The tube structure is an important guarantee for the dynamic stability of the high temperature superconducting maglev-evacuated tube transport (HTS Maglev-ETT) system, it is necessary to conduct relevant research on it. Based on simulation calculations with the FLUENT software, this paper studied the influences of different tube section forms on the aerodynamic drag of maglev train in tube, as well as the pressure distribution in the tube system. In addition, the effects of the setting of cross aisle on the aerodynamic drag of maglev train and pressure fluctuation of flow field in tube were also studied. It was found that the difference in the section forms of tube has little effect on the aerodynamic drag of maglev train and pressure distribution of the tube system under low pressure; the setting of cross aisle can be helpful to reduce the aerodynamic drag of maglev train and the pressure fluctuation around the train to a certain extent. Therefore, the design of cross aisle is recommended for the HTS Maglev-ETT system.

中文翻译：

---

管结构对真空管运输系统气动特性的影响


管体结构是高温超导磁悬浮真空管运输（HTS Maglev-ETT）系统动态稳定性的重要保证，有必要对其进行相关研究。基于FLUENT软件仿真计算，研究了不同管段形式对磁浮列车管内气动阻力以及管内压力分布的影响。此外，还研究了交叉通道的设置对磁浮列车气动阻力和管内流场压力脉动的影响。发现管道截面形式的差异对磁浮列车气动阻力和低压下管道系统的压力分布影响不大；交叉通道的设置在一定程度上有利于减少磁悬浮列车的气动阻力和列车周围的压力脉动。因此，HTS Maglev-ETT系统建议采用交叉通道设计。