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Use data from a magnetic map file as initial magnetic field
Posted 2018年3月16日 GMT+8 00:53 Low-Frequency Electromagnetics, Parameters, Variables, & Functions Version 5.2a 0 Replies
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Hello everyone,
I try to import a magnetic field from a map , and then use it as an initial magnetic field, and see how it is modified by adding new elements, such as coils.
For this I use "Interpolation" (in definition) to get the componant Bx, By Bz from my file depending of the position.
Then in "MagneticField"->"Background Field", I solve for reduce field, and give as background magnetic flux density Bb the componant Bx, By, Bz from my interpolation.
I also declare a "Magnetic Potential" at the edges of my geometry.
I tried with a very simple 3D map, where Bx(x,y,z) = By(x,y,z) = 0 and Bz(x,y,z) = z * 1(T/m) ,
For the solution, I plot the componant normB from my interpolation, which gives me exactly what i am waiting for, but when I plot the componant from the solution "mf.normB", I get something different, and I don't understand why, so I request your help !
I am using COMSOL v5.2a
I join you the model fieldfrom_map3D.mph and the simple map field simple_map.dat
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Hello Thomas Lefort
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