Call: FORCE_FIELD
The coordinates system expected by FORCE_FIELD is the internal
frame. If you describe your cell in Cartesian coordinates, then
the internal frame is simply the Cartesian coordinate system. If
use polar coordinates however, then you should supply the following
parameters:
for x: log(r)
for y: \φ, in radians
The field is returned in internal coordinates. The internal
coordinates system is Cartesian when the cell is described in
Cartesian coordinates, but when you describe the cell in polar
coordinates, you've to apply the following mapping:
Er = Ex/r
Ephi = Ey/r
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Formatted on 21/01/18 at 16:55.