Hi Andrea,
Yes unfortunately turning off eps averaging was the only way I could
obtain consistent results for this type of cavity: doi:10.1063/1.3487937
Note that you will have to increase your resolution beyond 30 to obtain
convergence of your results due to the small lattice shifts.
Regards,
Frederic
Frederic
Researcher
Cavendish Laboratory
J J Thomson Avenue
Cambridge CB3 0HE
On 10/02/2011 14:48, Andrea Armaroli wrote:
Dear meep users and developers,
I wrote to this list several days ago about a problem in dealing with
cavities like those of
http://link.aip.org/link/APPLAB/v88/i4/p041112/s1&Agg=doi
<http://link.aip.org/link/APPLAB/v88/i4/p041112/s1&Agg=doi>
Specifically, type A3 of that paper. The simulation diverges, as I can
realize by probing he Hz field at its center.
Using z-reflection symmetry, I noticed divergence does not appear with
a lattice 32x25sqrt(3) large, but occurs with a larger one.
I tried reducing Courant factor (up to 0.2), and adjusting
subpixel-tol to 1e-8 or 1e-2, and finally increasing the cutoff up to
12.0.
No solution worked, only switching eps-averaging off.
I hope this could help to identify the bug or to suggest a better
solution.
Thank you.
Yours Andrea.
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