rigidBodyMeshMotion.H

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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
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Class
    Foam::rigidBodyMeshMotion
 
Description
    Rigid-body mesh motion solver for fvMesh.
 
    Applies septernion interpolation of movement as function of distance to the
    object surface.
 
SourceFiles
    rigidBodyMeshMotion.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef rigidBodyMeshMotion_H
#define rigidBodyMeshMotion_H
 
#include "displacementMotionSolver.H"
#include "rigidBodyMotion.H"
#include "Function1.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                     Class rigidBodyMeshMotion Declaration
\*---------------------------------------------------------------------------*/
 
class rigidBodyMeshMotion
:
    public displacementMotionSolver,
    public RBD::rigidBodyMotion
{
    //- Class containing the patches and point motion weighting for each body
    class bodyMesh
    {
        //- Name of the body
        const word name_;
 
        //- ID of the body in the RBD::rigidBodyMotion
        const label bodyID_;
 
        //- List of mesh patches associated with this body
        const wordReList patches_;
 
        //- Patches to integrate forces
        const labelHashSet patchSet_;
 
        //- Inner morphing distance (limit of solid-body region)
        const scalar di_;
 
        //- Outer morphing distance (limit of linear interpolation region)
        const scalar do_;
 
        //- Current interpolation weight
        //  (1 at patches and within di_, 0 at do_ and beyond)
        pointScalarField weight_;
 
 
    public:
 
        friend class rigidBodyMeshMotion;
 
        bodyMesh
        (
            const polyMesh& mesh,
            const word& name,
            const label bodyID,
            const dictionary& dict
        );
 
        template<class Type>
        inline Type weight(const Type& pDist) const;
    };
 
 
    // Private Data
 
        //- List of the bodyMeshes containing the patches and point motion
        //  weighting for each body
        PtrList<bodyMesh> bodyMeshes_;
 
        //- Switch for test-mode in which only the
        //  gravitational body-force is applied
        Switch test_;
 
        //- Reference density required by the forces object for
        //  incompressible calculations, required if rho == rhoInf
        scalar rhoInf_;
 
        //- Name of density field, optional unless used for an
        //  incompressible simulation, when this needs to be specified
        //  as rhoInf
        word rhoName_;
 
        //- Ramp the forces according to the specified function and period
        autoPtr<Function1<scalar>> ramp_;
 
        //- Current time index (used for updating)
        label curTimeIndex_;
 
 
    // Private Member Functions
 
        //- To avoid warning from clang
        using RBD::rigidBodyMotion::write;
 
        //- Return the list of transformation for each body from time 0
        List<septernion> transforms0() const;
 
        //- Return the list of weights for each body to pointi
        //   w is used as the work-space for the weights and returned
        List<scalar>& weights(const label pointi, List<scalar>& w) const;
 
 
public:
 
    //- Runtime type information
    TypeName("rigidBodyMotion");
 
 
    // Constructors
 
        //- Construct from polyMesh and dictionary
        rigidBodyMeshMotion
        (
            const word& name,
            const polyMesh&,
            const dictionary& dict
        );
 
        //- Disallow default bitwise copy construction
        rigidBodyMeshMotion
        (
            const rigidBodyMeshMotion&
        ) = delete;
 
 
    //- Destructor
    ~rigidBodyMeshMotion();
 
 
    // Member Functions
 
        //- Return point location obtained from the current motion field
        virtual tmp<pointField> curPoints() const;
 
        //- Solve for motion
        virtual void solve();
 
        //-  Update local data for topology changes
        virtual void topoChange(const polyTopoChangeMap&);
 
        //- Write motion state information for restart
        virtual bool write() const;
 
 
    // Member Operators
 
        //- Disallow default bitwise assignment
        void operator=(const rigidBodyMeshMotion&) = delete;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //