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# [femm] Re: Simmetry on planar problems

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- Subject: [femm] Re: Simmetry on planar problems
- From: Dcm3c@aol.com
- Date: Thu, 13 Jan 2000 09:34:12 EST
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    In a message dated 1/12/00 12:45:29 PM Eastern Standard Time,
    tecnico@sincro.it writes:

    > Thank you Dave, I have installed premesh.exe and everything works fine.

    Good. It's always hard to tell if a program will work the same way one
    someone else's machine as it does on my own.

    > There is something more that I would like to ask. Since rotating machinery
    > have a good simmetry, is there a way to model only a slice of the machine
    (1
    > or 2 poles) and tell the program that along a segment there is a simmetry
    in
    > tangential and/or normal components of the field or that along the two
    radial
    > segments of the slice the vector potential must be the same? In this way I
    > could save a lot of CPU time to obtain the same information (especially
    when
    > I perform several calculations to find the best solution).

    This would be useful to me as well. I'm planning to add it, but I haven't
    gotten around to it yet.

    > In future versions it would be interesting and time saving to have the
    > possibility to suggest a starting point for the kernel iteration (a .ans
    > file) when I have the same geometry and different (but not too much)
    currents.

    I hadn't really thought too much about this one before, but it could be a
    time saver. I'll think about it some...

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

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