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========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Copyright (C) 2026 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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You should have received a copy of the GNU General Public License
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Class
Foam::functionObjects::sectionalForcesBase
Description
Base class for sectional forces function objects
SourceFiles
sectionalForcesBase.C
\*---------------------------------------------------------------------------*/
#ifndef sectionalForcesBase_functionObject_H
#define sectionalForcesBase_functionObject_H
#include "fvMeshFunctionObject.H"
#include "indirectPrimitivePatch.H"
#include "patchCutPlot.H"
#include "volFieldsFwd.H"
#include "surfaceFieldsFwd.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace functionObjects
{
/*---------------------------------------------------------------------------*\
Class sectionalForcesBase Declaration
\*---------------------------------------------------------------------------*/
class sectionalForcesBase
:
public fvMeshFunctionObject
{
// Private Data
//- Mesh patches to integrate the forces over
labelHashSet patchSet_;
//- Primitive patch containing all mesh patches
mutable autoPtr<indirectPrimitivePatch> patchPtr_;
//- Name of pressure field
word pName_;
//- Name of velocity field
word UName_;
//- Name of density field (optional)
word rhoName_;
//- The name of the phase (optional)
word phaseName_;
//- Reference density needed for incompressible calculations
scalar rhoRef_;
//- Reference pressure
scalar pRef_;
//- Weights
mutable autoPtr<List<patchCutPlot::weight>> weightsPtr_;
// Private Member Functions
//- Multiply the argument by the volume fraction (if any)
template<class Type>
tmp<SurfaceField<Type>> timesAlpha
(
const tmp<SurfaceField<Type>> psi
) const;
//- Multiply the argument by the volume fraction (if any)
template<class Type>
tmp<Field<Type>> timesAlpha
(
const tmp<Field<Type>> psi,
const label patchi
) const;
//- Multiply the argument by the density
template<class Type>
tmp<SurfaceField<Type>> timesRho
(
const tmp<SurfaceField<Type>> psi
) const;
//- Multiply the argument by the volume fraction (if any) and density
template<class Type>
tmp<SurfaceField<Type>> timesAlphaRho
(
const tmp<SurfaceField<Type>> psi
) const;
//- Return the (dynamic) pressure
tmp<volScalarField> p() const;
//- Return the surface stress tensor
tmp<surfaceVectorField> devTau() const;
protected:
// Protected Member Functions
//- Clear the cached weights
virtual void clear();
//- Access the primitive patch
const indirectPrimitivePatch& patch() const;
//- Clear the patch
void clearPatch();
//- Clear the patch geometry
void clearPatchGeom();
//- Return the normal to the section planes
virtual vector normal() const = 0;
//- Return the origin of the plot. This can be an arbitrary point
// somewhere along the 1-D 'beam' that the geometry is reduced to.
virtual point origin() const = 0;
//- Return the distances from the origin to the section planes. This is
// the coordinate that we plot against.
virtual tmp<scalarField> distances() const = 0;
//- Return the distance from the origin to the patch points
// in the normal direction
tmp<scalarField> patchPointDistances() const;
//- Access the weights
const List<patchCutPlot::weight>& weights() const;
//- Return the output path
fileName outputPath() const;
//- Calculate the forces and moments at the cuts
void addFluid
(
vectorField& force,
vectorField& moment
) const;
public:
//- Runtime type information
TypeName("sectionalForcesBase");
// Constructors
//- Construct from Time and dictionary
sectionalForcesBase
(
const word& name,
const Time& runTime,
const dictionary& dict
);
//- Disallow default bitwise copy construction
sectionalForcesBase(const sectionalForcesBase&) = delete;
//- Destructor
virtual ~sectionalForcesBase();
// Member Functions
//- Read the sectionalForcesBase data
virtual bool read(const dictionary&);
//- Return the list of fields required
virtual wordList fields() const;
//- Execute, currently does nothing
virtual bool execute();
//- Execute at the final time-loop, currently does nothing
virtual bool end();
//- Update for mesh point-motion
virtual void movePoints(const polyMesh&);
//- Update topology using the given map
virtual void topoChange(const polyTopoChangeMap&);
//- Update from another mesh using the given map
virtual void mapMesh(const polyMeshMap&);
//- Redistribute or update using the given distribution map
virtual void distribute(const polyDistributionMap&);
// Member Operators
//- Disallow default bitwise assignment
void operator=(const sectionalForcesBase&) = delete;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace functionObjects
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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