摘要
利用超导体宏观电磁场的Kim模型对高温超导体 -永磁铁悬浮系统中二者之间的电磁悬浮力进行了定量计算与模拟 .通过与已有实验结果比较表明 :对超导悬浮力的数值模拟能较好地反映悬浮力的主要特征 .在此基础上 ,给出了超导体内屏蔽电流、铅直悬浮力和面内电磁力的分布情况 .数值仿真结果显示了悬浮力的大小与永磁铁的表磁强度和尺寸有关 .这些结果为提高超导悬浮力和改进超导宏观电磁场模型提供了理论依据 .
This paper presents a quantitative simulation of magnetic levitation force for a high temperature supercondutor-permanent magnet system on the basis of the Kim model for macroscopic electromagnetic fields of superconductors. By comparing the predictions with those experimental results reported in literature, it is found that some main characteristics of the levitation force can be captured by the numerical model or methodology. After that, the distributions of shielding current on/in the superocondutor, and both vertical and in-plane components of the magnetic force between the permanent magent and the superconductor are displayed. The theoretical results show that the magnitude of levitation force is mainly dependent upon both intensity and geometric size of the permanent magnets employed. These results and methodology is potentially useful for the development or advancement of a design of superconducting magnetic levitation system to increase the levitation force and to revise the macroscopic model of superconductors.
出处
《固体力学学报》
CAS
CSCD
北大核心
2003年第1期16-23,共8页
Chinese Journal of Solid Mechanics
基金
国家杰出青年基金
国家自然科学基金重点项目 (10 132 0 0 0 1)
科技部重大基础研究前期预研专项基金资助
关键词
高温超导体
悬浮力
Kim模型
数值模拟
超导材料
high temperature superconductor, magnetic levitation force, Kim model, numerical simulation
