Near Field¶

class pyMPM.Near_Field(box, E0, radius=1, dip=None, dip_pos=None, field_points=None, xi=0.5, errortol=0.001)¶

Calculate the electric field at points for the given dipoles at dip_pos.

Parameters

box: A 1D array of length three specifying Lx, Ly, and Lz.
E0: The incident field. 1D array of length three.
radius: The radius of the dipole particles. Defaults to 1 (assumed nondimentionalized).
dip: A 2D array (num_dipoles,3) specifying the dipoles contributing to the electric field in units of eps_m*|E_0|*R**3 (the same as the MPM class returns). Can also be set with set_dipoles method, but must be set before calling calculate.
dip_pos: A 2D array (num_dipoles,3) specifying the position of the dipoles contributing to the electric field. Can also be set with set_dip_pos method, but must be set before calling calculate.
field_points: A 2D (num_field_points, 3) array specifying the field_points points where the electric field_points should be calculated. Can also be set with set_field_points method, but must be set before calling calculate.
xi: Ewald parameter. Defaults to 0.5
errortol: The error tolerance. Defaults to 0.001.

set_dipoles(dip)¶

Used to set or change the dipoles.

Parameters

set_dipole_positions(dip_pos)¶

Used to set or change the dipole positions.

Parameters

set_field_points(field_points)¶

Used to set or change the field points.

Parameters

field_points: The field points where the electric field should be calculated.

calculate()¶

Calculates the electric field intensity at each field points.

Returns