Model files / 2-D

Analytical model for AC losses in HTS tapes

This model was shared by João Fernandes, Instituto Superior Técnico, Ulisboa. This work proposes two alternative analytical models to evaluate the AC losses of High-Temperature Superconducting (HTS) tapes during their hysteretic and resistive modes. Two analytical models are proposed, …

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Python and Matlab codes to model HTS tapes under arbitrary external field and transport current via integral method

This model was shared by Calvin C. T. Chow, The University of Hong Kong. These Python and Matlab codes calculate ac loss of HTS tapes that are under two types of non-uniform external field whilst carrying a transport current. The two types are (1) field created by a point current sour …

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Alternative to the H-formulation for critical state simulation in HTS materials

This model was shared by Dong Keun Oh, Korea Institute of Fusion Energy. This model is developed as an attempt of static H-formulation to substitute for the magnetic formulation (A-formulation) of “the self-consistent static critical current model” which has been recognized as an effi …

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Fully-staggered array of bulk REBCO short-period undulator: large-scale 3-D electromagnetic modelling and design optimization using A-V and H- formulations

This model was shared by Kai Zhang, Paul Scherrer Institute, Switzerland and Mark Ainslie, University of Cambridge, UK. In this shared model, implemented in ANSYS 2020R1 Academic, the theory of the 2D A-V formulation-based backward computation method is extended to calculate the criti …

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COMSOL implementation of the H-ϕ formulation with thin cuts for modeling superconductors with transport currents

These models were shared by Alexandre Arsenault, Polytechnique Montréal, Montréal. These two models use thin cuts with the H-phi formulation in COMSOL Multiphysics 5.5 to efficiently model transport currents in superconducting materials. The magnetic scalar potential is set to be disc …

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Modeling of HTS bulks surrounded by magnetic components using the H–φ formulation

These models were shared by Alexandre Arsenault, Polytechnique Montréal, Montréal. These two models use the reduced H-phi formulation to efficiently simulate the magnetic field of a superconducting bulk surrounded by magnetic components. The magnetic field is separated into a source a …

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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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