The turbulentDFSEMInlet is a synthesised-eddy based velocity inlet boundary condition to generate synthetic turbulence-alike time-series from a given set of turbulence statistics for LES and hybrid RANS-LES computations. More...

Inheritance diagram for turbulentDFSEMInletFvPatchVectorField:

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Collaboration diagram for turbulentDFSEMInletFvPatchVectorField:

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Public Member Functions
	TypeName ("turbulentDFSEMInlet")

	turbulentDFSEMInletFvPatchVectorField (const fvPatch &, const DimensionedField< vector, volMesh > &)

	turbulentDFSEMInletFvPatchVectorField (const fvPatch &, const DimensionedField< vector, volMesh > &, const dictionary &)

	turbulentDFSEMInletFvPatchVectorField (const turbulentDFSEMInletFvPatchVectorField &, const fvPatch &, const DimensionedField< vector, volMesh > &, const fvPatchFieldMapper &)

	turbulentDFSEMInletFvPatchVectorField (const turbulentDFSEMInletFvPatchVectorField &)

virtual tmp< fvPatchVectorField >	clone () const

	turbulentDFSEMInletFvPatchVectorField (const turbulentDFSEMInletFvPatchVectorField &, const DimensionedField< vector, volMesh > &)

virtual tmp< fvPatchVectorField >	clone (const DimensionedField< vector, volMesh > &iF) const

virtual	~turbulentDFSEMInletFvPatchVectorField ()=default

virtual void	autoMap (const fvPatchFieldMapper &m)

virtual void	rmap (const fvPatchVectorField &ptf, const labelList &addr)

virtual void	updateCoeffs ()

virtual void	write (Ostream &) const

Static Public Member Functions
static bool	checkStresses (const symmTensorField &Rf)

Detailed Description

The turbulentDFSEMInlet is a synthesised-eddy based velocity inlet boundary condition to generate synthetic turbulence-alike time-series from a given set of turbulence statistics for LES and hybrid RANS-LES computations.

Reference:

    Standard model (tag:PCR):
        Poletto, R., Craft, T., & Revell, A. (2013).
        A new divergence free synthetic eddy method for
        the reproduction of inlet flow conditions for LES.
        Flow, turbulence and combustion, 91(3), 519-539.
        DOI:10.1007/s10494-013-9488-2

    Expression for the average length scale (tag:SST):
        Shur, M., Strelets, M., Travin, A.,
        Probst, A., Probst, S., Schwamborn, D., ... & Revell, A. (2018).
        Improved embedded approaches.
        In: Mockett C., Haase W., Schwamborn D. (eds)
        Go4Hybrid: Grey area mitigation for hybrid RANS-LES methods.
        Notes on Numerical Fluid Mechanics and Multidisciplinary Design.
        p. 51-87. Springer, Cham.
        DOI:10.1007/978-3-319-52995-0_3

Usage

Example of the boundary condition specification:

<patchName>
{
    // Mandatory entries
    type            turbulentDFSEMInlet;
    delta           <scalar>;
    R               <PatchFunction1>;
    U               <PatchFunction1>;
    L               <PatchFunction1>;

        // e.g.
        // R        uniform (<Rxx> <Rxy> <Rxz> <Ryy> <Ryz> <Rzz>);
        // U        uniform (<Ux> <Uy> <Uz>);
        // L        uniform <L>;

    // Optional entries
    d               <scalar>;
    nCellPerEddy    <label>;
    kappa           <scalar>;
    Uref            <scalar>;
    Lref            <scalar>;
    scale           <scalar>;
    m               <scalar>;
    writeEddies     <bool>;

    // Inherited entries
    ...
}

where the entries mean:

Property	Description	Type	Reqd	Deflt
`type`	Type name: turbulentDFSEMInlet	word	yes	-
`delta`	Characteristic length scale	scalar	yes	-
`R`	Reynolds-stress tensor field	PatchFunction1<symmTensor>	yes	-
`U`	Mean velocity field	PatchFunction1<vector>	yes	-
`L`	Integral-length scale field	PatchFunction1<scalar>	yes	-
`d`	Ratio of sum of eddy volumes to eddy box volume i.e. eddy density (fill fraction)	scalar	no	1.0
`nCellPerEddy`	Minimum eddy length in units of number of cells	label	no	5
`kappa`	von Karman constant	scalar	no	0.41
`Uref`	Normalisation factor for Reynolds-stress tensor and mean velocity	scalar	no	1.0
`Lref`	Normalisation factor for integral-length scale	scalar	no	1.0
`scale`	Heuristic scaling factor being applied on the normalisation factor C1	scalar	no	1.0
`m`	The power of V defined in C1	scalar	no	0.5
`writeEddies`	Flag to write eddies as OBJ file	bool	no	false

The inherited entries are elaborated in:

Note

The delta value typically represents the characteristic scale of flow or flow domain, e.g. a channel half height for plane channel flows.
nCellPerEddy and scale entries are heuristic entries which do not exist in the standard method, yet are necessary to reproduce the results published in the original journal paper.
In the original journal paper, C1 in Eq. 11 is not dimensionless. It is not clear whether this dimensionality issue was intentional. To alleviate this matter, users can alter the input entry m, which is the power of the eddy-box volume defined in the C1, to obtain a dimensionless C1 coefficient. The default value of m is 0.5, which is the value stated in the original journal paper, and m=1/3 leads to a dimensionless C1.

Source files

Definition at line 254 of file turbulentDFSEMInletFvPatchVectorField.H.

Constructor & Destructor Documentation

◆ turbulentDFSEMInletFvPatchVectorField() [1/5]

turbulentDFSEMInletFvPatchVectorField	(	const fvPatch &	p,
		const DimensionedField< vector, volMesh > &	iF
	)

Definition at line 605 of file turbulentDFSEMInletFvPatchVectorField.C.

Referenced by turbulentDFSEMInletFvPatchVectorField::clone().

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◆ turbulentDFSEMInletFvPatchVectorField() [2/5]

turbulentDFSEMInletFvPatchVectorField	(	const fvPatch &	p,
		const DimensionedField< vector, volMesh > &	iF,
		const dictionary &	dict
	)

Definition at line 687 of file turbulentDFSEMInletFvPatchVectorField.C.

References Foam::expressions::patchExpr::debug, eddy::debug, R, and Foam::sqr().

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◆ turbulentDFSEMInletFvPatchVectorField() [3/5]

turbulentDFSEMInletFvPatchVectorField	(	const turbulentDFSEMInletFvPatchVectorField &	ptf,
		const fvPatch &	p,
		const DimensionedField< vector, volMesh > &	iF,
		const fvPatchFieldMapper &	mapper
	)

Definition at line 645 of file turbulentDFSEMInletFvPatchVectorField.C.

◆ turbulentDFSEMInletFvPatchVectorField() [4/5]

turbulentDFSEMInletFvPatchVectorField ( const turbulentDFSEMInletFvPatchVectorField & ptf )

Definition at line 735 of file turbulentDFSEMInletFvPatchVectorField.C.

◆ turbulentDFSEMInletFvPatchVectorField() [5/5]

turbulentDFSEMInletFvPatchVectorField	(	const turbulentDFSEMInletFvPatchVectorField &	ptf,
		const DimensionedField< vector, volMesh > &	iF
	)

Definition at line 774 of file turbulentDFSEMInletFvPatchVectorField.C.

◆ ~turbulentDFSEMInletFvPatchVectorField()

virtual ~turbulentDFSEMInletFvPatchVectorField ( )

virtualdefault

Member Function Documentation

◆ TypeName()

TypeName ( "turbulentDFSEMInlet" )

◆ clone() [1/2]

virtual tmp<fvPatchVectorField> clone ( ) const

inlinevirtual

Definition at line 425 of file turbulentDFSEMInletFvPatchVectorField.H.

References turbulentDFSEMInletFvPatchVectorField::turbulentDFSEMInletFvPatchVectorField().

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◆ clone() [2/2]

virtual tmp<fvPatchVectorField> clone ( const DimensionedField< vector, volMesh > & iF ) const

inlinevirtual

Definition at line 442 of file turbulentDFSEMInletFvPatchVectorField.H.

References turbulentDFSEMInletFvPatchVectorField::turbulentDFSEMInletFvPatchVectorField().

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◆ checkStresses()

bool checkStresses ( const symmTensorField & Rf )

static

Definition at line 815 of file turbulentDFSEMInletFvPatchVectorField.C.

References Foam::expressions::patchExpr::debug, Foam::endl(), Foam::exit(), Foam::FatalError, FatalErrorInFunction, forAll, Foam::Pout, R, Foam::sqr(), and Foam::sqrt().

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◆ autoMap()

void autoMap ( const fvPatchFieldMapper & m )

virtual

Definition at line 883 of file turbulentDFSEMInletFvPatchVectorField.C.

References fvPatchField< Type >::autoMap().

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◆ rmap()

void rmap	(	const fvPatchVectorField &	ptf,
		const labelList &	addr
	)

virtual

Definition at line 907 of file turbulentDFSEMInletFvPatchVectorField.C.

References fvPatchField< Type >::rmap().

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◆ updateCoeffs()

void updateCoeffs ( )

virtual

Definition at line 934 of file turbulentDFSEMInletFvPatchVectorField.C.

References Foam::constant::universal::c, Foam::expressions::patchExpr::debug, Foam::endl(), forAll, Foam::gMax(), Foam::gMin(), Foam::gSum(), Foam::Info, n, UPstream::nProcs(), UPstream::parRun(), Foam::foamVersion::patch, Foam::pow(), Foam::returnReduce(), Foam::sqrt(), timeIndex, U, and UMean().

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◆ write()

void write ( Ostream & os ) const

virtual

Definition at line 1050 of file turbulentDFSEMInletFvPatchVectorField.C.

References os(), fvPatchField::write(), Ostream::writeEntry(), and Ostream::writeEntryIfDifferent().

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

src/finiteVolume/fields/fvPatchFields/derived/turbulentDFSEMInlet/turbulentDFSEMInletFvPatchVectorField.H
src/finiteVolume/fields/fvPatchFields/derived/turbulentDFSEMInlet/turbulentDFSEMInletFvPatchVectorField.C

Public Member Functions

Static Public Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ turbulentDFSEMInletFvPatchVectorField() [1/5]

◆ turbulentDFSEMInletFvPatchVectorField() [2/5]

◆ turbulentDFSEMInletFvPatchVectorField() [3/5]

◆ turbulentDFSEMInletFvPatchVectorField() [4/5]

◆ turbulentDFSEMInletFvPatchVectorField() [5/5]

◆ ~turbulentDFSEMInletFvPatchVectorField()

Member Function Documentation

◆ TypeName()

◆ clone() [1/2]

◆ clone() [2/2]

◆ checkStresses()

◆ autoMap()

◆ rmap()

◆ updateCoeffs()

◆ write()