Calculation of approximate distance to nearest patch for all cells and boundary by solving Poisson's equation. More...

Inheritance diagram for Poisson:

Collaboration diagram for Poisson:

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

	Poisson (const dictionary &dict, const fvMesh &mesh, const labelHashSet &patchIDs)
	Construct from coefficients dictionary, mesh. More...

	Poisson (const fvMesh &mesh, const labelHashSet &patchIDs)
	Construct from mesh and fixed-value patch set. More...

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

virtual bool	correct (volScalarField &y)
	Correct the given distance-to-patch field. More...

virtual bool	correct (volScalarField &y, volVectorField &n)
	Correct the given distance-to-patch and normal-to-patch fields. More...

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

Public Member Functions inherited from patchDistMethod
	TypeName ("patchDistMethod")
	Runtime type information. More...

	declareRunTimeSelectionTable (autoPtr, patchDistMethod, dictionary,(const dictionary &dict, const fvMesh &mesh, const labelHashSet &patchIDs),(dict, mesh, patchIDs))

	patchDistMethod (const fvMesh &mesh, const labelHashSet &patchIDs)
	Construct from mesh and patch ID set. More...

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

virtual	~patchDistMethod ()
	Destructor. More...

const labelHashSet &	patchIndices () const
	Return the patchIDs. More...

virtual bool	movePoints ()
	Update cached geometry when the mesh moves. More...

virtual void	topoChange (const polyTopoChangeMap &)
	Update cached topology and geometry when the mesh changes. More...

virtual void	mapMesh (const polyMeshMap &)
	Update from another mesh using the given map. More...

virtual void	distribute (const polyDistributionMap &)
	Redistribute or update using the given distribution map. More...

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

template<class Type >
Foam::wordList	patchTypes (const fvMesh &mesh, const labelHashSet &patchIDs)

Additional Inherited Members
Static Public Member Functions inherited from patchDistMethod
static autoPtr< patchDistMethod >	New (const dictionary &dict, const fvMesh &mesh, const labelHashSet &patchIDs)

template<class Type >
static wordList	patchTypes (const fvMesh &mesh, const labelHashSet &patchIDs)
	Return the patch types for y and n. More...

Protected Attributes inherited from patchDistMethod
const fvMesh &	mesh_
	Reference to the mesh. More...

const labelHashSet	patchIndices_
	Set of patch IDs. More...

Detailed Description

Calculation of approximate distance to nearest patch for all cells and boundary by solving Poisson's equation.

References:

    D.B. Spalding,
    "Calculation of turbulent heat transfer in cluttered spaces",
    Proc. 10th Int. Heat Transfer Conference, Brighton, UK, (1994).

    E. Fares and W. Schroder,
    "Differential Equation for Approximate Wall Distance",
    Int.J.Numer.Meth., 39:743-762, (2002).

    P.G. Tucker,
    "Differential equation based wall distance computation for DES and
     RANS",
    J.Comp.Phys., Vol. 190, Issue 1, 1 st September, pp. 229-248 (2003)

Example of the wallDist specification in fvSchemes:

    laplacianSchemes
    {
        .
        .
        laplacian(yPsi) Gauss linear corrected;
        .
        .
    }

    wallDist
    {
        method Poisson;

        // Optional entry enabling the calculation
        // of the normal-to-wall field
        nRequired false;
    }

Also the solver specification for yPsi is required in fvSolution, e.g. for simple cases:

    yPsi
    {
        solver          PCG;
        preconditioner  DIC;
        tolerance       1e-5;
        relTol          0;
    }

or for more complex cases:

    yPsi
    {
        solver          GAMG;
        smoother        GaussSeidel;
        cacheAgglomeration true;
        nCellsInCoarsestLevel 10;
        agglomerator    faceAreaPair;
        mergeLevels     1;
        tolerance       1e-5;
        relTol          0;
    }

See also: Foam::patchDistMethod::meshWave Foam::wallDist

Source files

Definition at line 117 of file PoissonPatchDistMethod.H.

Constructor & Destructor Documentation

◆ Poisson() [1/3]

Poisson	(	const dictionary &	dict,
		const fvMesh &	mesh,
		const labelHashSet &	patchIDs
	)

Construct from coefficients dictionary, mesh.

and fixed-value patch set

Definition at line 44 of file PoissonPatchDistMethod.C.

◆ Poisson() [2/3]

Poisson	(	const fvMesh &	mesh,
		const labelHashSet &	patchIDs
	)

Construct from mesh and fixed-value patch set.

Definition at line 55 of file PoissonPatchDistMethod.C.

◆ Poisson() [3/3]

Poisson ( const Poisson & )

delete

Disallow default bitwise copy construction.

Member Function Documentation

◆ TypeName()

TypeName ( "Poisson" )

Runtime type information.

◆ correct() [1/2]

bool correct ( volScalarField & y )

virtual

Correct the given distance-to-patch field.

Implements patchDistMethod.

Definition at line 67 of file PoissonPatchDistMethod.C.

References Foam::MULES::correct(), GeometricField< Type, PatchField, GeoMesh >::null(), and y.

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◆ correct() [2/2]

bool correct	(	volScalarField &	y,
		volVectorField &	n
	)

virtual

Correct the given distance-to-patch and normal-to-patch fields.

Implements patchDistMethod.

Definition at line 73 of file PoissonPatchDistMethod.C.

References List< T >::clear(), Foam::dimLength, Foam::dimless, Foam::fvc::grad(), Foam::fvm::laplacian(), Foam::mag(), Foam::magSqr(), Foam::max(), n, GeometricField< Type, PatchField, GeoMesh >::New(), Foam::notNull(), Foam::solve(), Foam::sqr(), Foam::sqrt(), and y.

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◆ operator=()

void operator= ( const Poisson & )