中文摘要：

为解决不同参数下真空管道交通系统的运行能耗问题,建立数学模型,在超高速状态下对模型进行数值仿真模拟。计算结果得出：在一定的列车运行速度情况下,列车牵引力能耗随着系统压力增大逐渐增大,且急剧升高,即系统内列车牵引力能耗随着系统压力升高呈直线趋势增长;维持真空度能耗随着系统压力增大逐渐降低,但变化较小。列车运行总能耗随着系统压力增大呈直线增长趋势,且呈直线趋势增长。随着阻塞比的增大,当系统内压力低于25250 Pa时,系统总能耗曲线有交叉点,系统总能耗反而小;随着系统内压力进一步增加,牵引力能耗急剧增加,但维持真空度能耗变化缓慢,促使阻塞比越大,系统运行总能耗越多。但随着系统阻塞比的增长,管道内径就越小,会促使建设成本降低。因此,在研究真空管道交通系统建设成本和运行成本上要综合考虑其影响参数。

英文摘要：

The total energy,consumed in evacuated tube transportation（ ETT） including the train-driving and vacuum-pumping powers,was mathematically formulated with the train＇s differential pressure model and numerically simulated. The influence of ETT conditions,such as the pressure,aerodynamicdrag,speed and blockage-ratio,on the total energy consumption was investigated. The simulated results show that the pressure,speed and blockage-ratio significantly affect the total power. For example,at a given speed,as the pressure increases,the total power sharply increases because the rapid increase of driving-power overrides the slow decrease of pumping-power. As the blockage-ratio increases（ reduces the tube-radius / construction-cost）,the total power is fairly low at a pressure below25250 Pa,at which the blockage-ratio dependent energy consumption curves intersect; however,at a pressure above25250 Pa,a higher blockage ratio increases the total power because the fast increase of driving-power overweighs the slow decrease of pumping-power.