横通道对隧道出口微压波影响的数值模拟研究

采用三维粘性、等熵、可压缩、非定常流的Navier-Stokes方程,用有限体积法进行区域离散,对高速列车通过设置有横通道的隧道时所引起的出口微压波进行模拟.研究表明,横通道能降低隧道内的空气压力,其位置和断面大小都对出口微压波有重要影响.

Study of the Influence over Cross Passage on High-speed Railway Tunnel Exit Micro-pressure Wave

This paper presents a cell-centered finite volume scheme for numerical integration of Navier-Stokes equations for three-dimensional unsteady viscous compressible non-homentropic flow to simulate the micro-pressure wave produced by a high-speed train entering a tunnel with a transverse passage-way.The research shows that the cross passage can sharply decrease the peak of the high-speed railway tunnel exit micro-pressure wave,and the site or of the cross passage or the size of the cross passage sectional area play a significant effect on the peak of the micro-pressure wave.