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

Inheritance diagram for RanzMarshall< CloudType >:

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Collaboration diagram for RanzMarshall< CloudType >:

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Public Member Functions
	TypeName ("RanzMarshall")

void	operator= (const RanzMarshall &)=delete

	RanzMarshall (const dictionary &dict, CloudType &cloud)

	RanzMarshall (const RanzMarshall< CloudType > &im)

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

virtual	~RanzMarshall ()=default

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

Public Member Functions inherited from HeatTransferModel< CloudType >
	TypeName ("heatTransferModel")

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

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

	HeatTransferModel (CloudType &owner)

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

	HeatTransferModel (const HeatTransferModel< CloudType > &htm)

virtual autoPtr< HeatTransferModel< CloudType > >	clone () const=0

virtual	~HeatTransferModel ()=default

bool	BirdCorrection () const noexcept

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

Additional Inherited Members
Static Public Member Functions inherited from HeatTransferModel< CloudType >
static autoPtr< HeatTransferModel< CloudType > >	New (const dictionary &dict, CloudType &owner)

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]

RanzMarshall	(	const dictionary &	dict,
		CloudType &	cloud
	)

Definition at line 28 of file RanzMarshall.C.

◆ RanzMarshall() [2/2]

RanzMarshall ( const RanzMarshall< CloudType > & im )

Definition at line 42 of file RanzMarshall.C.

◆ ~RanzMarshall()

virtual ~RanzMarshall ( )

virtualdefault

Member Function Documentation

◆ TypeName()

TypeName ( "RanzMarshall< CloudType >" )

◆ operator=()

void operator= ( const RanzMarshall< CloudType > & )

delete

◆ clone()

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

inlinevirtual

Definition at line 259 of file RanzMarshall.H.

◆ Nu()

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

virtual

Implements HeatTransferModel< CloudType >.

Definition at line 56 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