A small question about viewing results of magnetic field

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lishahuo
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A small question about viewing results of magnetic field

Post by lishahuo » 26 Feb 2020, 16:41

When I want to view the simulation results of magnetic field, I see two choices:
magnetic flux density and magnetic flux density_e.
What do they mean separately? What's the difference?
Thanks!
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mika
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Re: A small question about viewing results of magnetic field

Post by mika » 26 Feb 2020, 17:49

"magnetic flux density" gives the best global fit where the basis for the approximation is spanned by the usual Lagrange (nodal) basis functions. "magnetic flux density e" is obtained by making the best fit elementwise without solving a large system. The first way (the global fit) may smear discontinuities which can be natural to the solution.

-- Mika

lishahuo
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Re: A small question about viewing results of magnetic field

Post by lishahuo » 26 Feb 2020, 18:19

That's clear! Thanks Mika!!! :)

raback
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Re: A small question about viewing results of magnetic field

Post by raback » 28 Feb 2020, 01:17

Hi

Just a note: in VTU output there is a keyword "Discontinuous Bodies = Logical True" that takes nodal averages of the elemental fields within each body while enriching the visualization space with some additional nodes at the interfaces to allow solutions to be discontinuous between different bodies. This gives the prettiest pictures.

-Peter

lishahuo
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Re: A small question about viewing results of magnetic field

Post by lishahuo » 04 Mar 2020, 12:37

Hi Peter!

Thanks for the clarification! I will try :)

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