2017 Fiscal Year Final Research Report
Development of Advanced Technology in Electromagnetic Field Analysis for Engineering Application of High-Temperature Superconductor
| Project/Area Number |
15K05926
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Yamagata University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Keywords | 高温超伝導体 / 数値シミュレーション / 非線形方程式 / 有限要素法 / ペレット入射 |
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| Outline of Final Research Achievements |
A high-performance method is proposed for solving a linear system in the shielding current analysis of a cracked high-temperature superconducting (HTS) film. After the discretization, the shielding current analysis reduces to a linear system at each iteration cycle of the Newton method. However, the cracks significantly affect convergence property of a linear-system solver. In order to improve its convergence property, the variable reduction method is proposed. If the method is implemented, the convergence property is hardly influenced by any cracks.
On the other hand, a numerical code is also developed for analyzing the shielding current density in an HTS film that is part of a pellet container moving in an applied magnetic field. In the code, Newton's equation of motion for the pellet container is solved together with the governing equation of the shielding current density. By using the code, the performance of the superconducting linear acceleration system is investigated.
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| Free Research Field |
計算科学，超伝導工学，数値解析学
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