Thixotropic viscosity momentum transport model based on the evolution of the structural parameter $\lambda$ : More...

Inheritance diagram for lambdaThixotropic< BasicMomentumTransportModel >:

Collaboration diagram for lambdaThixotropic< BasicMomentumTransportModel >:

Public Types
typedef BasicMomentumTransportModel::alphaField	alphaField

typedef BasicMomentumTransportModel::rhoField	rhoField

Public Types inherited from linearViscousStress< laminarModel< BasicMomentumTransportModel > >
typedef BasicMomentumTransportModel::alphaField	alphaField

typedef BasicMomentumTransportModel::rhoField	rhoField

Public Types inherited from laminarModel< BasicMomentumTransportModel >
typedef BasicMomentumTransportModel::alphaField	alphaField

typedef BasicMomentumTransportModel::rhoField	rhoField

Public Member Functions
	TypeName ("lambdaThixotropic")
	Runtime type information. More...

	lambdaThixotropic (const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity)
	Construct from components. More...

virtual	~lambdaThixotropic ()
	Destructor. More...

virtual bool	read ()
	Read momentumTransport dictionary. More...

virtual tmp< volScalarField >	nuEff () const
	Return the effective viscosity. More...

virtual tmp< scalarField >	nuEff (const label patchi) const
	Return the effective viscosity on patch. More...

virtual void	predict ()
	The lambdaThixotropic viscosity is not predicted. More...

virtual void	correct ()
	Correct the lambdaThixotropic viscosity. More...

Public Member Functions inherited from linearViscousStress< laminarModel< BasicMomentumTransportModel > >
	linearViscousStress (const word &modelName, const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity)
	Construct from components. More...

virtual	~linearViscousStress ()
	Destructor. More...

virtual tmp< volSymmTensorField >	devTau () const
	Return the effective stress tensor. More...

virtual tmp< fvVectorMatrix >	divDevTau (volVectorField &U) const
	Return the source term for the momentum equation. More...

virtual tmp< fvVectorMatrix >	divDevTau (const volScalarField &rho, volVectorField &U) const
	Return the source term for the momentum equation. More...

Public Member Functions inherited from laminarModel< BasicMomentumTransportModel >
	TypeName ("laminar")
	Runtime type information. More...

	declareRunTimeSelectionTable (autoPtr, laminarModel, dictionary,(const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity),(alpha, rho, U, alphaRhoPhi, phi, viscosity))

	laminarModel (const word &type, const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity)
	Construct from components. More...

	laminarModel (const laminarModel &)=delete
	Disallow default bitwise copy construction. More...

virtual	~laminarModel ()
	Destructor. More...

virtual const dictionary &	coeffDict () const
	Const access to the coefficients dictionary. More...

virtual tmp< volScalarField >	nut () const
	Return the turbulence viscosity, i.e. 0 for laminar flow. More...

virtual tmp< scalarField >	nut (const label patchi) const
	Return the turbulence viscosity on patch. More...

virtual tmp< volScalarField >	k () const
	Return the turbulence kinetic energy, i.e. 0 for laminar flow. More...

virtual tmp< volScalarField >	epsilon () const
	Return the turbulence kinetic energy dissipation rate,. More...

virtual tmp< volScalarField >	omega () const
	Return the turbulence specific dissipation rate,. More...

virtual tmp< volSymmTensorField >	sigma () const
	Return the stress tensor [m^2/s^2], i.e. 0 for laminar flow. More...

void	operator= (const laminarModel &)=delete
	Disallow default bitwise assignment. More...

Additional Inherited Members
Static Public Member Functions inherited from laminarModel< BasicMomentumTransportModel >
static autoPtr< laminarModel >	New (const alphaField &alpha, const rhoField &rho, const volVectorField &U, const surfaceScalarField &alphaRhoPhi, const surfaceScalarField &phi, const viscosity &viscosity)
	Return a reference to the selected laminar model. More...

Protected Member Functions inherited from laminarModel< BasicMomentumTransportModel >
virtual void	printCoeffs (const word &type)
	Print model coefficients. More...

Protected Attributes inherited from laminarModel< BasicMomentumTransportModel >
dictionary	laminarDict_
	laminar coefficients dictionary More...

Switch	printCoeffs_
	Flag to print the model coeffs at run-time. More...

dictionary	coeffDict_
	Model coefficients dictionary. More...

Detailed Description

template<class BasicMomentumTransportModel>
class Foam::laminarModels::lambdaThixotropic< BasicMomentumTransportModel >

Thixotropic viscosity momentum transport model based on the evolution of the structural parameter $\lambda$ :

$\frac{D\lambda}{Dt} = a(1 - \lambda)^b - c \lambda \dot{\gamma}^d$

The viscosity is then calculated using the expression

$\nu = \frac{\nu_{\infty}}{{1 - K \lambda}^2}$

Where the parameter K is given by:

$K = 1 - \sqrt{\frac{\nu_{\infty}}{\nu_{0}}}$

Here:

$\lambda$	=	structural parameter
	=	model coefficient
	=	model coefficient
	=	model coefficient
	=	model coefficient
$\dot{\gamma}$	=	stress rate [1/s]
$\nu_{0}$	=	limiting viscosity when $\lambda = 1$
$\nu_{\infty}$	=	limiting viscosity when $\lambda = 0$

Reference:

        Barnes H A, 1997.  Thixotropy - a review.  J. Non-Newtonian Fluid
        Mech 70, pp 1-33

Source files

Definition at line 119 of file lambdaThixotropic.H.

Member Typedef Documentation

◆ alphaField

typedef BasicMomentumTransportModel::alphaField alphaField

Definition at line 176 of file lambdaThixotropic.H.

◆ rhoField

typedef BasicMomentumTransportModel::rhoField rhoField

Definition at line 177 of file lambdaThixotropic.H.

Constructor & Destructor Documentation

◆ lambdaThixotropic()

lambdaThixotropic	(	const alphaField &	alpha,
		const rhoField &	rho,
		const volVectorField &	U,
		const surfaceScalarField &	alphaRhoPhi,
		const surfaceScalarField &	phi,
		const viscosity &	viscosity
	)

Construct from components.

Definition at line 43 of file lambdaThixotropic.C.

◆ ~lambdaThixotropic()

virtual ~lambdaThixotropic ( )

inlinevirtual

Destructor.

Definition at line 199 of file lambdaThixotropic.H.

Member Function Documentation

◆ TypeName()

TypeName ( "lambdaThixotropic< BasicMomentumTransportModel >" )

Runtime type information.

◆ read()

bool read

virtual

Read momentumTransport dictionary.

Implements linearViscousStress< laminarModel< BasicMomentumTransportModel > >.

Definition at line 157 of file lambdaThixotropic.C.

References Foam::dimTime, Foam::pow(), and Foam::sqrt().

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◆ nuEff() [1/2]

tmp< volScalarField > nuEff

virtual

Return the effective viscosity.

i.e. the lambdaThixotropic viscosity

Implements laminarModel< BasicMomentumTransportModel >.

Definition at line 188 of file lambdaThixotropic.C.

References GeometricField< Type, PatchField, GeoMesh >::New().

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◆ nuEff() [2/2]

tmp< scalarField > nuEff ( const label patchi ) const

virtual

Return the effective viscosity on patch.

Implements laminarModel< BasicMomentumTransportModel >.

Definition at line 200 of file lambdaThixotropic.C.

References patchi.

◆ predict()

virtual void predict ( )

inlinevirtual

The lambdaThixotropic viscosity is not predicted.

Reimplemented from laminarModel< BasicMomentumTransportModel >.

Definition at line 216 of file lambdaThixotropic.H.

◆ correct()

void correct

virtual

Correct the lambdaThixotropic viscosity.

Implements linearViscousStress< laminarModel< BasicMomentumTransportModel > >.

Definition at line 210 of file lambdaThixotropic.C.

References fvConstraints::constrain(), laminarModel< BasicMomentumTransportModel >::correct(), Foam::fvm::ddt(), Foam::fvc::div(), Foam::fvm::div(), fvConstraints(), fvModels(), dictionary::New(), Foam::pow(), tmp< T >::ref(), Foam::solve(), and Foam::fvm::Sp().

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

src/MomentumTransportModels/momentumTransportModels/laminar/lambdaThixotropic/lambdaThixotropic.H
src/MomentumTransportModels/momentumTransportModels/laminar/lambdaThixotropic/lambdaThixotropic.C

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

template<class BasicMomentumTransportModel> class Foam::laminarModels::lambdaThixotropic< BasicMomentumTransportModel >

Member Typedef Documentation

◆ alphaField

◆ rhoField

Constructor & Destructor Documentation

◆ lambdaThixotropic()

◆ ~lambdaThixotropic()

Member Function Documentation

◆ TypeName()

◆ read()

◆ nuEff() [1/2]

◆ nuEff() [2/2]

◆ predict()

◆ correct()

template<class BasicMomentumTransportModel>
class Foam::laminarModels::lambdaThixotropic< BasicMomentumTransportModel >