| 摘要: |
| 本文建立了钇钡铜氧化物(YbaCuO，YBCO)在准绝热工况下的失超传播数学模型，包括一组联立的方程及其求解条件，并结合了真空密封套筒内外壁在失超过程中产生的辐射换热对失超的影响。使用COMSOL软件建立了二维计算模型，模拟YBCO带材在不同工况下的失超传播过程，以及失超传播中带材的温度、电势、电阻率和热导率的变化。为了验证模型的准确性,设置了两种工况,去模拟带材失超过程，并与相关模型及实验结果进行比对，以评估模型是否准确。经过比对，该模型成功地模拟出带材失超传播过程，同实验结果相比，本模型与其最小失超能量均在同一数量级；同其他模型相比，两者失超传播速度误差约为15%，且本模型计算结果更接近实验数据。 |
| 关键词: 钇钡铜氧化物 数学模型 失超传播 |
| DOI： |
| 投稿时间：2024-05-07修订日期：2024-05-29 |
| 基金项目:安徽省高校协同创新项目(重点项目，GXXT-2022-012）；安徽理工大学引进人才基金(2021yjrc09)；安徽高校自然科学研究项目(2023AH051185) |
|
| Analysis of normal zone propagation model for YBCO tapes in quasi-adiabatic condition |
|
chen huang1, Liu Yi Neng2, gao peng2
|
| (1.Anhui University of Science and Technology;2.Institute of Plasma Physics, Chinese Academy of Sciences) |
| Abstract: |
| In this paper, a mathematical model of YBCO normal zone propagation is established, including a set of simultaneous equations and the solving conditions. In addition, the influence of radiation heat transfer on the vacuum sealing sleeve during the process of failure is combined .The model has two remarkable characteristics: strong coupling and strong nonlinearity. On this basis, a 2D calculation model was established by using COMSOL, which can simulate the normal zone propagation process of YBCO tapes in different conditions, and obtain the variation the of temperature, electric potential, resistivity and thermal conductivity during the quench process. To verify the accuracy of the model, three working conditions were set to simulate the quench process of the HTS tapes, and a comperition between the simulation results model and other relevant models are made. Compared with the experimental results, the model successfully simulates the process of strip superloss propagation, and the model and its minimum superloss energy are in the same order of magnitude. Compared with other models, the error of hyperlapse propagation velocity is about 15%, and the calculated results of this model are closer to the experimental data. |
| Key words: YBCO, Mathematic model, Normal zone propagating |