1Mohamed Abuelkassem Mohamed, 2Elseman I. Abdelrasoul, 3Sayed R. Hamed
1,2,3Department of Mining and Metallurgical Engineering, Engineering College, Assiut University, Egypt,71515
3ORCID: https://orcid.org/0000-0001-9526-9480
DOI : https://doi.org/10.47191/ijmra/v6-i8-56Google Scholar Download Pdf
ABSTRACT:
One of the problems facing the underground tunnels is lacking enough fresh air for passengers inside the subway. Also, because of the friction of the train with the railways, high heat is generated. So, the use of computational fluid dynamics to distribute the required fresh air flow at the lowest possible cost is critical for the tunnels. In this research, Computational Fluid Dynamics (CFD) is used to perform 3D modelling and simulation for the tunnel of Cairo Metro Line No. 3. The standard k-e turbulence model was used in the CFD analysis to simulate the ventilation airflow in a 1075m tunnel length. The simulation reveals that the tunnel airflow rate induced by the speed of the fan is more desirable. Also, the addition of a jet fan causes an eddy current that improving the efficiency of tunnel ventilation, thereby greatly reducing ventilation time, and increasing efficiency in cases where the diameter of the tunnel equals 15 m, the speed of the fan is 1480 r.p.m, and the air flow rate is 80- 120 m3/s. This led to improve fan speed efficiency and airflow distribution in the tunnel. Similar way of simulation is used for road tunnel ventilation.
KEYWORDS:Tunnels, Ventilation systems, Numerical simulation, Computational Fluid Dynamics (CFD)
REFERENCES1) Ding, C., X. He, and Nie, B. 2015. Numerical and experimental research on “key ring” distribution of ventilation in mine tunnels.
Journal of Liaoning Technical University (Natural Science), 34(10): pp. 1131-1136.
2) Ding, C. 2016. Numerical and experimental research on the average velocity distribution in the trapezoid tunnels.
Journal of Safety Science and Technology,12(1): pp. 28-32.
3) Richardson, L.F. 1922. Weather prediction by numerical process.:p.50.
4) Harlow, F.H. NUMERICAL METHODS FOR FLUID DYNAMICS, AN ANNOTATED BIBLIOGRAPHY. 1969, Los Alamos National Lab.(LANL), Los Alamos, NM (United States).pp.1-13.
5) Xu, G., Luxbacher, KD., Ragab, S., and Xu, J. 2017. Computational fluid dynamics applied to mining engineering:
a review. International Journal of Mining, Reclamation and Environment, 31(4): pp. 251-275.
6) Tu, J., Yeoh, G., Liu, C., and Tao, Y. 2023. Computational fluid dynamics: a practical approach.: p.50.
7) Vega, M.G., Diaz, KMA., Ore, JMF., and Tajadura, RB. 2008. Numerical 3D simulation of a longitudinal ventilation system:
memorial tunnel case. Tunnelling and Underground Space Technology, 23(5): pp. 539-551.
8) Passi, A., Nagendra, S.S., and Maiya, M. 2021. Characteristics of indoor air quality in underground metro stations: A critical review.
Building and Environment.198: pp. 107-907.
9) Hofer, P., Eder, J., and Strau, C. 2021. Decision Support within Complex Subterranean Operations. in NATO Science and
Technology Organization—Meeting Proceedings Paper (STO-MP-MSG-184).NATO STO: North Atlantic Treaty Organization.p.184.
10) Caliendo, C., Genovese, G., and Russo, I. 2020. Risk analysis of road tunnels: A computational fluid dynamic model for assessing the effects of natural ventilation. Applied Sciences, 11(1): p. 32.
11) Li, A. and Jones, P. 2000. Developments in strategies used for natural and mechanical ventilation in China. Indoor and Built Environment, 9(2): pp. 65-74.
12) Wang, F., Wang, M., and Wang, Q. 2012. Numerical study of effects of deflected angles of jet fans on the normal ventilation in a curved tunnel. Tunnelling and Underground Space Technology, 31: pp. 80-85.
13) Myrvang, T. and Khawaja, H. 2018. Validation of air ventilation in tunnels, using experiments and computational fluid dynamics. pp.1-16.
14) Betta, V., Cacetta, F., Musto, M., and Rotondo, G. 2010. Fluid dynamic performances of traditional and alternative jet fans in tunnel longitudinal ventilation systems. Tunnelling and Underground Space Technology, 25(4): pp. 415-422.
15) Yang, Z., Yu. Z., Yu, L., and Ma, F. 2014. Research on frequency conversion technology of metro station's ventilation and air-conditioning system. Applied thermal engineering, 69(1-2): pp. 123-129.
16) Zhao, D., Huang, F., Chen, S., Wang, d and Wang, D. 2014. Relationship between point air velocity and average air velocity in circular roadway. Journal of Liaoning Technical University (Natural Science), 33(12): pp. 165-165.
17) Kamal, H., Hussein, M., and Akl, A. 2021. Parametric study of twin tunnel under seismic loads for Cairo Metro Line No. 4. HBRC Journal, 17(1): pp. 137-156.
18) Jacques, E. and Wauters, P. 1999. Improving the ventilation efficiency of jet fans in longitudinally ventilated rectangular ducts.p.13.
19) Wang, F., Wang, M., He, S., Zhang, J., and Deng,Y. 2010. Computational study of effects of jet fans on the ventilation of a highway curved tunnel. Tunnelling and underground space technology, 25(4): pp. 382-390.
20) Adjiski, V., and Despodov, Z. 2019. Determining optimal distance from outlet of auxiliary forcing ventilation system to development of heading in underground mines. Journal of Mining and Environment,10(4): pp. 821-832.
21) Acuña, E.I. and Lowndes, I.S. 2014. A review of primary mine ventilation system optimization. Interfaces,44(2): pp. 163-175.
22) McPherson, M.J. 1993. Subsurface ventilation systems. Subsurface ventilation and environmental engineering: pp. 91-133.
23) Hamed, S., Abdel Rasoul, E., and Abuel-Kassem, M.2023. Design and calculation of tunnel ventilation system for Cairo Metro Line 3 (A case study). JES. Journal of Engineering Sciences, 51(1): pp. 1-14.
24) Lewus, D.C. Simulation of High Tunnel Ventilation Using Computational Fluid Dynamics. 2023, Rutgers The State University of New Jersey, School of Graduate Studies. p.13.
25) Jafari, S., Farhanieh, B., and Afshin, H. 2023. Numerical investigation of critical velocity in curved tunnels: Parametric study and establishment of new model. Tunnelling and Underground Space Technology, 135: pp. 10-21.
26) Deng, E., He, X., Ye., Y., and Zhu, Z. 2020. Transient aerodynamic performance of
high-speed trains when passing through an infrastructure consisting of tunnel–bridge–tunnel under crosswind.
Tunnelling and Underground Space Technology, 102: pp. 103-440.
27) Izadi, T., Aboualia, O., Mehrabian, MA., and Salmanzadeh, M. 2020. Investigation of the effects of different parameters on the generated pressure waves inside the tunnels. SN Applied Sciences, 2: pp. 1-13.
28) Chen, Z.,Liu, T., Zhou, X., and Niu, J. 2017. Impact of ambient wind on aerodynamic performance when two trains intersect inside a tunnel. Journal of Wind Engineering and Industrial Aerodynamics,169: pp. 139-155.
29) Rabani, M. and Faghih, A.K. 2015. Numerical analysis of airflow around a passenger train entering the tunnel. Tunnelling and Underground Space Technology,45: pp. 203-213.
VOLUME 06 ISSUE 08 AUGUST 2023
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