control_system::measurements Namespace Reference

Utilities for doing measurements needed by the control system. More...

Namespaces
namespace	Tags
	Tags used for control system measurements.

Classes
struct	BothHorizons
	A control_system::protocols::Measurement that relies on two apparent horizons. More...
struct	BothNSCenters
	Measurement providing the location of the center of mass of the matter in the \(x>0\) and \(x<0\) regions (assumed to correspond to the center of mass of the two neutron stars in a BNS merger). More...
struct	CharSpeed
	A control_system::protocols::Measurement that relies on one apparent horizon, the template parameter Object, and one excision surface. More...
struct	PostReductionSendBNSStarCentersToControlSystem
	Simple action called after reduction of the center of mass data. More...
struct	SingleHorizon
	A control_system::protocols::Measurement that relies on only one apparent horizon; the template parameter Horizon. More...

Functions
void	center_of_mass_integral_on_element (const gsl::not_null< double * > mass_a, const gsl::not_null< double * > mass_b, const gsl::not_null< std::array< double, 3 > * > first_moment_A, const gsl::not_null< std::array< double, 3 > * > first_moment_B, const Mesh< 3 > &mesh, const Scalar< DataVector > &inv_det_jacobian, const Scalar< DataVector > &tilde_d, const tnsr::I< DataVector, 3, Frame::Grid > &x_grid)
	Factored Center of Mass calculation (for easier testing) More...

Detailed Description

Utilities for doing measurements needed by the control system.

Function Documentation

center_of_mass_integral_on_element()

void control_system::measurements::center_of_mass_integral_on_element	(	const gsl::not_null< double * >	mass_a,
		const gsl::not_null< double * >	mass_b,
		const gsl::not_null< std::array< double, 3 > * >	first_moment_A,
		const gsl::not_null< std::array< double, 3 > * >	first_moment_B,
		const Mesh< 3 > &	mesh,
		const Scalar< DataVector > &	inv_det_jacobian,
		const Scalar< DataVector > &	tilde_d,
		const tnsr::I< DataVector, 3, Frame::Grid > &	x_grid
	)

Factored Center of Mass calculation (for easier testing)

Details

This function computes the integral of tildeD (assumed to be the conservative baryon density in the inertial frame), as well as its first moment in the grid frame. The integrals are limited to \(x>0\) (label A) or \(x<0\) (label B).

Parameters

mass_a	Integral of tildeD (x > 0)
mass_b	Integral of tildeD (x < 0)
first_moment_A	First moment of integral of tildeD (x > 0)
first_moment_B	First moment of integral of tildeD (x < 0)
mesh	The mesh
inv_det_jacobian	The inverse determinant of the jacobian of the map between logical and inertial coordinates
tilde_d	TildeD on the mesh
x_grid	The coordinates in the grid frame