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# Re: [femm] Magnetization circumferencely

- To: <femm@egroups.com>
- Subject: Re: [femm] Magnetization circumferencely
- From: "Eckart Nipp" <eckart.nipp@m-v-l.de>
- Date: Fri, 8 Sep 2000 08:56:53 +0200
- Reply-to: "Eckart Nipp" <Eckart.Nipp@m-v-l.de>

    Hi,

    >Hi I am a new user of femm and am trying to get a circular donut
    >magnatized cicumferencely and am having a hard time figuring out how

    Looking at a donut in a planar coordinate system makes not much sense.
    Hence it should be modelled as an axisymmetric problem. That gives
    just a circle for the geomerty. To achieve a circumferential
    magnetization you would need a thin sheet with an equivalent current
    encircling this magnet. This corresponds then to a toroidal coil.
    However, I don´t know either how to set this current in Femm.

    Eckart

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