The compression wave produced by a high-speed train entering a tunnel

被引:68
作者
Howe, MS [1 ]
机构
[1] Boston Univ, Coll Engn, Boston, MA 02215 USA
来源
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 1998年 / 454卷 / 1974期
关键词
high-speed train; train entering tunnel; low frequency sound; micropressure wave; Shinkansen; MagLev;
D O I
10.1098/rspa.1998.0220
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
An analytical investigation is made of the compression wave produced when a highspeed train enters a tunnel. The wave propagates ahead of the train within the tunnel at about the speed of sound. In very long tunnels it is transformed by nonlinear steepening into a shock whose amplitude is about 1 or 2% of atmospheric pressure. The emergence of the shock from the far end of the tunnel produces an environmental disturbance analogous to the sonic boom generated by an aircraft in supersonic flight. In this paper the train is modeled by a continuous distribution of monopole sources whose strengths are determined by the train nose profile. The initial wavelength greatly exceeds the tunnel diameter at typical train Mach numbers of about 0.2 and the analytical problem of wave generation by interaction of the monopoles with the tunnel can be solved by use of a compact Green's function. The functional form of Green's function depends on the tunnel entrance geometry and on the proximity of other inhomogeneities, such as embankments, buildings and bridge structures. Detailed predictions are given for axisymmetric 'trains' entering a long circular cylindrical tunnel. The results are found to be in excellent agreement with experimental data. for this configuration available in the literature.
引用
收藏
页码:1523 / 1534
页数:12
相关论文
共 16 条
[1]   GENERATION OF SOUND BY AERODYNAMIC SOURCES IN AN INHOMOGENEOUS STEADY FLOW [J].
HOWE, MS .
JOURNAL OF FLUID MECHANICS, 1975, 67 (FEB11) :597-610
[2]   Mach number dependence of the compression wave generated by a high-speed train entering a tunnel [J].
Howe, MS .
JOURNAL OF SOUND AND VIBRATION, 1998, 212 (01) :23-36
[3]  
IIDA M, 1993, NAT C THER APPL MECH
[4]  
Maeda T., 1993, P INT C SPEED TECHN
[5]  
MESTREAU E, 1993, 930890 AIAA
[6]  
Noble B., 1958, Methods Based on the Wiener-Hopf Technique for the Solution of Partial Differential Equations
[7]   Numerical investigation of three-dimensional compressible flows induced by a train moving into a tunnel [J].
Ogawa, T ;
Fujii, K .
COMPUTERS & FLUIDS, 1997, 26 (06) :565-585
[8]  
OGAWA T, 1996, P EUR COMM C COMP ME
[9]  
OGAWA T, 1994, COMPUTATIONAL FLUID, V3, P63
[10]  
OGAWA T, 1994, P SHOCK WAVE S CHIB