gh::ConstraintDamping::GaussianPlusConstant< VolumeDim, Fr > Class Template Reference

A Gaussian plus a constant: \(f = C + A \exp\left(-\frac{(x-x_0)^2}{w^2}\right)\). More...

#include <GaussianPlusConstant.hpp>

Classes
struct	Amplitude
struct	Center
struct	Constant
struct	Width

Public Types
using	options = tmpl::list< Constant, Amplitude, Width, Center >
Public Types inherited from gh::ConstraintDamping::DampingFunction< VolumeDim, Fr >
using	creatable_classes = tmpl::conditional_t<(VolumeDim==3 and std::is_same< Fr, Frame::Grid >::value), tmpl::list< gh::ConstraintDamping::Constant< VolumeDim, Fr >, gh::ConstraintDamping::GaussianPlusConstant< VolumeDim, Fr >, gh::ConstraintDamping::TimeDependentTripleGaussian >, tmpl::list< gh::ConstraintDamping::GaussianPlusConstant< VolumeDim, Fr >, gh::ConstraintDamping::Constant< VolumeDim, Fr > > >
using	frame = Fr

Public Member Functions
	GaussianPlusConstant (double constant, double amplitude, double width, const std::array< double, VolumeDim > &center)
	GaussianPlusConstant (const GaussianPlusConstant &)=default
GaussianPlusConstant &	operator= (const GaussianPlusConstant &)=default
	GaussianPlusConstant (GaussianPlusConstant &&)=default
GaussianPlusConstant &	operator= (GaussianPlusConstant &&)=default
void	operator() (const gsl::not_null< Scalar< double > * > value_at_x, const tnsr::I< double, VolumeDim, Fr > &x, double time, const std::unordered_map< std::string, std::unique_ptr< domain::FunctionsOfTime::FunctionOfTime > > &functions_of_time) const override
	Returns the value of the function at the coordinate 'x'. More...
void	operator() (const gsl::not_null< Scalar< DataVector > * > value_at_x, const tnsr::I< DataVector, VolumeDim, Fr > &x, double time, const std::unordered_map< std::string, std::unique_ptr< domain::FunctionsOfTime::FunctionOfTime > > &functions_of_time) const override
	Returns the value of the function at the coordinate 'x'. More...
auto	get_clone () const -> std::unique_ptr< DampingFunction< VolumeDim, Fr > > override
void	pup (PUP::er &p) override
Public Member Functions inherited from gh::ConstraintDamping::DampingFunction< VolumeDim, Fr >
	WRAPPED_PUPable_abstract (DampingFunction)
	DampingFunction (const DampingFunction &)=default
DampingFunction &	operator= (const DampingFunction &)=default
	DampingFunction (DampingFunction &&)=default
DampingFunction &	operator= (DampingFunction &&)=default
	DampingFunction (CkMigrateMessage *msg)
virtual auto	get_clone () const -> std::unique_ptr< DampingFunction< VolumeDim, Fr > >=0

Static Public Attributes
static constexpr Options::String	help
Static Public Attributes inherited from gh::ConstraintDamping::DampingFunction< VolumeDim, Fr >
static constexpr size_t	volume_dim = VolumeDim

Friends
bool	operator== (const GaussianPlusConstant &lhs, const GaussianPlusConstant &rhs)

Detailed Description

template<size_t VolumeDim, typename Fr>
class gh::ConstraintDamping::GaussianPlusConstant< VolumeDim, Fr >

A Gaussian plus a constant: \(f = C + A \exp\left(-\frac{(x-x_0)^2}{w^2}\right)\).

Details

Input file options are: Constant \(C\), Amplitude \(A\), Width \(w\), and Center \(x_0\). The function takes input coordinates of type tnsr::I<T, VolumeDim, Fr>, where T is e.g. double or DataVector, Fr is a frame (e.g. Frame::Inertial), and VolumeDim is the dimension of the spatial volume.

Member Function Documentation

get_clone()

template<size_t VolumeDim, typename Fr >

auto gh::ConstraintDamping::GaussianPlusConstant< VolumeDim, Fr >::get_clone ( ) const -> std::unique_ptr< DampingFunction< VolumeDim, Fr > >

overridevirtual

Implements gh::ConstraintDamping::DampingFunction< VolumeDim, Fr >.

operator()() [1/2]

template<size_t VolumeDim, typename Fr >

void gh::ConstraintDamping::GaussianPlusConstant< VolumeDim, Fr >::operator() ( const gsl::not_null< Scalar< DataVector > * >  value_at_x, const tnsr::I< DataVector, VolumeDim, Fr > &  x, double  time, const std::unordered_map< std::string, std::unique_ptr< domain::FunctionsOfTime::FunctionOfTime > > &  functions_of_time  ) const

overridevirtual

Returns the value of the function at the coordinate 'x'.

Implements gh::ConstraintDamping::DampingFunction< VolumeDim, Fr >.

operator()() [2/2]

template<size_t VolumeDim, typename Fr >

void gh::ConstraintDamping::GaussianPlusConstant< VolumeDim, Fr >::operator() ( const gsl::not_null< Scalar< double > * >  value_at_x, const tnsr::I< double, VolumeDim, Fr > &  x, double  time, const std::unordered_map< std::string, std::unique_ptr< domain::FunctionsOfTime::FunctionOfTime > > &  functions_of_time  ) const

overridevirtual

Returns the value of the function at the coordinate 'x'.

Implements gh::ConstraintDamping::DampingFunction< VolumeDim, Fr >.

Member Data Documentation

help

template<size_t VolumeDim, typename Fr >

constexpr Options::String gh::ConstraintDamping::GaussianPlusConstant< VolumeDim, Fr >::help

staticconstexpr

Initial value:

= {
      "Computes a Gaussian plus a constant about an arbitrary coordinate "
      "center with given width and amplitude"}

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The documentation for this class was generated from the following file:

• src/Evolution/Systems/GeneralizedHarmonic/ConstraintDamping/GaussianPlusConstant.hpp