axisRotationMotion.C

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/*---------------------------------------------------------------------------*\
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    Copyright (C) 2012-2016 OpenFOAM Foundation
-------------------------------------------------------------------------------
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.
 
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
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#include "axisRotationMotion.H"
#include "addToRunTimeSelectionTable.H"
#include "unitConversion.H"
 
using namespace Foam::constant::mathematical;
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace solidBodyMotionFunctions
{
    defineTypeNameAndDebug(axisRotationMotion, 0);
    addToRunTimeSelectionTable
    (
        solidBodyMotionFunction,
        axisRotationMotion,
        dictionary
    );
}
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::solidBodyMotionFunctions::axisRotationMotion::axisRotationMotion
(
    const dictionary& SBMFCoeffs,
    const Time& runTime
)
:
    solidBodyMotionFunction(SBMFCoeffs, runTime)
{
    read(SBMFCoeffs);
}
 
 
// * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * * //
 
Foam::septernion
Foam::solidBodyMotionFunctions::axisRotationMotion::transformation() const
{
    scalar t = time_.value();
 
    // Rotation origin (in radians)
    vector omega
    (
        t*degToRad(radialVelocity_.x()),
        t*degToRad(radialVelocity_.y()),
        t*degToRad(radialVelocity_.z())
    );
 
    scalar magOmega = mag(omega);
    quaternion R(omega/magOmega, magOmega);
    septernion TR(septernion(-origin_)*R*septernion(origin_));
 
    DebugInFunction << "Time = " << t << " transformation: " << TR << endl;
 
    return TR;
}
 
 
bool Foam::solidBodyMotionFunctions::axisRotationMotion::read
(
    const dictionary& SBMFCoeffs
)
{
    solidBodyMotionFunction::read(SBMFCoeffs);
 
    SBMFCoeffs_.readEntry("origin", origin_);
    SBMFCoeffs_.readEntry("radialVelocity", radialVelocity_);
 
    return true;
}
 
 
// ************************************************************************* //