Re: NEC-LIST: Field animations

Could one do this in two steps? NEC to calculate near field (including
phase) and then something like POVray to step through the phases generating
an animation. Arie's 4nec2 can generate POVray files (at least for geometry
and far field.. I haven't tried for near field distributions)... presumably,
you'd have to specify some "cut" through the field, and then it would be a
fairly straightforward thing to integrate the phase/time stepping with
POVray's animation features

NEC couldn't directly do phenomena that last more than one cycle (like two
coupled resonators, for instance), because I think the basic assumption
behind MoM codes is steady state (i.e. it's at one frequency). Could one,
though, run two (or more) NEC sims at different (or multiple) frequencies
and then synthesize the coupled stuff with a simple linear combination
(after all, POVray can do the arithmetic)? The systems are linear, and
superposition holds....

----- Original Message -----
From: "David Jefferies" <d.jefferies_at_surrey.ac.uk>
To: <nec-list_at_gweep.ca>
Sent: Tuesday, January 14, 2003 6:50 PM
Subject: NEC-LIST: Field animations

> Dear List,
>
> I wondered if any of the flavours of NEC can be made
> to produce an animation (over a cycle) of the near fields and the
> near-far field transition region for (say) differently
> coloured E and H field components? Or perhaps one would
> need an FDTD method to do this? Apologies if this has
> come up in the NEC list archives somewhere.
>
> Regards
>
> --
> David Jefferies
> http://www.ee.surrey.ac.uk/Personal/D.Jefferies/
> http://www.eryptick.net/
> fax +44 (0)1483 534139 attn D.Jefferies
> --
> The NEC-List mailing list <nec-list_at_gweep.ca>
> http://www.gweep.ca/mailman/listinfo.cgi/nec-list

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