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# frequency range

- To: femm@yahoogroups.com
- Subject: frequency range
- From: corneliuspaul@gmx.de
- Date: Fri, 1 Jun 2001 09:52:03 +0200 (MEST)

    Dave,

    many thanks for the explanations. Am getting familiar with the software more
    and more. i will report my findings later on.
    once again a big thank you for providing this software for free.
    good luck,
    cornelius

    >"Low frequency" means problems that can be described by a diffusion
    >equation
    >rather than by a wave equation. There are some metrics that you can look
    >at--basically the wavelength at the frequency of interest must be much
    >longer
    >than some characteristic lengths of your problem. For some details, check
    >out
    >http://web.mit.edu/6.013_book/www/chapter15/15.3.html. At the frequencies
    >that
    >you are looking at in a transformer-sized domain, the low-frequency
    >formulation
    >ought to be ok.

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