The Characteristics of the Spatial and Temporal Distribution of the Initial Compression Wave Induced by a 400 km/h High-Speed Train Entering a Tunnel
Source abstract
Abstract
The initial compression wave induced by a 400 km/h high-speed train entering a tunnel in two cases (offset running and center running) is investigated by overset mesh technology. The governing equations of the IDDES model for three-dimensional, unsteady, compressible flow are employed. The meshing strategy and numerical algorithm are validated by moving model test data. The spatial and temporal distribution characteristics of the initial compression wave and the one-dimensional planar wave characteristics are analyzed. The results show that the compression waves undergo three stages: from an irregular spherical shape near the train to an oblique shape, and finally to a one-dimensional planar wave. The initial compression wave captured at the measurement points at a distance of 5Di (Di represents the equivalent diameter of the tunnel) from the tunnel portal has been fully characterized by one-dimensional features, which can provide a boundary input for the propagation of the initial compression wave towards the tunnel exit. Compared to the offset running case, the initial compression wave amplitude and pressure gradient amplitude induced by central running are reduced by 3.66% and 6.87%, respectively.
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Research context
OpenAlex topics: Aerodynamics and Fluid Dynamics Research · Wind and Air Flow Studies · Fluid Dynamics and Vibration Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Gansu Province Engineering Laboratory of Rail Transit Mechanics Application Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
Funding
National Key R&D Program of China · ostdoctoral Fellowship Program of CPSF
References (54)
Show source-provided references
1. Investigation on aerodynamic characteristics of high-speed trains with shields beneath bogies10.1016/j.jweia.2024.105666 ↗
2. Analysis and control of high-speed train lateral vibration on the basis of a conditionally triggered model predictive control strategy10.1007/s12206-024-0307-6 ↗
3. A review of train aerodynamics Part 1—Fundamentals10.1017/S000192400000909X ↗
4. Aerodynamics of railway train/tunnel system: A review of recent research10.1016/j.enbenv.2020.03.003 ↗
5. Studies of micro-pressure wave radiated from a tunnel exit
6. Generation and alleviation of sonic booms from rail tunnels
7. High-speed trains: Prediction of micro-pressure wave radiation from tunnel portals10.1016/j.jsv.2006.01.067 ↗
8. Prediction of micro-pressure waves generated at the exit of a model train tunnel10.1016/j.jweia.2018.10.015 ↗
9. Passive alleviation of micro-pressure waves from tunnel portals10.1006/jsvi.1998.2006 ↗
10. Propagation of Compression Wave in a Long Tunnel with Slab Tracks10.2219/rtriqr.46.188 ↗
11. Numerical investigation on an array of Helmholtz resonators for the reduction of micro-pressure waves in modern and future high-speed rail tunnel systems10.1016/j.jsv.2017.04.022 ↗
12. Nose Shape Optimization of High-speed Train for Minimization of Tunnel Sonic Boom
13. Effects of an opening on pressure wave propagation in a tube10.1017/S0022112005005367 ↗
14. Influence of the geometry of equal-transect oblique tunnel portal on com-pression wave and micro-pressure wave generated by high-speed trains entering tunnels10.1016/j.jweia.2018.05.003 ↗
15. Attenuation and Distortion of a Compression Wave Propagating in a High-Speed Railwav Tunnel10.1299/jsmeb.40.51 ↗
16. Wavefront evolution of compression waves propagating in high speed railway tunnels10.1016/j.jsv.2018.05.039 ↗
17. Propagation characteristics of compression wave in a high-speed railway tunnel10.1063/5.0054868 ↗
18. A New Simple Equation Governing Distortion of Compression Wave Propagating Through Shinkansen Tunnel with Slab Tracks10.1299/jfst.8.462 ↗
19. Aerodynamic mechanism of a combined buffer hood for mitigating micro-pressure waves at the 400 km/h high-speed railway tunnel portal10.1063/5.0177766 ↗
20. Numerical study of the effect of the tunnel hood on micro-pressure wave for increasing high-speed train operation speed10.1007/s12206-024-0122-0 ↗
21. Aerodynamic Force Acting on a High Speed Train at Tunnel Entrance10.1299/jsme1958.4.547 ↗
22. The compression wave produced by a high-speed train entering a tunnel10.1098/rspa.1998.0220 ↗
23. Influence of an unvented tunnel entrance hood on the compression wave generated by a high-speed train10.1016/S0889-9746(03)00011-2 ↗
24. Theoretical and experimental investigation of the compression wave generated by a train entering a tunnel with a flared portal10.1017/S0022112000002093 ↗
25. Rapid calculation of the compression wave generated by a train entering a tunnel with a vented hood10.1016/j.jsv.2006.03.039 ↗
26. Rapid calculation of the compression wave generated by a train entering a tunnel with a vented hood: Short hoods10.1016/j.jsv.2007.09.012 ↗
27. Experimental 3-d simulation of the compression wave, due to train–tunnel entry10.1006/jfls.2002.0444 ↗
28. Three-dimensional characteristics of pressure waves induced by high-speed trains passing through tunnels10.1007/s10409-023-23261-x ↗
29. Optimization of Train Nose Shape for Reducing Micro-Pressure Wave Radiated from Tunnel Exit10.1260/0263-0923.30.1.1 ↗
30. Optimal cross-sectional area dis-tribution of a high-speed train nose to minimize the tunnel micro-pressure wave10.1007/s00158-010-0550-6 ↗
31. Multistep train nose for reducing micro-pressure waves10.1016/j.jsv.2021.116665 ↗
32. A newly designed entrance hood to reduce the micro pressure wave emitted from the exit of high-speed railway tunnel10.1016/j.tust.2020.103728 ↗
33. Field test for micro-pressure wave reduction measurement by area optimization of windows of tunnel hoods10.1177/09544097221080368 ↗
34. Ma, W., Fang, Y., Li, T., and Shao, M. (2024). Alleviation Effects of Hoods at the Entrances and Exits of High-Speed Railway Tunnels on the Micro-Pressure Wave. Appl. Sci., 14.10.3390/app14020692 ↗
35. Study on the mitigation effect of a new type of connected structure on micro-pressure waves around 400 km/h railway tunnel exit10.1016/j.jweia.2023.105510 ↗
36. Effect of train length on fluctuating aerodynamic pressure wave in tunnels and method for determining the amplitude of pressure wave on trains10.1016/j.tust.2018.07.031 ↗
37. Aerodynamic effects on a railway tunnel with partially changed cross-sectional area10.1007/s11771-022-5113-7 ↗
38. Study of unsteady aerodynamic performance of a high-speed train entering a double-track tunnel under crosswind conditions10.1016/j.jfluidstructs.2023.103836 ↗
39. Design method of the variable cross-section tunnel focused on improving passenger pressure comfort of trains intersecting in the tunnel
40. Numerical investigation of the pressure and friction resistance of a high-speed subway train based on an overset mesh method10.1177/0954409720951290 ↗
41. Numerical study on transient aerodynamic characteristics of high-speed trains during the opening of braking plates based on dynamic-overset-grid technology10.1016/j.jweia.2023.105299 ↗
42. Effect of cross passage on aerodynamic characteristics of super-high-speed evacuated tube transportation10.1016/j.jweia.2021.104562 ↗
43. Numerical investigation of the slipstream charac-teristics of a maglev train in a tunnel10.1177/09544097221100658 ↗
44. Mechanism and capability of ventilation openings for alleviating micro-pressure waves emitted from high-speed railway tunnels
45. Aerodynamic behaviors in supersonic evacuated tube transportation with different train nose lengths10.1016/j.ijheatmasstransfer.2021.122130 ↗
46. Effect of tracks on the flow and heat transfer of supersonic evacuated tube maglev transportation10.1016/j.jfluidstructs.2021.103413 ↗
47. Comparative analysis of the slipstream of different nose lengths on two trains passing each other10.1016/j.jweia.2020.104457 ↗
48. Effects of simplifying train bogies on surrounding flow and aerodynamic forces10.1016/j.jweia.2019.06.006 ↗
49. Flow structures around a high-speed train extracted using Proper Orthogonal Decomposition and Dynamic Mode Decomposition10.1016/j.compfluid.2011.12.012 ↗
50. Two-equation eddy-viscosity turbulence models for engineering applications10.2514/3.12149 ↗
51. Evaluation of LES, IDDES and URANS for prediction of flow around a streamlined high-speed train10.1016/j.jweia.2022.104952 ↗
52. Numerical analysis of aerodynamic characteristics of high-speed train with different train nose lengths10.1016/j.ijheatmasstransfer.2018.08.041 ↗
53. Development of an experimental facility for measuring pressure waves generated by high-speed trains10.1016/j.jweia.2009.09.002 ↗
54. Pressure Waves Radiated Directly from Tunnel Portals at Train Entry or Exit10.2219/rtriqr.42.83 ↗