Calculates the forces and moments by integrating the pressure and skin-friction forces over a given list of patches. More...

#include <forces/forces.H>

Detailed Description

Calculates the forces and moments by integrating the pressure and skin-friction forces over a given list of patches.

Member function calcForcesMoment()calculates and returns the forces and moments.

Member function forces::write() calls calcForcesMoment() and writes the forces and moments into the file <timeDir>/forces.dat

Source files

Definition at line 68 of file forces.H.

Inheritance diagram for forces:

Collaboration diagram for forces:

List of all members.

Classes
class	sumOp
	Sum operation class to accumulate the pressure, viscous forces and moments. More...

Public Types
typedef Tuple2< vector, vector >	pressureViscous
typedef Tuple2 < pressureViscous, pressureViscous >	forcesMoments

Public Member Functions
	TypeName ("forces")
	Runtime type information.
	forces (const word &name, const objectRegistry &, const dictionary &, const bool loadFromFiles=false)
	Construct for given objectRegistry and dictionary.
virtual	~forces ()
	Destructor.
virtual const word &	name () const
	Return name of the set of forces.
virtual void	read (const dictionary &)
	Read the forces data.
virtual void	execute ()
	Execute, currently does nothing.
virtual void	end ()
	Execute at the final time-loop, currently does nothing.
virtual void	write ()
	Write the forces.
virtual forcesMoments	calcForcesMoment () const
	Calculate and return forces and moment.
virtual void	updateMesh (const mapPolyMesh &)
	Update for changes of mesh.
virtual void	movePoints (const pointField &)
	Update for changes of mesh.

Protected Member Functions
void	makeFile ()
	If the forces file has not been created create it.
virtual void	writeFileHeader ()
	Output file header information.
tmp< volSymmTensorField >	devRhoReff () const
	Return the effective viscous stress (laminar + turbulent).
tmp< volScalarField >	rho () const
	Return rho if rhoName is specified otherwise rhoRef.
scalar	rho (const volScalarField &p) const
	Return rhoRef if the pressure field is dynamic, i.e. p/rho.
	forces (const forces &)
	Disallow default bitwise copy construct.
void	operator= (const forces &)
	Disallow default bitwise assignment.

Protected Attributes
word	name_
	Name of this set of forces,.
const objectRegistry &	obr_
bool	active_
	on/off switch
Switch	log_
	Switch to send output to Info as well as to file.
labelHashSet	patchSet_
	Patches to integrate forces over.
word	pName_
	Name of pressure field.
word	UName_
	Name of velocity field.
word	rhoName_
	Name of density field (optional)
Switch	directForceDensity_
	Is the force density being supplied directly?
word	fDName_
	The name of the force density (fD) field.
scalar	rhoRef_
	Reference density needed for incompressible calculations.
scalar	pRef_
	Reference pressure.
vector	CofR_
	Centre of rotation.
autoPtr< OFstream >	forcesFilePtr_
	Forces/moment file ptr.

Member Typedef Documentation

typedef Tuple2<vector, vector> pressureViscous

Definition at line 73 of file forces.H.

typedef Tuple2<pressureViscous, pressureViscous> forcesMoments

Definition at line 77 of file forces.H.

Constructor & Destructor Documentation

forces ( const forces & )

protected

Disallow default bitwise copy construct.

forces	(	const word &	name,
		const objectRegistry &	obr,
		const dictionary &	dict,
		const bool	loadFromFiles = `false`
	)

Construct for given objectRegistry and dictionary.

Allow the possibility to load fields from files

Definition at line 174 of file forces.C.

References Foam::endl(), and WarningIn.

~forces ( )

virtual

Destructor.

Definition at line 219 of file forces.C.

Member Function Documentation

void makeFile ( )

protected

If the forces file has not been created create it.

Definition at line 302 of file forces.C.

References Foam::endl(), Foam::Info, Pstream::master(), Foam::mkDir(), Pstream::parRun(), fileName::path(), and Foam::type().

void writeFileHeader ( )

protectedvirtual

Output file header information.

Reimplemented in forceCoeffs.

Definition at line 343 of file forces.C.

References Foam::endl(), and Foam::tab.

Foam::tmp< Foam::volSymmTensorField > devRhoReff ( ) const

protected

Return the effective viscous stress (laminar + turbulent).

Definition at line 49 of file forces.C.

References Foam::dev(), Foam::exit(), Foam::FatalError, FatalErrorIn, objectRegistry::foundObject(), Foam::fvc::grad(), dictionary::lookup(), objectRegistry::lookupObject(), basicThermo::mu(), nu, singlePhaseTransportModel::nu(), GeometricField< symmTensor, fvPatchField, volMesh >::null(), forces::obr_, RASModel(), forces::rho(), thermo, transportProperties(), Foam::twoSymm(), U, and forces::UName_.

Foam::tmp< Foam::volScalarField > rho ( ) const

protected

Return rho if rhoName is specified otherwise rhoRef.

Definition at line 123 of file forces.C.

References Foam::dimDensity, mesh, fvMesh::time(), and Time::timeName().

Referenced by forces::devRhoReff().

Foam::scalar rho ( const volScalarField & p ) const

protected

Return rhoRef if the pressure field is dynamic, i.e. p/rho.

otherwise return 1

Definition at line 151 of file forces.C.

References DimensionedField< Type, GeoMesh >::dimensions(), Foam::dimPressure, Foam::exit(), Foam::FatalError, and FatalErrorIn.

void operator= ( const forces & )

protected

Disallow default bitwise assignment.

TypeName ( "forces" )

Runtime type information.

virtual const word& name ( ) const

inlinevirtual

Return name of the set of forces.

Definition at line 208 of file forces.H.

References forces::name_.

void read ( const dictionary & dict )

virtual

Read the forces data.

Reimplemented in forceCoeffs.

Definition at line 225 of file forces.C.

References polyMesh::boundaryMesh(), Foam::endl(), Foam::Info, dictionary::lookup(), dictionary::lookupOrDefault(), mesh, Foam::nl, polyBoundaryMesh::patchSet(), dictionary::readIfPresent(), Foam::readScalar(), and WarningIn.

Referenced by forceCoeffs::read().

void execute ( )

virtual

Execute, currently does nothing.

Reimplemented in forceCoeffs.

Definition at line 355 of file forces.C.

void end ( )

virtual

Execute at the final time-loop, currently does nothing.

Reimplemented in forceCoeffs.

Definition at line 361 of file forces.C.

void write ( )

virtual

Write the forces.

Reimplemented in forceCoeffs.

Definition at line 367 of file forces.C.

References Foam::endl(), Tuple2< Type1, Type2 >::first(), Foam::Info, Pstream::master(), Foam::nl, Tuple2< Type1, Type2 >::second(), and Foam::tab.

Foam::forces::forcesMoments calcForcesMoment ( ) const

virtual

Calculate and return forces and moment.

Definition at line 392 of file forces.C.

References GeometricField< Type, PatchField, GeoMesh >::boundaryField(), Tuple2< Type1, Type2 >::first(), forAllConstIter, Foam::mag(), mesh, DimensionedField< Type, GeoMesh >::mesh(), p, patchi, Foam::reduce(), rho, Tuple2< Type1, Type2 >::second(), Foam::sum(), U, and Vector< scalar >::zero.

Referenced by sixDoFRigidBodyDisplacementPointPatchVectorField::updateCoeffs(), and forceCoeffs::write().

virtual void updateMesh ( const mapPolyMesh & )

inlinevirtual

Update for changes of mesh.

Definition at line 229 of file forces.H.

virtual void movePoints ( const pointField & )

inlinevirtual

Update for changes of mesh.

Definition at line 233 of file forces.H.

Member Data Documentation

word name_

protected

Name of this set of forces,.

Also used as the name of the probes directory.

Definition at line 113 of file forces.H.

Referenced by forces::name().

const objectRegistry& obr_

protected

Definition at line 115 of file forces.H.

Referenced by forces::devRhoReff().

bool active_

protected

on/off switch

Definition at line 118 of file forces.H.

Switch log_

protected

Switch to send output to Info as well as to file.

Definition at line 121 of file forces.H.

labelHashSet patchSet_

protected

Patches to integrate forces over.

Definition at line 126 of file forces.H.

word pName_

protected

Name of pressure field.

Definition at line 129 of file forces.H.

word UName_

protected

Name of velocity field.

Definition at line 132 of file forces.H.

Referenced by forces::devRhoReff().

word rhoName_

protected

Name of density field (optional)

Definition at line 135 of file forces.H.

Switch directForceDensity_

protected

Is the force density being supplied directly?

Definition at line 138 of file forces.H.

word fDName_

protected

The name of the force density (fD) field.

Definition at line 141 of file forces.H.

scalar rhoRef_

protected

Reference density needed for incompressible calculations.

Definition at line 144 of file forces.H.

scalar pRef_

protected

Reference pressure.

Definition at line 147 of file forces.H.

vector CofR_

protected

Centre of rotation.

Definition at line 150 of file forces.H.

autoPtr<OFstream> forcesFilePtr_

protected

Forces/moment file ptr.

Definition at line 154 of file forces.H.

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

src/postProcessing/functionObjects/forces/forces/forces.H
src/postProcessing/functionObjects/forces/forces/forces.C

Detailed Description

Classes

Public Types

Public Member Functions

Protected Member Functions

Protected Attributes

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation