Benchmark #1

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Single thin rectangular tape, width: 12 mm, thickness: 1 μm, Ic=300 A, frequency=50 Hz


  1. I/Ic=0.5 to study J and By profiles along the width of the tape (halfway across the thickness, i.e. from x=-6 mm to x=6 mm, y=0)
  2. I/Ic=0.1, 0.2,…,0.9 to compute the AC loss.


Benchmark #2

One thin rectangular superconductor with magnetic substrate in applied perpendicular field.

HTS width: 2 mm, HTS thickness: 1 μm, Ic=50 A, substrate width= 2 mm or 2.2 mm, substrate thickness=75 μm, separation between HTS and substrate (distance between the top of the substrate and the bottom of the HTS): 0.8 μm, magnetic permeability of the substrate: μr=100 (linear, isotropic), Frequency of the applied field: 50 Hz, amplitude of the applied field: from 1 to 20 mT (suggested values: 1,2,5,10,20).

Simulations (e.g. at 20 mT):

  1. J and B profiles in the individual tapes (see previous benchmark)
  2. AC loss in HTS


Benchmark #3

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Twenty superposed thin tapes representative of the cross-section of a racetrack coil. Tapes are connected in series. A symmetry plane is defined to take into account the presence of the other part of the coil. Tape width: 12 mm Ic=300 A. Distance between HTS tapes (center-to-center for each HTS film): 250 μm. Distance between inner tape and symmetry plane: 10 cm Frequency=50 Hz


  1. I/Ic=0.5 to study J and B profiles in the individual tapes
  2. I/Ic=0.1, 0.2,…,0.9 to compute the AC loss


Benchmark #4

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A superconducting bulk cylinder subjected to magnetization. With the use of an axis-symmetric model the geometry can be reduced to 2-D Cylinder’s radius: R=12.5 mm Cylinder’s height: L=10 mm Jc=3·10^8 A/m^2, [t1,t2,t3]=[ 5,10,15] s, magnetic field ramp: as displayed at the bottom of the figure below (Bmax=1 T)

Compare J distributions and magnetization at t1, t2, t3; Bz profiles 2 mm above surface, dissipation.



Benchmark #5

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A superconducting bulk cube subjected to magnetization, to be simulated in 3-D.

Bulk side: 10 mm, Jc=10^8 A/m^2. In case power-law is used: n=100. The cube is subjected to a sinusoidal magnetic field in the z direction: amplitude=200 mT, frequency=50 Hz.

Compare J distributions at the cross-sections: Jy at y=5 mm, Jz at y=0.12 mm and z=1.1 mm, |J| at z=0.12 mm and z= 5 mm.

Compare also initial magnetization curve M(H) from t=0 s to the first peak (t=0.005 s).



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