Development of High-Performance Electromagnetic Analysis for Design of Engineering Application of High-Temperature Superconductor

由于屏蔽电流密度的计算是高温超导体(HTS)工程应用中不可缺少的，目前已经发展了各种数值方法来分析屏蔽电流密度。然而，所有的方法都受到以下两个致命困难的困扰：(1)隐式格式导致速度慢；(2)无法处理含裂纹或孔洞的高温超导样品。在本研究中，提出了两种新的数值方法，即本构关系修正法和虚拟电压法来解决上述两个难题。

Since evaluation of the shielding current density is indispensable to engineering applications of high-temperature superconductors (HTSs), various numerical methods have been so far developed for analyzing the shielding current density. However, all of the methods have been plagued by the following two fatal difficulties : (1) slow speed due to implicit schemes and (2) disability to treat HTS samples containing cracks or holes. In the present study, two novel numerical techniques, i. e. constitutive-relation-modification method and virtual-voltage method, are proposed for resolving the above two difficulties.