bluemira.equilibria.boundary

Boundary conditions for equilibria.

Classes

FreeBoundary

Object representing a free boundary condition, accounting for only the

Functions

apply_boundary(rhs, lhs)

Applies a boundary constraint to the boundaries of an array for use on finite

Module Contents

class bluemira.equilibria.boundary.FreeBoundary(grid: bluemira.equilibria.grid.Grid)

Object representing a free boundary condition, accounting for only the plasma psi

Parameters:

grid (bluemira.equilibria.grid.Grid) – The grid upon which to apply the free Dirichlet boundary condition

__slots__ = ('dx', 'dz', 'edges', 'f_greens')
edges
f_greens
__call__(psi: numpy.typing.NDArray[numpy.float64], jtor: numpy.typing.NDArray[numpy.float64])

Applies a free boundary (Dirichlet) condition using Green’s functions

Parameters:

  • psi (numpy.typing.NDArray[numpy.float64]) – The poloidal magnetic flux [V.s/rad]

  • jtor (numpy.typing.NDArray[numpy.float64]) – The toroidal current density in the plasma [A/m^2]

Notes

Modifies psi in-place

bluemira.equilibria.boundary.apply_boundary(rhs: numpy.typing.NDArray[numpy.float64], lhs: numpy.typing.ArrayLike)

Applies a boundary constraint to the boundaries of an array for use on finite difference grids.

Parameters:

  • rhs (numpy.typing.NDArray[numpy.float64]) – The right-hand-side of the equality

  • lhs (numpy.typing.ArrayLike) – The left-hand-side of the equality If 0, will apply a fixed boundary condition of 0 to the rhs

Notes

Modified rhs in-place; applying lhs boundary condition