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# Re: [femm] calulation of the magnetic flux

- To: femm@yahoogroups.com
- Subject: Re: [femm] calulation of the magnetic flux
- From: David Meeker <dmeeker@ieee.org>
- Date: Fri, 07 Mar 2003 09:27:47 -0500
- In-reply-to: <b49nbs+5veo@eGroups.com>
- References: <b49nbs+5veo@eGroups.com>
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`Michael Salloker wrote:`

> `Hello,`

>     I want to calculate the magnetic flux through an area, i.e.
>     integrating the flux density. I wonder if the block integral "B over
>     block" does this. Considering a planar problem, it should be no
>     problem, dividing the result by the height, but in a rotational case?

> `Michael`

`It sounds like what you really want is the B.n line integral, which gives you all of the flux passing through a surface. This works "right" in the axisymmetric case, giving you the flux that passes through a cylindrical shell defined by the revolution of the prescribed contour about the r=0 axis.`
`Dave.`

    --
    David Meeker
    email: dmeeker@ieee.org
    www: http://femm.berlios.de/dmeeker

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