Model files

Coupled A-H formulation for magneto-thermal transients in HTS magnets

These models were shared by shared by Lorenzo Bortot, CERN. The two models implement a coupled A-H field formulation in FEM, solving for H in the superconducting tapes, and for A elsewhere. The tapes are represented either by means of 2D domains or 1D thin-shells. For the second case, …

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New benchmark problem for electromagnetic modelling of superconductors: the high-Tc superconducting dynamo

The high-Tc superconducting (HTS) dynamo has recently been proposed as a new benchmark problem for the HTS modelling community. The benchmark geometry consists of a permanent magnet rotating past a stationary HTS wire in the open-circuit configuration and assumes for simplicity the 2D …

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AC losses calculation in REBCO coils or stacks

This model can calculate HTS stack/coil with various applied current and magnetic field. Its greatest advantage is the calculating speed could be very fast. The model is calculated by integration method, which was first proposed by Brandt for HTS tape. Here it is extended to ReBCO sta …

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H-ϕ formulation in COMSOL Multiphysics for simulating the magnetization of bulk superconductors and comparison with the H-formulation

These models use the H-phi formulation to efficiently calculate the magnetic field produced by a superconducting bulk magnetized by zero field cooling in a uniform magnetic field. The models are created in COMSOL Multiphysics 4.3b and COMSOL Multiphysics 5.5 in order to be more access …

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Open source 2-D finite difference method for the simulation of HTS cables

In this work a two-dimensional open source simulation code based on the finite difference method (FDM) has been developed. It is solved by means of the alternating direction implicit routine (ADI). The algorithm has been written in MATLAB language. The method improves computational pe …

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ANSYS APDL codes for modelling the critical state magnetization current in REBCO tape stacks with a large number of turns using the A-V formulation

An iterative algorithm method, based on ANSYS A–V formulation, is developed to simulate the critical state magnetization current Jc(B,θ) in ReBCO tape stacks during the field-cooling magnetization. The computation speed is quite fast because the eddy current is not computed in non-sup …

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GetDP Scripts for simulating superconductors and soft ferromagnetic materials

Models based on GetDP as a finite element solver and Gmsh as a mesh generator. The models include an E-J power law for superconductors and an anhysteretic law for ferromagnetic materials. The finite element method is implemented either with an A- or an H-formulation, for tapes, cylind …

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MATLAB scripts for simulation of superconductors (tapes, bars and cylinders)

Scripts for Matlab to simulate superconducting strips, bars and cylinders in various conditions of applied magnetic fields and currents. To find the current distribution, an integral formulation known as Brandt’s method is used.

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T-A multi-scale and homogeneous models for benchmark #3

These two models address the analysis of the Benchmark #3, a 20 HTS tapes stack. The models show how the multi-scale and homogeneous methods are adapted to be used in conjunction with the T-A formulation. The achieved simplification in the description of the system allow to reduce the …

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AC losses in a superconducting magnet in the presence of a time-dependent transport current

This model is based on ANSYS 15.0. The model calculates the AC loss in a superconducting magnet in the presence of a time-dependent transport current. The superconductor is modeled with Bean model. The parameters and outputs are all in text format, can be easily read and modified. Alm …

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