudType>

virtual ~RanzMarshall ( )

virtualdefault

Destructor.

References Pr(), and Foam::Re().

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Member Function Documentation

◆ TypeName()

template<class CloudType>

TypeName ( "RanzMarshall< CloudType >" )

Runtime type information.

◆ operator=()

template<class CloudType>

void operator= ( const RanzMarshall< CloudType > & )

delete

No copy assignment.

References subModelBase::dict(), and RanzMarshall().

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◆ clone()

template<class CloudType>

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

inlinevirtual

Construct and return a clone.

Implements HeatTransferModel< CloudType >.

Definition at line 277 of file RanzMarshall.H.

References RanzMarshall().

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◆ Nu()

template<class CloudType>

Foam::scalar Nu	(	const scalar	Re,
		const scalar	Pr ) const

virtual

Return Nusselt number.

Implements HeatTransferModel< CloudType >.

Definition at line 55 of file RanzMarshall.C.

References Foam::pow(), Pr(), and Foam::Re().

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

src/lagrangian/intermediate/submodels/Thermodynamic/HeatTransferModel/RanzMarshall/RanzMarshall.H
src/lagrangian/intermediate/submodels/Thermodynamic/HeatTransferModel/RanzMarshall/RanzMarshall.C

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ RanzMarshall() [1/2]

◆ RanzMarshall() [2/2]

◆ ~RanzMarshall()

Member Function Documentation

◆ TypeName()

◆ operator=()

◆ clone()

◆ Nu()