could you send me you ctl file of 2D system,because i have similar problem is 2D,thanks
在2013-07-10 13:35:36,<nw...@mail.sim.ac.cn>写道： > Dear meep users, > I am trying to use periodic boundary conditions in 3D. > In 2D it works perfectly, however when I extend the code to 3D the results > are incorrect. I have attached the code to this massage. The simulation is > very simple just a plane of source on a glass block, to measure the > reflection from the glass. > Anyone knows what exactly is wrong with this code? > > ####################################################################### > (define-param a 0.1); > > (define-param sy 80) ; size of cell in y direction > (define-param dpml 25) ; PML thickness (y direction only!) > (set! pml-layers (list (make pml (direction Y) (thickness dpml)))) > (set! geometry-lattice (make lattice (size 10 sy 10))) > > (set-param! resolution 20) > > (define-param reference? false) > > (if reference? > > (begin > (set! geometry (list > (make block (center 0 0) (size infinity sy infinity) > (material air)) > )) > ) > > (begin > > (set! geometry > (append ; combine lists of objects: > > (list > > (make block (center 0 -20) (size infinity 40 infinity) > (material (make dielectric (epsilon 2.25))) ) > > > ) > > > > > )) > )); > > > ; Define frequency range: > ; ----------------------- > > (define-param fcen 0.18665) ; pulse center frequency > (define-param df 0.2933) ; pulse width > > ; Define source: > ; -------------- > (set! sources (list > (make source > (src (make gaussian-src (frequency fcen) (fwidth df))) > (component Hz) (center 0 5 0) (size 10 0 10)))) > > (set! symmetries (list > (make mirror-sym (direction X) (phase -1)) > > > > )) > > > ; Fluxes: > ; ------- > (define-param nfreq 500) ; number of frequencies at which to compute flux > > (define trans_X ; transmitted flux > (add-flux fcen df nfreq > (make flux-region > (center 0 -5 0) (size 10 0 10) (direction X)) > )) > > (define trans_Y ; transmitted flux > (add-flux fcen df nfreq > (make flux-region > (center 0 -5 0) (size 10 0 10) (direction Y)) > )) > > (define refl_X ; reflected flux > (add-flux fcen df nfreq > (make flux-region > (center 0 1 0) (size 10 0 10) (direction X)) > )) > > (define refl_Y ; reflected flux > (add-flux fcen df nfreq > (make flux-region > (center 0 1 0) (size 10 0 10) (direction Y)) > )) > > > ; Run simulation: > ; --------------- > (set-param! k-point (vector3 0 0 0)) > (run-sources+ 500 > (at-beginning output-epsilon) > ) > > > (display-fluxes trans_X trans_Y refl_X refl_Y) > > > > _______________________________________________ > meep-discuss mailing list > meep-discuss@ab-initio.mit.edu > http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss _______________________________________________ meep-discuss mailing list meep-discuss@ab-initio.mit.edu http://ab-initio.mit.edu/cgi-bin/mailman/listinfo/meep-discuss
