FieldEnergy Class Reference

#include <FieldEnergy.H>

Inheritance diagram for FieldEnergy:

Public Member Functions
	FieldEnergy (const std::string &rd_name)
void	ComputeDiags (int step) final
amrex::Real	ComputeNorm2 (const amrex::MultiFab &field, int lev)
	Calculate the integral of the field squared, taking into account the fraction of the cell volume within the domain.
Public Member Functions inherited from ReducedDiags
	ReducedDiags (const std::string &rd_name)
virtual	~ReducedDiags ()=default
	ReducedDiags (const ReducedDiags &)=default
ReducedDiags &	operator= (const ReducedDiags &)=default
	ReducedDiags (ReducedDiags &&)=default
ReducedDiags &	operator= (ReducedDiags &&)=default
virtual void	InitData ()
virtual void	LoadBalance ()
virtual void	ComputeDiagsMidStep (int step)
virtual void	WriteToFile (int step) const
bool	DoDiags (int step) const
virtual void	WriteCheckpointData (std::string const &dir)
	Write out checkpoint related data.
virtual void	ReadCheckpointData (std::string const &dir)
	Read in checkpoint related data.
void	BackwardCompatibility () const

Additional Inherited Members
Public Attributes inherited from ReducedDiags
std::string	m_path = "./diags/reducedfiles/"
	output path (default)
std::string	m_extension = "txt"
	output extension (default)
std::string	m_rd_name
	diags name
ablastr::utils::text::IntervalsParser	m_intervals
	output intervals
bool	m_write_header = false
	check if header should be written
std::string	m_sep = " "
	separator in the output file
int	m_precision = 14
	precision for data in the output file
std::vector< amrex::Real >	m_data
	output data

Detailed Description

This class mainly contains a function that computes the field energy.

Constructor & Destructor Documentation

FieldEnergy()

FieldEnergy::FieldEnergy ( const std::string & rd_name )

explicit

constructor

Parameters

[in]

rd_name

reduced diags names

Member Function Documentation

ComputeDiags()

void FieldEnergy::ComputeDiags ( int step )

finalvirtual

This function computes the field energy (EF): EF = sum( 1/2 * (|E|^2 * eps0 + |B|^2 / mu0) * dV ), where E is the electric field, B is the magnetic field, eps0 is the vacuum permittivity, mu0 is the vacuum permeability, dV is the cell volume (area, in 2D) and the sum is over all cells.

Parameters

[in]

step

current time step

Implements ReducedDiags.

ComputeNorm2()

amrex::Real FieldEnergy::ComputeNorm2	(	const amrex::MultiFab &	field,
		int	lev )

Calculate the integral of the field squared, taking into account the fraction of the cell volume within the domain.

Parameters

field	The MultiFab to be integrated
lev	The refinement level

Returns

The integral

---

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

• /home/docs/checkouts/readthedocs.org/user_builds/warpx/checkouts/26.07/Source/Diagnostics/ReducedDiags/FieldEnergy.H
• /home/docs/checkouts/readthedocs.org/user_builds/warpx/checkouts/26.07/Source/Diagnostics/ReducedDiags/FieldEnergy.cpp