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Function1::ramp: New set of scalar ramp functions

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Description
    Ramp function base class for the set of scalar functions starting from 0 and
    increasing monotonically to 1 from \c start over the \c duration and
    remaining at 1 thereafter.

    Usage:
    \verbatim
        <entryName> <rampFunction>;
        <entryName>Coeffs
        {
            start     10;
            duration  20;
        }
    \endverbatim
    or
    \verbatim
        <entryName>
        {
            type      <rampFunction>;
            start     10;
            duration  20;
        }
    \endverbatim

    Where:
    \table
        Property | Description  | Required | Default value
        start    | Start time   | no       | 0
        duration | Duration     | yes      |
    \endtable

The following common ramp functions are provided: linear, quadratic, halfCosine,
quarterCosine and quaterSine, others can easily be added and registered to the run-time
selection system.
This commit is contained in:
Henry Weller
2017-03-16 20:56:57 +00:00
parent 32052dce23
commit 1e592a128a
13 changed files with 1059 additions and 1 deletions
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8
src/OpenFOAM/Make/files
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@ -76,8 +76,14 @@ primitives/quaternion/quaternion.C
primitives/septernion/septernion.C
primitives/triad/triad.C
/* functions, data entries */
/* Run-time selectable functions */
primitives/functions/Function1/makeDataEntries.C
primitives/functions/Function1/ramp/ramp.C
primitives/functions/Function1/linear/linear.C
primitives/functions/Function1/quadratic/quadratic.C
primitives/functions/Function1/quarterSine/quarterSine.C
primitives/functions/Function1/quarterCosine/quarterCosine.C
primitives/functions/Function1/halfCosine/halfCosine.C
primitives/functions/Polynomial/polynomialFunction.C
primitives/subModelBase/subModelBase.C

66
src/OpenFOAM/primitives/functions/Function1/halfCosine/halfCosine.C Normal file
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@ -0,0 +1,66 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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/>.
\*---------------------------------------------------------------------------*/
#include "halfCosine.H"
#include "mathematicalConstants.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
makeScalarFunction1(halfCosine);
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::Function1Types::halfCosine::halfCosine
(
const word& entryName,
const dictionary& dict
)
:
ramp(entryName, dict)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::Function1Types::halfCosine::~halfCosine()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::scalar Foam::Function1Types::halfCosine::value(const scalar t) const
{
return 0.5*(1 - cos(constant::mathematical::pi*linearRamp(t)));
}
// ************************************************************************* //

101
src/OpenFOAM/primitives/functions/Function1/halfCosine/halfCosine.H Normal file
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@ -0,0 +1,101 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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::Function1Types::halfCosine
Description
Half-cosine ramp function starting from 0 and increasing to 1 from \c start
over the \c duration and remaining at 1 thereafter.
See also
Foam::Function1Types::ramp
SourceFiles
halfCosine.C
\*---------------------------------------------------------------------------*/
#ifndef halfCosine_H
#define halfCosine_H
#include "ramp.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
/*---------------------------------------------------------------------------*\
Class halfCosine Declaration
\*---------------------------------------------------------------------------*/
class halfCosine
:
public ramp
{
// Private Member Functions
//- Disallow default bitwise assignment
void operator=(const halfCosine&);
public:
// Runtime type information
TypeName("halfCosine");
// Constructors
//- Construct from entry name and dictionary
halfCosine
(
const word& entryName,
const dictionary& dict
);
//- Destructor
virtual ~halfCosine();
// Member Functions
//- Return value for time t
scalar value(const scalar t) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Function1Types
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

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src/OpenFOAM/primitives/functions/Function1/linear/linear.C Normal file
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@ -0,0 +1,65 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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/>.
\*---------------------------------------------------------------------------*/
#include "linear.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
makeScalarFunction1(linear);
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::Function1Types::linear::linear
(
const word& entryName,
const dictionary& dict
)
:
ramp(entryName, dict)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::Function1Types::linear::~linear()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::scalar Foam::Function1Types::linear::value(const scalar t) const
{
return linearRamp(t);
}
// ************************************************************************* //

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src/OpenFOAM/primitives/functions/Function1/linear/linear.H Normal file
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@ -0,0 +1,101 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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::Function1Types::linear
Description
Linear ramp function starting from 0 and increasing linearly to 1 from \c
start over the \c duration and remaining at 1 thereafter.
See also
Foam::Function1Types::ramp
SourceFiles
linear.C
\*---------------------------------------------------------------------------*/
#ifndef linear_H
#define linear_H
#include "ramp.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
/*---------------------------------------------------------------------------*\
Class linear Declaration
\*---------------------------------------------------------------------------*/
class linear
:
public ramp
{
// Private Member Functions
//- Disallow default bitwise assignment
void operator=(const linear&);
public:
// Runtime type information
TypeName("linear");
// Constructors
//- Construct from entry name and dictionary
linear
(
const word& entryName,
const dictionary& dict
);
//- Destructor
virtual ~linear();
// Member Functions
//- Return value for time t
scalar value(const scalar t) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Function1Types
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

65
src/OpenFOAM/primitives/functions/Function1/quadratic/quadratic.C Normal file
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@ -0,0 +1,65 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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/>.
\*---------------------------------------------------------------------------*/
#include "quadratic.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
makeScalarFunction1(quadratic);
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::Function1Types::quadratic::quadratic
(
const word& entryName,
const dictionary& dict
)
:
ramp(entryName, dict)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::Function1Types::quadratic::~quadratic()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::scalar Foam::Function1Types::quadratic::value(const scalar t) const
{
return sqr(linearRamp(t));
}
// ************************************************************************* //

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src/OpenFOAM/primitives/functions/Function1/quadratic/quadratic.H Normal file
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@ -0,0 +1,101 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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::Function1Types::quadratic
Description
Quadratic ramp function starting from 0 and increasing quadratically to 1
from \c t_0 over the \c duration and remaining at 1 thereafter.
See also
Foam::Function1Types::ramp
SourceFiles
quadratic.C
\*---------------------------------------------------------------------------*/
#ifndef quadratic_H
#define quadratic_H
#include "ramp.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
/*---------------------------------------------------------------------------*\
Class quadratic Declaration
\*---------------------------------------------------------------------------*/
class quadratic
:
public ramp
{
// Private Member Functions
//- Disallow default bitwise assignment
void operator=(const quadratic&);
public:
// Runtime type information
TypeName("quadratic");
// Constructors
//- Construct from entry name and dictionary
quadratic
(
const word& entryName,
const dictionary& dict
);
//- Destructor
virtual ~quadratic();
// Member Functions
//- Return value for time t
scalar value(const scalar t) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Function1Types
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

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src/OpenFOAM/primitives/functions/Function1/quarterCosine/quarterCosine.C Normal file
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@ -0,0 +1,66 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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/>.
\*---------------------------------------------------------------------------*/
#include "quarterCosine.H"
#include "mathematicalConstants.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
makeScalarFunction1(quarterCosine);
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::Function1Types::quarterCosine::quarterCosine
(
const word& entryName,
const dictionary& dict
)
:
ramp(entryName, dict)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::Function1Types::quarterCosine::~quarterCosine()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::scalar Foam::Function1Types::quarterCosine::value(const scalar t) const
{
return 1 - cos(0.5*constant::mathematical::pi*linearRamp(t));
}
// ************************************************************************* //

101
src/OpenFOAM/primitives/functions/Function1/quarterCosine/quarterCosine.H Normal file
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@ -0,0 +1,101 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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::Function1Types::quarterCosine
Description
Quarter-cosine ramp function starting from 0 and increasing to 1 from \c
start over the \c duration and remaining at 1 thereafter.
See also
Foam::Function1Types::ramp
SourceFiles
quarterCosine.C
\*---------------------------------------------------------------------------*/
#ifndef quarterCosine_H
#define quarterCosine_H
#include "ramp.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
/*---------------------------------------------------------------------------*\
Class quarterCosine Declaration
\*---------------------------------------------------------------------------*/
class quarterCosine
:
public ramp
{
// Private Member Functions
//- Disallow default bitwise assignment
void operator=(const quarterCosine&);
public:
// Runtime type information
TypeName("quarterCosine");
// Constructors
//- Construct from entry name and dictionary
quarterCosine
(
const word& entryName,
const dictionary& dict
);
//- Destructor
virtual ~quarterCosine();
// Member Functions
//- Return value for time t
scalar value(const scalar t) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Function1Types
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

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src/OpenFOAM/primitives/functions/Function1/quarterSine/quarterSine.C Normal file
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@ -0,0 +1,66 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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/>.
\*---------------------------------------------------------------------------*/
#include "quarterSine.H"
#include "mathematicalConstants.H"
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
makeScalarFunction1(quarterSine);
}
}
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
Foam::Function1Types::quarterSine::quarterSine
(
const word& entryName,
const dictionary& dict
)
:
ramp(entryName, dict)
{}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::Function1Types::quarterSine::~quarterSine()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
Foam::scalar Foam::Function1Types::quarterSine::value(const scalar t) const
{
return sin(0.5*constant::mathematical::pi*linearRamp(t));
}
// ************************************************************************* //

101
src/OpenFOAM/primitives/functions/Function1/quarterSine/quarterSine.H Normal file
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@ -0,0 +1,101 @@
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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::Function1Types::quarterSine
Description
Quarter-sine ramp function starting from 0 and increasing to 1 from \c start
over the \c duration and remaining at 1 thereafter.
See also
Foam::Function1Types::ramp
SourceFiles
quarterSine.C
\*---------------------------------------------------------------------------*/
#ifndef quarterSine_H
#define quarterSine_H
#include "ramp.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
/*---------------------------------------------------------------------------*\
Class quarterSine Declaration
\*---------------------------------------------------------------------------*/
class quarterSine
:
public ramp
{
// Private Member Functions
//- Disallow default bitwise assignment
void operator=(const quarterSine&);
public:
// Runtime type information
TypeName("quarterSine");
// Constructors
//- Construct from entry name and dictionary
quarterSine
(
const word& entryName,
const dictionary& dict
);
//- Destructor
virtual ~quarterSine();
// Member Functions
//- Return value for time t
scalar value(const scalar t) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Function1Types
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //

69
src/OpenFOAM/primitives/functions/Function1/ramp/ramp.C Normal file
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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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/>.
\*---------------------------------------------------------------------------*/
#include "ramp.H"
// * * * * * * * * * * * * * * * * Constructors * * * * * * * * * * * * * * //
void Foam::Function1Types::ramp::read(const dictionary& coeffs)
{
start_ = coeffs.lookupOrDefault<scalar>("start", 0);
duration_ = coeffs.lookupType<scalar>("duration");
}
Foam::Function1Types::ramp::ramp
(
const word& entryName,
const dictionary& dict
)
:
Function1<scalar>(entryName)
{
read(dict);
}
// * * * * * * * * * * * * * * * * Destructor * * * * * * * * * * * * * * * //
Foam::Function1Types::ramp::~ramp()
{}
// * * * * * * * * * * * * * * * Member Functions * * * * * * * * * * * * * //
void Foam::Function1Types::ramp::writeData(Ostream& os) const
{
Function1<scalar>::writeData(os);
os << token::END_STATEMENT << nl;
os << indent << word(this->name() + "Coeffs") << nl;
os << indent << token::BEGIN_BLOCK << incrIndent << nl;
os.writeKeyword("start") << start_ << token::END_STATEMENT << nl;
os.writeKeyword("duration") << duration_ << token::END_STATEMENT << nl;
os << decrIndent << indent << token::END_BLOCK << endl;
}
// ************************************************************************* //

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src/OpenFOAM/primitives/functions/Function1/ramp/ramp.H Normal file
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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2017 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
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::Function1Types::ramp
Description
Ramp function base class for the set of scalar functions starting from 0 and
increasing monotonically to 1 from \c start over the \c duration and
remaining at 1 thereafter.
Usage:
\verbatim
<entryName> <rampFunction>;
<entryName>Coeffs
{
start 10;
duration 20;
}
\endverbatim
or
\verbatim
<entryName>
{
type <rampFunction>;
start 10;
duration 20;
}
\endverbatim
Where:
\table
Property | Description | Required | Default value
start | Start time | no | 0
duration | Duration | yes |
\endtable
See also
Foam::Function1
SourceFiles
ramp.C
\*---------------------------------------------------------------------------*/
#ifndef ramp_H
#define ramp_H
#include "Function1.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace Function1Types
{
/*---------------------------------------------------------------------------*\
Class ramp Declaration
\*---------------------------------------------------------------------------*/
class ramp
:
public Function1<scalar>
{
protected:
// Protected data
//- Start-time of the ramp function
scalar start_;
//- Duration of the ramp function
scalar duration_;
//- Simple linear ramp function
// which form the basis of many more complex ramp functions
inline scalar linearRamp(const scalar t) const
{
return max(min((t - start_)/duration_, 1), 0);
}
private:
// Private Member Functions
//- Read the coefficients from the given dictionary
void read(const dictionary& coeffs);
//- Disallow default bitwise assignment
void operator=(const ramp&);
public:
// Constructors
//- Construct from entry name and dictionary
ramp
(
const word& entryName,
const dictionary& dict
);
//- Destructor
virtual ~ramp();
// Member Functions
//- Return value for time t
scalar value(const scalar t) const = 0;
//- Write in dictionary format
virtual void writeData(Ostream& os) const;
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace Function1Types
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //