The T-A formulation : an efficient approach to model the macroscopic electromagnetic behaviour of HTS coated conductor applications
Huber, Felix and Song, Wenjuan and Zhang, Min and Grilli, Francesco (2022) The T-A formulation : an efficient approach to model the macroscopic electromagnetic behaviour of HTS coated conductor applications. Superconductor Science and Technology, 35 (4). 043003. ISSN 0953-2048 (https://doi.org/10.1088/1361-6668/ac5163)
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Abstract
In recent years, the T-A formulation has emerged as an efficient approach for modelling the electromagnetic behaviour of high-temperature superconductor (HTS) tapes in the form of coated conductors (CCs). HTS CCs are characterized by an extremely large width-to-thickness ratio of the superconducting layer, normally up to 1000~6000, which in general leads to a very large number of degrees of freedom. The T-A formulation considers the superconducting layer as infinitely thin. The magnetic vector potential A is used to calculate the magnetic field distribution in all simulated domains. The current vector potential T is used to calculate the current density in the superconducting layer, which is a material simulated with a highly nonlinear power-law resistivity. This article presents a review of the T-A formulation. First, the governing equations are described in detail for different cases (2D and 3D, cartesian and cylindrical coordinates). Then, the literature on the implementation of T-A formulation for simulating applications ranging from simple tape assemblies to high field magnets is reviewed. Advantages and disadvantages of this approach are also discussed.
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Item type: Article ID code: 79273 Dates: DateEvent1 March 2022Published2 February 2022Published Online13 January 2022AcceptedSubjects: Science > Physics Department: Faculty of Engineering > Electronic and Electrical Engineering Depositing user: Pure Administrator Date deposited: 25 Jan 2022 13:40 Last modified: 21 Aug 2024 17:39 URI: https://strathprints.strath.ac.uk/id/eprint/79273