dg::geo::solovev::Parameters Struct Reference

Constructs and display geometric parameters for the solovev and taylor fields. More...

Public Member Functions
	Parameters ()=default
	Parameters (const dg::file::WrappedJsonValue &js)
	Construct from Json dataset.
dg::file::JsonType	dump () const
	Put values into a json string.
bool	hasXpoint () const
	True if any coefficient c_i!=0 with 7<=i<12.
bool	isToroidal () const
	True if pp==0.
void	display (std::ostream &os=std::cout) const
	Write variables as a formatted string.

Public Attributes
double	A
	A coefficient.
double	R_0
	major tokamak radius
double	pp
	prefactor for Psi_p
double	pi
	prefactor for current I
double	a
	little tokamak radius
double	elongation
	elongation of the magnetic surfaces
double	triangularity
	triangularity of the magnetic surfaces
std::vector< double >	c
	12 coefficients for the solovev equilibrium;
std::string	description

Detailed Description

Constructs and display geometric parameters for the solovev and taylor fields.

Constructor & Destructor Documentation

Parameters() [1/2]

dg::geo::solovev::Parameters::Parameters ( )

default

Parameters() [2/2]

dg::geo::solovev::Parameters::Parameters ( const dg::file::WrappedJsonValue & js )

inline

Construct from Json dataset.

// Solovev (and Taylor) geometry parameters
{
    "equilibrium": "solovev",
    // Note that for the taylor field you need to include boost before the geometries header!
    // "equilibrium" : "taylor",
    "A": 0,
    "R_0": 213.36,
    "PP": 1,
    "PI": 1,
    "c":[
        0.072597888572520090,
        -0.14926096478076946,
        // ... 12 coefficients in total
    ],
    "description" : "standardX",
    "inverseaspectratio": 0.3211009174311926,
    "triangularity": 0.3,
    "elongation": 1.44
}

See also

dg::geo::description to see valid values for the description field

Note

the dg::geo::taylor field is chosen by setting "taylor" in the equilibrium field (but also note that you need to include boost for the taylor field)

Parameters

js	valid Json object (see code above to see the valid key : value pairs)

Note

the default values in brackets are taken if the variables are not found in the input file

Member Function Documentation

display()

void dg::geo::solovev::Parameters::display ( std::ostream & os = std::cout ) const

inline

Write variables as a formatted string.

dump()

dg::file::JsonType dg::geo::solovev::Parameters::dump ( ) const

inline

Put values into a json string.

Returns

Json value

hasXpoint()

bool dg::geo::solovev::Parameters::hasXpoint ( ) const

inline

True if any coefficient c_i!=0 with 7<=i<12.

The Xpoint is situated close to R_X = R_0-1.1*triangularity*a Z_X = -1.1*elongation*a

Returns

true if Psip has an Xpoint, false else

isToroidal()

bool dg::geo::solovev::Parameters::isToroidal ( ) const

inline

True if pp==0.

Returns

true if the flux function is a constant

Member Data Documentation

A

double dg::geo::solovev::Parameters::A

A coefficient.

a

double dg::geo::solovev::Parameters::a

little tokamak radius

c

std::vector<double> dg::geo::solovev::Parameters::c

12 coefficients for the solovev equilibrium;

description

std::string dg::geo::solovev::Parameters::description

elongation

double dg::geo::solovev::Parameters::elongation

elongation of the magnetic surfaces

pi

double dg::geo::solovev::Parameters::pi

prefactor for current I

pp

double dg::geo::solovev::Parameters::pp

prefactor for Psi_p

R_0

double dg::geo::solovev::Parameters::R_0

major tokamak radius

triangularity

double dg::geo::solovev::Parameters::triangularity

triangularity of the magnetic surfaces

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

• solovev_parameters.h