Linear ramp function starting from 0 and increasing linearRamply to 1 from start over the duration and remaining at 1 thereafter. More...

Inheritance diagram for linearRamp:

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Collaboration diagram for linearRamp:

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Public Member Functions
	TypeName ("linearRamp")

	linearRamp (const word &name, const dictionary &dict)
	Construct from name and dictionary. More...

virtual	~linearRamp ()
	Destructor. More...

virtual scalar	value (const scalar t) const
	Return value for time t. More...

virtual scalar	integral (const scalar t1, const scalar t2) const
	Return the integral between times t1 and t2. More...

void	operator= (const linearRamp &)=delete
	Disallow default bitwise assignment. More...

Public Member Functions inherited from Ramp< linearRamp >
	Ramp (const word &name, const dictionary &dict)
	Construct from name and dictionary. More...

virtual	~Ramp ()
	Destructor. More...

virtual void	write (Ostream &os) const
	Write data to dictionary stream. More...

void	operator= (const Ramp< linearRamp > &)=delete
	Disallow default bitwise assignment. More...

Public Member Functions inherited from FieldFunction1< scalar, linearRamp >
	FieldFunction1 (const word &name)
	Construct from name. More...

virtual tmp< Function1< scalar > >	clone () const
	Construct and return a clone. More...

virtual	~FieldFunction1 ()
	Destructor. More...

virtual tmp< Field< scalar > >	value (const scalarField &x) const
	Return value as a function of one scalar field. More...

virtual tmp< Field< scalar > >	integral (const scalarField &x1, const scalarField &x2) const
	Integrate between two scalar fields. More...

Public Member Functions inherited from Function1< scalar >
	TypeName ("Function1")
	Runtime type information. More...

	declareRunTimeSelectionTable (autoPtr, Function1, dictionary,(const word &name, const dictionary &dict),(name, dict))
	Declare runtime constructor selection table. More...

	Function1 (const word &name)
	Construct from name. More...

	Function1 (const Function1< scalar > &f1)
	Copy constructor. More...

virtual	~Function1 ()
	Destructor. More...

const word &	name () const
	Return the name of the entry. More...

void	operator= (const Function1< scalar > &)
	Assignment. More...

Public Member Functions inherited from refCount
int	count () const
	Return the current reference count. More...

bool	unique () const
	Return true if the reference count is zero. More...

void	operator++ ()
	Increment the reference count. More...

void	operator++ (int)
	Increment the reference count. More...

void	operator-- ()
	Decrement the reference count. More...

void	operator-- (int)
	Decrement the reference count. More...

Additional Inherited Members
Public Types inherited from Function1< scalar >
typedef scalar	returnType

Static Public Member Functions inherited from Function1< scalar >
static autoPtr< Function1< scalar > >	New (const word &name, const dictionary &dict)
	Selector. More...

Protected Member Functions inherited from Ramp< linearRamp >
scalar	end () const
	Return the end-time of the ramp function. More...

scalar	linearRamp (const scalar t) const
	Simple linear ramp function which form the basis of many more. More...

scalar	dLinearRampDt () const
	The gradient of the linear ramp within the bounds of the ramp. More...

Protected Member Functions inherited from refCount
	refCount ()
	Construct null initialising count to 0. More...

Protected Attributes inherited from Ramp< linearRamp >
scalar	start_
	Start-time of the ramp function. More...

scalar	duration_
	Duration of the ramp function. More...

Protected Attributes inherited from Function1< scalar >
const word	name_
	Name of entry. More...

Detailed Description

Linear ramp function starting from 0 and increasing linearRamply to 1 from start over the duration and remaining at 1 thereafter.

Usage

    <name> linearRamp;
    <name>Coeffs
    {
        start     10;
        duration  20;
    }

or

    <name>
    {
        type      linearRamp;
        start     10;
        duration  20;
    }

or including a constant scaling factor:

    <name>
    {
        type      scale;

        scale
        {
            type        linearRamp;

            start       0;
            duration    10;
        }

        value       100;
    }

for more details of scaling the ramp see Foam::Function1s::Scale.

Where: