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Plotting magnetic field lines in 3D
Posted 4 feb 2021, 09:28 GMT-5 Low-Frequency Electromagnetics Version 5.5 3 Replies
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I'm trying to plot magnetic field lines in 3D, but when I select the streamline surface plot, it gives me magnetic flux density by default (mf.Bx, mf.By, mf.Bz) (in units of Teslas, see picture 1).
What I want is what one gets when plotting contour plots in 2D-axisymmetric, which is mf.Aphi x r (in units of Wb, see picture 2).
I checked out this answer, I've tried transforming between coordinate systems (cylindrical in I've tried transforming between coordinate systems (cylindrical in 2D-axisymmetric to cartesian in 3D), but this doesn't work. Specifically, I tried to use mf.Ax, mf.Ay, mf.Az with various expressions of r, such as r = sqrt(x^2 + y^2), but it doesn't plot what I'm looking for. I've also tried plotting contour plots on the cut plane, but it also doesn't look right (picture 3).
Any help is appreciated. Thanks!
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The magnetic flux density B is often the right choice for plotting field lines. But since you are exploring the options, have you considered plotting the H field?
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Hi Robert, yes I have. It gave basically the same results as the B field.
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I realised the problem - wasn't visualisation-related (had the wrong polarity on the electromagnets). Thanks for your suggestion though!