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# femm 3.0 beta version available

- To: femm@egroups.com
- Subject: femm 3.0 beta version available
- From: dcm3c@aol.com
- Date: Wed, 26 Apr 2000 17:08:47 EDT

    All--

    If anyone is interested in helping test out a new version of the program,
    I've put up a new tester/beta version of the program in the files section of
    egroups:

    http://www.egroups.com/files/femm/

    it's the file ``setup.exe''

    If you download it, make sure _not_ to install it over top of your 2.1
    version. Another important note--it reads in files with the 2.1 file format,
    but when it writes back to disk (upon calling the mesher or solver), it
    writes the files back to disk in a new 3.0 format, which the 2.1 version
    doesn't understand. Therefore, if you are looking at the performance of the
    new beta version on some geometry that you have created with the 2.1 version,
    save it to disk with a different filename before you do anything else. The
    reason for the new file format is so that it is more human-readable and more
    easily extensible in terms of adding in new features in the future.

    There are a bunch of changes from the 2.1 version. Most of them are
    relatively small--to fix things that annoy me with the 2.1 version. The
    biggest change is to harmonic problems--you can now specify connectivities
    between different parts of the solution domain and fix net currents in parts
    via the new "Circuit" property. To me, this was a real shortcoming in the
    2.1 version. There's also a new notion of lumping together groups of
    entities into a parts, so that it is easier to look at the effects of changes
    in geometry and orientation (like looking at the fields of a rotating machine
    at different rotor orientations).

    Unfortunately, I haven't gotten around to updating the manual to reflect all
    of the changes yet....

    Anyhow, I'd be very interested in any comments about this new version.

    Dave.
    --
    http://members.aol.com/dcm3c

- Follow-Ups:
  - Re: FEMM 3.0 Beta Tested.
    - From: Sebastia Jardi Estadella <sje@tinet.org>

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