omega1.H

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License
    This file is part of OpenFOAM.
 
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    the Free Software Foundation, either version 3 of the License, or
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    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::Function1s::omega
 
Description
    Convenience class to handle the input of time-varying rotational speed.
    Reads an \c omega Function1 entry with default units of [rad/s]. For
    backwards compatibility this will also alternatively read an \c rpm entry
    with default units of [rpm].
 
Usage
    For specifying a constant rotational speed of an MRF zone:
    \verbatim
        MRF
        {
            cellZone    rotor;
 
            origin     (0 0 0);
            axis       (0 0 1);
 
            omega      6.28319;  // <-- Basic specification in [rad/s]
 
        //  omega      60 [rpm]; // <-- Equivalent specification with unit
                                 //     conversion from [rpm]
 
        //  rpm        60;       // <-- Equivalent backwards compatible
                                 //     specification for rpm. May be
                                 //     removed in future.
        }
    \endverbatim
    or for a tabulated ramped rotational speed of a solid body:
    \verbatim
        mover
        {
            type            motionSolver;
 
            libs            ("libfvMotionSolvers.so");
 
            motionSolver    solidBody;
 
            cellZone        innerCylinder;
 
            solidBodyMotionFunction  rotatingMotion;
 
            origin      (0 0 0);
            axis        (0 1 0);
 
            omega       table            // <-- Basic specification in [rad/s]
            (
                (0      0)
                (0.01   628.319)
                (0.022  628.319)
                (0.03   418.879)
                (100    418.879)
            );
 
        //  omega                        // <-- Equivalent specification with
        //  {                            //     unit conversion from [rpm].
        //      type        table;       //     Note that the dictionary form
        //      units       ([s] [rpm]); //     is needed for the units entry.
        //      values
        //      (
        //          (0      0)
        //          (0.01   6000)
        //          (0.022  6000)
        //          (0.03   4000)
        //          (100    4000)
        //      );
        //  }
 
        //  rpm         table            // <-- Equivalent backwards compatible
        //  (                            //     specification for rpm. May be
        //      (0      0)               //     removed in future.
        //      (0.01   6000)
        //      (0.022  6000)
        //      (0.03   4000)
        //      (100    4000)
        //  );
        }
    \endverbatim
 
See also
    Foam::Function1s
 
SourceFiles
    omega1.C
    omega1I.H
 
\*---------------------------------------------------------------------------*/
 
#ifndef omega1_H
#define omega1_H
 
#include "Function1.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
class Time;
 
namespace Function1s
{
 
/*---------------------------------------------------------------------------*\
                         Class omega Declaration
\*---------------------------------------------------------------------------*/
 
class omega
{
    // Private Data
 
        //- Reference to the time units
        const unitConversion& tUnits_;
 
        //- The omega function
        const autoPtr<Function1<scalar>> omega_;
 
 
    // Private Member Functions
 
        //- Read and construct the omega function
        autoPtr<Function1<scalar>> init
        (
            const Time& time,
            const dictionary& dict
        );
 
 
public:
 
    // Constructors
 
        //- Construct from dictionary
        omega(const Time& time, const dictionary& dict);
 
        //- Copy constructor
        omega(const omega&);
 
        //- Construct and return a clone
        autoPtr<omega> clone() const
        {
            return autoPtr<omega>(new omega(*this));
        }
 
 
    // Member Functions
 
        //- Return value for time t
        inline scalar value(const scalar t) const;
 
        //- Return the integral between times t1 and t2
        inline scalar integral
        (
            const scalar t1,
            const scalar t2
        ) const;
 
        //- Write data to dictionary stream
        void write(Ostream& os) const;
 
 
    // Member Operators
 
        //- Disallow default bitwise assignment
        void operator=(const omega&) = delete;
};
 
 
void writeEntry(Ostream& os, const omega& a);
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Function1s
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "omega1I.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //