University of Liege, Belgium

报告摘要：

Given the recent improvements of their physical properties, high-temperature superconductors are increasingly used in many applications ranging from particle accelerators and fusion magnets, to electrical machines and power cables. Accurate numerical models of their electric, magnetic, and thermal responses is therefore essential for the design of efficient systems. Specific issues are the strongly non-linear electric response of superconductors and the consequences of their detailed constitutive laws on the macroscopic behavior.  In this talk, recent developments in finite element models for type-II superconductors will be described in the context of the open-source toolkit Life-HTS. More specifically, the choice of a formulation to tackle the strongly non-linear electric response of the superconducting materials will be discussed. Two study cases will be presented: a first one describing an helicoidally-wound tape, for which exploiting the symmetry allows the problem to be reduced to a 2D model with an effective anisotropic medium. The second study case illustrates a model of the macroscopic response of a system with a non-centrosymmetric pinning texture.

报告人简介：

Benoît Vanderheyden is a Professor of the Montefiore Institute, in the Department of Electrical Engineering and Computer Science at the University of Liège, Belgium. He earned a master’s degree in Electrical Engineering from the University of Liège, Belgium, in 1992, and a Ph. D. degree in Physics from the University of Illinois at Urbana-Champaign, USA, in 1998. He held a postdoctoral fellowship at the Niels Bohr Institute from 1998 to 2000 and joined the faculty of the Montefiore Institute in 2000. Since 2022, he is the Director of the Research Unit in the Montefiore Institute. The scientific interests of his group are mainly in the material properties of superconductors, semiconductors, and magnetic materials, in the context of electrical engineering applications.

地点：M236会议室

联系人：朱北沂 副研究员