高温超导带最小触发能量的有限元分析  

FINITE ELEMENT ANALYSIS OF MINIMUM QUENCH ENERGY OF HTS TAPE

作　　者：吴春俐[1] 白质明[2] 何砚发[2] 王金星[2] 

机构地区：[1]东北大学电子信息工程研究所,沈阳110004 [2]东北大学物理系,沈阳110004

出　　处：《低温物理学报》2003年第A01期262-265,共4页Low Temperature Physical Letters

摘　　要：本文用有限元方法(finiteelementmethod ,简称FEM)对Bi2 2 2 3/Ag高温超导多芯带材的最小触发能量进行了理论估算 ,得到最小触发能量 (MQE)与传输电流 (It)之间的关系并与实验结果进行了比较 .通过计算机模拟运算 ,可以方便得到加热器触发局域失超后的失超传播过程中超导带的空间和时间的温度分布 .研究表明 ,建立合适的热分析模型 ,用有限元分析可以模拟出超导体失超传播过程中由超导态过渡到正常态的温度变化行为 .This paper presents some analytical results of the minimum quench energy (MQE) of the Bi2223/Ag high temperature superconducting multifilament tape with the finite element method (FEM). We derived the relation between MQE and transport current (I-t) and compared these with the case of experiments. After local-zone quench is induced by the pulse heater, the temperature profile of space and time in the quench propagation process can be conveniently derived by computer simulation. The research results show that the temperature transition behaviors from superconducting-state to normal-state in quench propagation process of superconductor can be simulated through establishing the suitable thermal analytical model.

关 键 词：高温超导 触发能量 有限元分析 铋2223超导体 银包套 传输电流 热传导微分方程 

分 类 号：O511[理学—低温物理]