3-D H-formulation for superconducting wires and the Gmsh cohomology solver
by administrator on Mar 21, 2024 3:23:10 PM
This model was shared by C. Geuzaine, University of Liège.
Analytical model for AC losses in HTS tapes
by administrator on Mar 20, 2024 2:49:29 PM
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, …
Python and Matlab codes to model HTS tapes under arbitrary external field and transport current via integral method
by administrator on Mar 20, 2024 2:44:41 PM
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 …
Alternative to the H-formulation for critical state simulation in HTS materials
by administrator on Mar 20, 2024 2:41:57 PM
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 …
Fully-staggered array of bulk REBCO short-period undulator: large-scale 3-D electromagnetic modelling and design optimization using A-V and H- formulations
by administrator on Mar 20, 2024 2:38:19 PM
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 …
Coupled A-H formulation for magneto-thermal transients in HTS magnets
by administrator on Mar 15, 2024 2:07:11 PM
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, …
AC losses calculation in REBCO coils or stacks
by administrator on Mar 15, 2024 1:51:04 PM
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 …
Open source 2-D finite difference method for the simulation of HTS cables
by administrator on Mar 15, 2024 1:45:54 PM
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 …
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
by administrator on Mar 15, 2024 1:40:00 PM
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 …
GetDP Scripts for simulating superconductors and soft ferromagnetic materials
by administrator on Mar 15, 2024 1:37:04 PM
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 …
