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Numerical Study on the Influence of the Speed on the Aerodynamic Thermal in the HTS Maglev–Evacuated Tube Transport System
IEEE Transactions on Applied Superconductivity ( IF 1.8 ) Pub Date : 2021-07-26 , DOI: 10.1109/tasc.2021.3099776
Jukun Wang , Shijie Bao , Xiao Hu , Haitao Li , Zigang Deng

The high temperature superconducting (HTS) maglev–evacuated tube transport (ETT) system is deemed as the next-generation transport system, with the potential to realize ultra-high speed. When the HTS maglev train travels inside the closed tube, it can cause serious aerodynamic thermal problems that affect the traffic safety. In this paper, a three-dimensional model and the Reynolds Average Navier-Stokes (RANS) based on SST k-ω turbulence model are used to study the aerodynamic thermal of the HTS maglev-ETT system. The numerical methods were verified by the wind tunnel experiment of the airfoil. The temperature distribution and aerodynamic thermal phenomena of the train and tube at different speeds were analyzed. The results show that the aerodynamic thermal of the HTS Maglev-ETT system is significantly affected by the speed. Due to the limitation of the annular space, the airflow is compressed in front of the head car and expanded near the tail car, making the temperature field more complex. The faster the train travels, the higher the average surface temperature of the train becomes. The shock wave will appear at a high speed, which further deteriorates the temperature field distribution of the system. These research results can provide a reference for the construction of the HTS Maglev-ETT system.

中文翻译:

高温超导磁悬浮-真空管运输系统速度对气动热影响的数值研究

高温超导(HTS)磁悬浮-真空管运输(ETT)系统被认为是下一代运输系统,具有实现超高速的潜力。HTS磁悬浮列车在封闭管内行驶时,会引起严重的气动热问题,影响行车安全。在本文中,一个三维模型和雷诺平均 Navier-Stokes (RANS) 基于SST k-ω湍流模型用于研究HTS磁悬浮-ETT系统的气动热。通过翼型风洞实验验证了数值方法。分析了列车和管道在不同速度下的温度分布和气动热现象。结果表明,HTS Maglev-ETT系统的气动热受速度显着影响。由于环形空间的限制,气流在头车前被压缩,在尾车附近膨胀,使得温度场更加复杂。火车行驶得越快,火车的平均表面温度就越高。激波会高速出现,进一步恶化系统的温度场分布。
更新日期:2021-08-17
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