On Mar 12, 2008, at 11:50 AM, Puck Ja wrote: > Dear Meep users: > > The ring_cyl.ctl example shows how to use cylindrical symmetry to > reduce a 2D problem into a 1D one. The source is a Ez diople. > However, if I changed it to Ex (actually Er in the cylindrical > coord.), MEEP will give me an error: > > meep: Invalid fields::loop_in_chunks grid type ex for dimensions > Cylindrical > > Same thing to the Ey (or E_phi) source.
You have to specify it as Er and Ep for a source in the radial or the phi direction respectively. This is *not* the same as Ex, because an Er source in cylindrical coordinates is a ring of dipols pointing radially outwards (or inwards), not just in the x direction. Regards, Steven G. Johnson _______________________________________________ meep-discuss mailing list [email protected] http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
