bfieldtools.mesh_magnetics.magnetic_field_coupling

bfieldtools.mesh_magnetics.magnetic_field_coupling(mesh, r, Nchunks=None, quad_degree=1, analytic=False)

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

Parameters

mesh: Trimesh mesh object

mesh describing the geometry of the field source

r: ndarray (Np, 3)

evalution points

quad_degree: int >= 1

Quadrature degree (Dunavant scheme) to use.

analytic: boolean

compute field using analytic formula (True) or quadrature (False)

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