Substantiation of Parameters of the Network Model of the Air Distribution Due the Piston Effect in the Extra-Long Tunnels
Source abstract
Abstract
The article analyzes the aerodynamic processes initiated by the piston effect in extra-long railway tunnels. The authors numerically modelled the movement of a freight train, 1 km long, in tunnels 3 and 6 km long. The analysis used the ANSYS Fluent environment. The modeling determined the air pressure at the front and back faces of the train, the draught loss in the tunnel clearance, as well as the air velocity in the tunnel clearance and in the tunnel. These data are used to develop a quasi-dynamic model of the piston effect for solving problems concerning air distribution with the application of network models. The air flow rates calculated in ANSYS Fluent and using the network models agree quite well. The time of the problem solving for a tunnel 3 km long using the network model is shorter by 5 orders of magnitude, which is of significant importance for both the study and multivariate design of ventilations systems for railway tunnels.
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Research context
OpenAlex topics: Aerodynamics and Fluid Dynamics Research · Transportation Systems and Logistics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk 630091, Russia
Faculty of Architecture and Civil Engineering, Construction and Building Materials, Satbayev University, 22 Satbayev Street, Almaty 050013, Kazakhstan
Funding
Science committee of the Ministry of Education and Science of the Republic of Kazakhstan
References (23)
Show source-provided references
1. (2023, January 23). Russian Railways Company Annual Report. Rail Transportation and Infrastructure. Available online: https://ar2021.rzd.ru/ru/performance-overview/analysis-operating-results/railway-transportation-infrastructure.
2. Maintaining required temperature conditions in the Severomuysky Tunnel in cold season using the tunnel ventilation facilities
3. The analysis of thermal conditions in extra-long railway tunnels during the cold season10.1134/S1062739121010166 ↗
4. Modeling of air flow disturbances during train movement in a double-track subway tunnel
5. Influence of traffic on the temperature field of tunnel in cold region: A case study on the world’s longest highway spiral tunnel10.1016/j.undsp.2022.03.002 ↗
6. Experimental research into air distribution in a terminal subway station10.1016/j.tust.2018.11.049 ↗
7. Król, A., and Król, M. (2023). Advanced Solutions and Practical Applications in Road Traffic Engineering, Springer.
8. Flow algorithms are used to calculate air distribution in ventilation networks
9. Piston effect analysis for the metro ventilation
10. Numerical modeling of the piston effect in longitudinal ventilation systems for subway tunnels10.1016/j.tust.2013.09.008 ↗
11. A new simple equation governing distortion of compression wave propagating through Shinkansen tunnel with slab tracks10.1299/jfst.8.462 ↗
12. A numerical analysis of airflows caused by train-motion and performance evaluation of a subway ventilation system10.1177/1420326X13479623 ↗
13. Investigation of the dynamics of air flows generated by the disturbing action of trains in the metro10.1007/s10913-007-0072-9 ↗
14. BAM Tunnel Project (2023, January 23). Projects. Far Eastern Railway. Available online: https://btpnsk.ru/projects/dvzhd/.
15. Selecting efficient airing circuit for the Kuznetsovsky Tunnel
16. (2014). Project Documentation (2014). Construction of the New Baikal Tunnel in the Delbichinda–Daban Trackside of the East Siberian Railway. Section 3: Technological and Design Solutions for a Linear Object. Artificial Structures, Stroy-Trest. (In Russian).
17. Circulatory air rings and their influence on air distribution in shallow subways10.1007/s10913-010-0054-1 ↗
18. Modeling natural draught effect in ventilation network of shallow subways
19. (2023, January 23). Construction Code SP 131.13330.2020. Construction Climatology. Effective as of 25 June 2021, Moscow, Available online: https://minstroyrf.gov.ru/docs/118243/.
20. (2023, January 23). Russian Railways Company Annual Report. Key Indicators. Available online: https://sr2021.rzd.ru/ru/about-company/key-indicators.
21. (2023, January 23). The Russian Railways Company Denies Khodorkovsky’s Saying on Slow Traffic Activity in Russia. Available online: https://www.gazeta.ru/business/news/2015/06/22/n_7312041.shtml.
22. First results of ventilation network tests in the Severomuysky Railway Tunnel
23. Krasyuk, A.M., and Lugin, I.V. (2019). Subway Ventilation, SO RAN. (In Russian).