超导电磁悬浮力的数值模拟

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才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。

A NUMERICAL SIMULATION OF MAGNETIC LEVITATION FORCE FOR SUPERCONDUCTORS

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.