158 lines
3.9 KiB
C++
158 lines
3.9 KiB
C++
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2013 OpenFOAM Foundation
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
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Class
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Foam::Q
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Group
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grpUtilitiesFunctionObjects
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Description
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This function object calculates and outputs the second invariant of the
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velocity gradient tensor [1/s^2].
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\f[
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Q = 0.5(sqr(tr(\nabla U)) - tr(((\nabla U) \cdot (\nabla U))))
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\f]
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SourceFiles
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Q.C
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IOQ.H
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\*---------------------------------------------------------------------------*/
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#ifndef Q_H
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#define Q_H
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#include "volFieldsFwd.H"
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#include "surfaceFieldsFwd.H"
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#include "OFstream.H"
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#include "Switch.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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namespace Foam
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{
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// Forward declaration of classes
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class objectRegistry;
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class dictionary;
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class polyMesh;
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class mapPolyMesh;
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/*---------------------------------------------------------------------------*\
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Class Q Declaration
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\*---------------------------------------------------------------------------*/
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class Q
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{
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// Private data
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//- Name of this set of Q objects
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word name_;
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//- Reference to the database
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const objectRegistry& obr_;
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//- On/off switch
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bool active_;
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//- Name of velocity field, default is "U"
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word UName_;
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// Private Member Functions
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//- Disallow default bitwise copy construct
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Q(const Q&);
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//- Disallow default bitwise assignment
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void operator=(const Q&);
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public:
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//- Runtime type information
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TypeName("Q");
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// Constructors
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//- Construct for given objectRegistry and dictionary.
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// Allow the possibility to load fields from files
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Q
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(
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const word& name,
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const objectRegistry&,
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const dictionary&,
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const bool loadFromFiles = false
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);
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//- Destructor
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virtual ~Q();
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// Member Functions
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//- Return name of the set of Q
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virtual const word& name() const
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{
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return name_;
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}
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//- Read the Q data
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virtual void read(const dictionary&);
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//- Execute, currently does nothing
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virtual void execute();
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//- Execute at the final time-loop, currently does nothing
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virtual void end();
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//- Called when time was set at the end of the Time::operator++
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virtual void timeSet();
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//- Calculate the Q and write
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virtual void write();
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//- Update for changes of mesh
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virtual void updateMesh(const mapPolyMesh&)
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{}
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//- Update for changes of mesh
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virtual void movePoints(const polyMesh&)
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{}
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};
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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} // End namespace Foam
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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#endif
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// ************************************************************************* //
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