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HomerReid / scuff-em

A comprehensive and full-featured computational physics suite for boundary-element analysis of electromagnetic scattering, fluctuation-induced phenomena (Casimir forces and radiative heat transfer), nanophotonics, RF device engineering, electrostatics, and more. Includes a core library with C++ and python APIs as well as many command-line applications.
http://www.homerreid.com/scuff-em
GNU General Public License v2.0
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wavenumber “k” #153

Closed Kevin035 closed 6 years ago

Kevin035 commented 6 years ago

Dear prof. Reid, I was puzzled by the wavenumber. If the KIndex equals TD_HIGHK_HELMHOLTZ in scuff-em/doc/docs/forDevelopers/SingularIntegrals/TestTaylorDuffy.cc line 19， then the Kparam's imaginary part must be infinite. Is there any realistic situation when the wavenumber "k" imaginary party is infinite?

HomerReid commented 6 years ago

Yes, this case is relevant for computations at finite frequencies in lossy media, in which case the wavenumber acquires a large imaginary part, corresponding to rapid spatial decay of the fields. This is discussed in Section VIII of this paper.

Feel free to ask more questions, or close the issue if satisfied.

Kevin035 commented 6 years ago

Thank you for your reply. I want to download the MATHEMATICA code of Fig.3 in the paper, but I can not open the website.

HomerReid commented 6 years ago

Thanks for the bug report. This is now fixed:

http://homerreid.github.io/scuff-em-documentation/forDevelopers/SingularIntegrals/

Feel free to ask more questions, or close the issue if satisfied.

Kevin035 commented 6 years ago

Thank you very much.