sapphirepp::VFP::InitialValueFunction< dim > Class Template Reference

Initial condition. More...

#include <config.h>

Inheritance diagram for sapphirepp::VFP::InitialValueFunction< dim >:

Collaboration diagram for sapphirepp::VFP::InitialValueFunction< dim >:

Public Member Functions
	InitialValueFunction (const PhysicalParameters &physical_parameters, const unsigned int system_size)
	Constructor.
void	vector_value (const dealii::Point< dim > &point, dealii::Vector< double > &f) const override
	Evaluate the initial condition at point p.

Detailed Description

template<unsigned int dim>
class sapphirepp::VFP::InitialValueFunction< dim >

Initial condition.

[VFP Flags]

Template Parameters

dim	Dimension of the reduced phase space \( (\mathbf{x}, p) \)

Constructor & Destructor Documentation

InitialValueFunction()

template<unsigned int dim>

sapphirepp::VFP::InitialValueFunction< dim >::InitialValueFunction ( const PhysicalParameters & physical_parameters, const unsigned int system_size )

inline

Constructor.

Parameters

physical_parameters	User defined runtime parameters
system_size	Number of expansion coefficients, normally \( (l_{\rm max} + 1)^2 \)

Member Function Documentation

vector_value()

template<unsigned int dim>

void sapphirepp::VFP::InitialValueFunction< dim >::vector_value ( const dealii::Point< dim > & point, dealii::Vector< double > & f ) const

inlineoverride

Evaluate the initial condition at point p.

Return a vector of values corresponding to the initial condition of the coefficients \( f_{i(l,m,s)}(t=0, \mathbf{x}, p) \) of the expansion of the distribution function in spherical harmonics.

The zeroth component of values corresponds to \( f_{000} \), the first component to \( f_{110} \) etc. The mapping between the system index \( i \) and the spherical harmonic indices \( (l,m,s) \) is given by lms_indices:

const unsigned int l = lms_indices[i][0];
const unsigned int m = lms_indices[i][1];
const unsigned int s = lms_indices[i][2];

The point in reduced phase space is given by p. The first dim_cs components correspond to the spatial coordinates \( \mathbf{x} \) and if momentum term is activated the last component to the momentum coordinate \( p \):

const double x     = point[0];
const double y     = point[1];
// ...
const double log_p = point[dim-1];

Parameters

point	Point in reduced phase space
f	Return vector \( f_{i(l,m,s)}(t=0, \mathbf{x}, p) \)

See also

Function::vector_value()

[Initial value]

[Initial value]

---

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

• include/config.h