linearRamp.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
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    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::linearRamp
 
Description
    Linear ramp function starting from 0 and increasing linearRamply to 1 from
    \c start over the \c duration and remaining at 1 thereafter.
 
Usage
    \verbatim
        <name> linearRamp;
        <name>Coeffs
        {
            start     10;
            duration  20;
        }
    \endverbatim
    or
    \verbatim
        <name>
        {
            type      linearRamp;
            start     10;
            duration  20;
        }
    \endverbatim
    or including a constant scaling factor:
    \verbatim
        <name>
        {
            type      scale;
 
            scale
            {
                type        linearRamp;
 
                start       0;
                duration    10;
            }
 
            value       100;
        }
    \endverbatim
    for more details of scaling the ramp see Foam::Function1s::Scale.
 
    Where:
    \table
        Property | Description  | Required | Default value
        start    | Start time   | no       | 0
        duration | Duration     | yes      |
    \endtable
 
See also
    Foam::Function1s::Ramp
    Foam::Function1s::Scale
 
SourceFiles
    linearRamp.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef linearRamp_H
#define linearRamp_H
 
#include "Ramp.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace Function1s
{
 
/*---------------------------------------------------------------------------*\
                         Class linearRamp Declaration
\*---------------------------------------------------------------------------*/
 
class linearRamp
:
    public Ramp<linearRamp>
{
 
public:
 
    // Runtime type information
    TypeName("linearRamp");
 
 
    // Constructors
 
        //- Construct from name and dictionary
        linearRamp
        (
            const word& name,
            const dictionary& dict
        );
 
 
    //- Destructor
    virtual ~linearRamp();
 
 
    // Member Functions
 
        //- Return value for time t
        virtual inline scalar value(const scalar t) const;
 
        //- Return the integral between times t1 and t2
        virtual inline scalar integral
        (
            const scalar t1,
            const scalar t2
        ) const;
 
 
    // Member Operators
 
        //- Disallow default bitwise assignment
        void operator=(const linearRamp&) = delete;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Function1s
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "linearRampI.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //