摘要
为了研究高速铁路地下三岔口隧道内的空气动力学压力场,给出列车穿越地下车站时压力变化的三维黏性流场数值模拟过程.研究结果表明:列车从双线隧道过渡到单线隧道时,双线隧道内同一个测点的最大压力要大于列车从单线隧道过渡到双线隧道时产生的压力;而列车从双线隧道过渡到单线隧道时单线隧道内同一个测点的最大压力要小于列车从单线隧道过渡到双线隧道时产生的压力.其次,在过渡段内,隧道横断面越大,最大压力值越小,且与列车的运行方向无关.当列车会车于过渡段中部时,隧道内压力变化的最大值明显比单线隧道穿越过渡段时的要大很多,但不会达到2倍.
A numerical integration of N-S equations was presented for three-dimensional unsteady viscous compressible isentropic flow to study the compression wave induced by the hlgh-speed train entering into underground Sanchakou station. Result shows that the maximum pressure wave at the same measure point in the double track tunnel when the high-speed train running from double track tunnel to single track tunnel is bigger than that when the high-speed train running from single track tunnel to double track tunnel, while the maximum pressure wave at the same measure point in the single track tunnel when the high-speed train running from double track tunnel to single track tunnel is smaller than that when the high-speed train running from single track tunnel to double track tunnel. The more the cross-sectional area of tunnel, the smaller the pressure wave is regardless of the high-speed train running towards. The maximum pressure wave value at the measure point in the transition section tunnel is obviously bigger when the high speed train passing through in the middle of the transition section tunnel than that when a single high-speed train running through the transition section tunnel and it is no more than two times.
出处
《北京工业大学学报》
CAS
CSCD
北大核心
2013年第1期31-37,共7页
Journal of Beijing University of Technology
基金
国家"863"计划重点资助项目(2011AA11A103)
国家自然科学基金资助项目(51178030)
北京交通大学校基金资助项目(C08J0040)
关键词
高速列车
空气动力学
压力波
三岔口隧道
high-speed train
aerodynamic
compression wave
Sanchakou tunnel
