一种改进的J模型，用于利用显式-隐式混合算法高效计算ReBCO无绝缘饼式线圈的电磁场
A modified J model for efficiently calculating the electromagnetic fields of ReBCO no-insulation pancake coils using an explicit-implicit hybrid algorithm
AI总结：
本文提出改进的J模型及显式-隐式混合算法，用于高效计算ReBCO无绝缘饼式线圈的电磁场，数值结果与实验和电路模型吻合，且可扩展至大规模线圈。
摘要：
稀土(Re)Ba2Cu3O7-x (ReBCO)无绝缘(NI)线圈因其优异的电磁和热性能而受到广泛关注。然而，NI线圈中匝间分流的存在增加了数值模拟的复杂性。本文提出了一种改进的J模型，并设计了相应的显式-隐式混合算法来计算NI线圈。数值结果与实验数据和电路模型吻合良好。还提出了均匀化模型来模拟背景磁体中的大规模NI线圈。改进的J模型具有较高的精度和较快的计算速度，也可用于高效求解绝缘线圈的电磁场。
英文摘要：
Rare-earth (Re)Ba2Cu3O7-x (ReBCO) no-insulation (NI) coil is widely concerned due to its excellent electromagnetic and thermal properties. However, the presence of the turn-to-turn shunts in NI coils leads to that complexity of numerical simulation is increased. In this paper, a modified J model is proposed and the corresponding explicit-implicit hybrid algorithm is designed to calculate NI coils. The numerical results are in good agreement with the experimental data and the circuit model. The homogenization model is also proposed to simulate the large-scale NI coils in the background magnets. The modified J model has good accuracy and fast calculation speed, which can also be used to solve electromagnetic fields of insulation coils efficiently.
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