文档介绍：中国工程热物理学会传热传质学
学术会议论文编号:123322
基于阻塞比的真空管道交通系统
热压耦合研究
李庆领贾文广董晨光段瑞响
(青岛科技大学机电工程学院, 山东青岛 266061)
(Tel:********** Email:******@qust.)
摘要:利用Ansys仿真软件,基于粘性流体的Navier-Stokes方程和k-ε双方程湍流模型,首次在热压耦合条件下建立真空管道交通系统三维数学模型及物理模型,对不同阻塞比条件下的真空管道系统运行进行数值仿真。结果表明:在列车速度和系统真空度一定的条件下,在温度场中,阻塞比越大,系统所产生的气动热越多,其增长趋势随阻塞比呈指数增长。在压力场中,随着阻塞比的增大,系统驻点处压力逐渐增大,但增长逐渐缓慢;涡街区域压力逐渐减小,且有加速减小趋势;列车首尾两端压差整体上呈线性递增趋势。
关键词真空管道交通; 阻塞比; 热压耦合; 气动热; 气动阻力
中图分类号 TK111 文献标识码 B
Study of thermal-pressure coupling effect in the evacuated tube transportation system on blocking ratio
Abstract: Using the Ansys, based on viscous fluid Navier-Stokes equation and k- ε turbulence model, for the first time in thermal-pressure coupling is established under the condition of vacuum pipeline transportation system of three-dimensional mathematical model and physical model, for different blockage ratios under conditions of ETT run numerical simulation. The simulation results show that: when the speed of the train and the vacuum degree of the system are constants, in the temperature field, the aerodynamic heating is getting more as the blocking ratio increases, and its trend is exponential growth. In the pressure field, with the increase of the blocking ratio, the stagnation pressure is gradually increased, but the growth is getting slower; Vortex region pressure reduces gradually, and has accelerated the decreasing trend; the pressure di