SpECTRE  v2022.08.01
control_system::size::ControlSignalArgs Struct Reference

Packages some of the inputs to the State::control_signal, so that State::control_signal doesn't need a large number of arguments. More...

#include <State.hpp>

## Public Attributes

double min_char_speed

double control_error_delta_r

double avg_distorted_normal_dot_unit_coord_vector
avg_distorted_normal_dot_unit_coord_vector is the average of distorted_normal_dot_unit_coord_vector over the excision boundary. Here distorted_normal_dot_unit_coord_vector is Eq. 93 of [65]. distorted_normal_dot_unit_coord_vector is $$\hat{n}_i x^i/r$$ where $$\nat{n}_i$$ is the distorted-frame unit normal to the excision boundary (pointing INTO the hole, i.e. out of the domain), and $$x^i/r$$ is the distorted-frame (or equivalently the grid frame because it is invariant between these two frames because of the required limiting behavior of the map we choose) Euclidean normal vector from the center of the excision-boundary Strahlkorper to each point on the excision-boundary Strahlkorper.

double time_deriv_of_lambda_00
time_deriv_of_lambda_00 is the time derivative of the quantity lambda_00 that appears in [65]. time_deriv_of_lambda_00 is (minus) the radial velocity of the excision boundary in the distorted frame with respect to the grid frame.

## Detailed Description

Packages some of the inputs to the State::control_signal, so that State::control_signal doesn't need a large number of arguments.

The documentation for this struct was generated from the following file:
• src/ControlSystem/ControlErrors/Size/State.hpp