Creates a size distribution via interrogating a continuous phase fraction field. More...

Inheritance diagram for regionSizeDistribution:

Collaboration diagram for regionSizeDistribution:

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

	regionSizeDistribution (const word &name, const Time &runTime, const dictionary &)
	Construct for given objectRegistry and dictionary. More...

virtual	~regionSizeDistribution ()

virtual bool	read (const dictionary &)
	Read the regionSizeDistribution data. More...

virtual bool	execute ()
	Do nothing. More...

virtual bool	write ()
	Calculate the regionSizeDistribution and write. More...

template<class Type >
Foam::Map< Type >	regionSum (const regionSplit &regions, const Field< Type > &fld) const

template<class Type >
Foam::List< Type >	extractData (const UList< label > &keys, const Map< Type > &regionData) const

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

	fvMeshFunctionObject (const word &name, const Time &runTime, const dictionary &dict)
	Construct from Time and dictionary. More...

	fvMeshFunctionObject (const word &name, const objectRegistry &obr, const dictionary &dict)
	Construct from the region objectRegistry and dictionary. More...

virtual	~fvMeshFunctionObject ()
	Destructor. More...

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

	regionFunctionObject (const word &name, const Time &runTime, const dictionary &dict)
	Construct from Time and dictionary. More...

	regionFunctionObject (const word &name, const objectRegistry &obr, const dictionary &dict)
	Construct from the region objectRegistry and dictionary. More...

virtual	~regionFunctionObject ()
	Destructor. More...

Public Member Functions inherited from functionObject
virtual const word &	type () const =0
	Runtime type information. More...

	declareRunTimeSelectionTable (autoPtr, functionObject, dictionary,(const word &name, const Time &runTime, const dictionary &dict),(name, runTime, dict))

	functionObject (const word &name)
	Construct from components. More...

autoPtr< functionObject >	clone () const
	Return clone. More...

virtual	~functionObject ()
	Destructor. More...

const word &	name () const
	Return the name of this functionObject. More...

virtual bool	end ()
	Called when Time::run() determines that the time-loop exits. More...

virtual bool	adjustTimeStep ()
	Called at the end of Time::adjustDeltaT() if adjustTime is true. More...

virtual void	updateMesh (const mapPolyMesh &mpm)
	Update for changes of mesh. More...

virtual void	movePoints (const polyMesh &mesh)
	Update for changes of mesh. More...

Additional Inherited Members
Static Public Member Functions inherited from functionObject
static autoPtr< functionObject >	New (const word &name, const Time &, const dictionary &)
	Select from dictionary, based on its "type" entry. More...

Public Attributes inherited from functionObject
Switch	log
	Switch write log to Info. More...

Static Public Attributes inherited from functionObject
static int	debug

static bool	postProcess
	Global post-processing mode switch. More...

Protected Member Functions inherited from regionFunctionObject
template<class ObjectType >
bool	foundObject (const word &fieldName) const
	Find field in the objectRegistry. More...

template<class ObjectType >
const ObjectType &	lookupObject (const word &fieldName) const
	Lookup object from the objectRegistry. More...

template<class ObjectType >
ObjectType &	lookupObjectRef (const word &fieldName)
	Lookup non-const object reference from the objectRegistry. More...

template<class ObjectType >
bool	store (word &fieldName, const tmp< ObjectType > &tfield, bool cacheable=false)
	Store the given field in the objectRegistry under the given name. More...

bool	writeObject (const word &fieldName)
	Write field if present in objectRegistry. More...

bool	clearObject (const word &fieldName)
	Clear field from the objectRegistry if present. More...

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

Protected Attributes inherited from regionFunctionObject
const Time &	time_
	Reference to the Time. More...

const objectRegistry &	obr_
	Reference to the region objectRegistry. More...

Detailed Description

Creates a size distribution via interrogating a continuous phase fraction field.

Looks up a phase-fraction (alpha) field and splits the mesh into regions based on where the field is below the threshold value. These regions ("droplets") can now be analysed.

Regions:

print the regions connected to a user-defined set of patches. (in spray calculation these form the liquid core)
print the regions with too large volume. These are the 'background' regions.
(debug) write regions as a volScalarField
(debug) print for all regions the sum of volume and alpha*volume

Output (volume scalar) fields include:

alpha_liquidCore : alpha with outside liquid core set to 0
alpha_background : alpha with outside background set to 0.

Histogram:

determine histogram of diameter (given minDiameter, maxDiameter, nBins)
write graph of number of droplets per bin
write graph of sum, average and deviation of droplet volume per bin
write graph of sum, average and deviation of user-defined fields. For volVectorFields these are those of the 3 components and the magnitude.

Example of function object specification:

regionSizeDistribution1
{
    type            regionSizeDistribution;
    libs            ("libfieldFunctionObjects.so");
    ...
    field           alpha;
    patches         (inlet);
    threshold       0.4;
    fields          (p U);
    nBins           100;
    maxDiameter     0.5e-4;
    minDiameter     0;
    setFormat       gnuplot;
    coordinateSystem
    {
        type            cartesian;
        origin          (0 0 0);
        e3              (0 1 1);
        e1              (1 0 0);
    }
}

Usage

Property	Description	Required	Default value
`type`	type name: regionSizeDistribution	yes
`field`	phase field to interrogate	yes
`patches`	patches from which the liquid core is identified	yes
`threshold`	phase fraction applied to delimit regions	yes
`fields`	fields to sample	yes
`nBins`	number of bins for histogram	yes
`maxDiameter`	maximum region equivalent diameter	yes
`minDiameter`	minimum region equivalent diameter	no	0
`setFormat`	writing format	yes
`coordinateSystem`	transformation for vector fields	no

See also: Foam::functionObject Foam::functionObjects::fvMeshFunctionObject Foam::functionObjects::writeFile

Source files

Definition at line 187 of file regionSizeDistribution.H.

Constructor & Destructor Documentation

◆ regionSizeDistribution()

regionSizeDistribution	(	const word &	name,
		const Time &	runTime,
		const dictionary &	dict
	)

Construct for given objectRegistry and dictionary.

Allow the possibility to load fields from files

Definition at line 326 of file regionSizeDistribution.C.

References Foam::read().

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◆ ~regionSizeDistribution()

~regionSizeDistribution ( )

virtual

Definition at line 343 of file regionSizeDistribution.C.

Member Function Documentation

◆ TypeName()

TypeName ( "regionSizeDistribution" )

Runtime type information.

◆ read()

bool read ( const dictionary & dict )

virtual

Read the regionSizeDistribution data.

Reimplemented from regionFunctionObject.

Definition at line 349 of file regionSizeDistribution.C.

References Foam::endl(), format(), dictionary::found(), Foam::Info, dictionary::lookup(), writer< Type >::New(), and dictionary::readIfPresent().

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◆ execute()

bool execute ( )

virtual

Do nothing.

Implements functionObject.

Definition at line 375 of file regionSizeDistribution.C.

◆ write()

bool write ( )

virtual

Calculate the regionSizeDistribution and write.

Implements functionObject.

Definition at line 381 of file regionSizeDistribution.C.

References alphaPtr, HashTable< T, Key, Hash >::begin(), HashTable< T, label, Hash< label > >::begin(), GeometricField< Type, PatchField, GeoMesh >::boundaryField(), Foam::cbrt(), Field< Type >::component(), VectorSpace< Vector< scalar >, scalar, 3 >::componentNames, fvPatchField< Type >::coupled(), delta, Foam::dimless, Foam::fvc::domainIntegrate(), HashTableCore::end(), Foam::endl(), HashTable< T, label, Hash< label > >::erase(), HashTable< T, Key, Hash >::erase(), Foam::findStrings(), fld(), forAll, forAllConstIter(), forAllIter, HashTable< T, Key, Hash >::found(), Foam::gSum(), Foam::Info, HashTable< T, Key, Hash >::iteratorBase::key(), Foam::mag(), UPstream::master(), IOobject::MUST_READ, Foam::name(), IOobject::name(), VectorSpace< Vector< scalar >, scalar, 3 >::nComponents, Foam::nl, IOobject::NO_READ, IOobject::NO_WRITE, regionSplit::nRegions(), fvPatch::patch(), fvPatchField< Type >::patch(), patchi, fvPatchField< Type >::patchInternalField(), fvPatchField< Type >::patchNeighbourField(), Foam::constant::mathematical::pi(), Foam::pow(), GeometricField< Type, PatchField, GeoMesh >::primitiveField(), autoPtr< T >::reset(), List< T >::size(), HashTable< T, label, Hash< label > >::sortedToc(), polyPatch::start(), token::TAB, Foam::type(), Field< Type >::typeName, autoPtr< T >::valid(), regIOobject::write(), and x.

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◆ regionSum()

Foam::Map<Type> regionSum	(	const regionSplit &	regions,
		const Field< Type > &	fld
	)		const

Definition at line 34 of file regionSizeDistributionTemplates.C.

References forAll, and regionSplit::nRegions().

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◆ extractData()

Foam::List<Type> extractData	(	const UList< label > &	keys,
		const Map< Type > &	regionData
	)		const

Definition at line 65 of file regionSizeDistributionTemplates.C.

References forAll, and UList< T >::size().

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

src/functionObjects/field/regionSizeDistribution/regionSizeDistribution.H
src/functionObjects/field/regionSizeDistribution/regionSizeDistribution.C
src/functionObjects/field/regionSizeDistribution/regionSizeDistributionTemplates.C

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ regionSizeDistribution()

◆ ~regionSizeDistribution()

Member Function Documentation

◆ TypeName()

◆ read()

◆ execute()

◆ write()

◆ regionSum()

◆ extractData()