bfieldtools.mesh_magnetics.magnetic_field_coupling_analytic

bfieldtools.mesh_magnetics.magnetic_field_coupling_analytic(mesh, r, Nchunks=None)

Computes the coupling matrix which gives the magnetic field at target points due to currents (stream function) on a surface mesh using analytical formulas.

Parameters

mesh: Trimesh mesh object

mesh describing the geometry of the field source

r: ndarray (Np, 3)

evaluation points

Nchunks: int

number of chunks used in the calculation for saving memory

Returns

C: ndarray (Np, 3, Nvertices)

Coupling matrix corresponding to a mapping from a stream function on the mesh to B-field at the evaluation points